Software development agency in London
Steer73 is a world-class software development agency based in London, UK.
We help SMEs, mid-sized companies and enterprise organisations build custom software faster, with less risk and with a higher ROI than traditional software development agencies.
We're a software development agency for
Why choose Steer73, a leading software development agency in London?
As a trusted, London-based software development agency, we work with clients across the globe to design, build and support custom software that improves performance without the complexity, cost overruns or project failures that plague many traditional development firms.
We combine world-class technical capabilities with commercial understanding, helping businesses create systems that scale, adapt and deliver measurable ROI.
We guide clients through every phase of a project, ensuring we achieve the perfect balance between speed, capability and cost.
Our track record speaks for itself: a 100% project success rate and long-standing client partnerships spanning many years.
Our software development services
From strategy and Discovery through to development, launch and long-term optimisation, we’re a software development agency that can deliver comprehensive support across every stage of your project.
Need help with a software development project?
Software development Discovery (free service)
A free project designed to take you from initial challenges to a clear plan, mapping out exactly how to build a software solution in the fastest, most effective, and cost-efficient way.
We’re dedicated to building software that makes a meaningful impact on our clients’ businesses. Our free Discovery engagement helps you understand where the real value lies: which features to prioritise, which technical approaches will deliver the best ROI, and how to structure your project to reduce risk and maximise impact.
The result is a clear, low-risk development roadmap that shows you exactly how to solve your business challenge with custom software, before you commit to spending a penny.
Greenfield software development
A complete software development service that takes you from concept through to a live, high-ROI system.
From initial requirements definition and system architecture through to development, testing, deployment, and ongoing support, our software development agency handles every stage. Our proven software development methodology ensures you build the right thing, with structured milestones, transparent workflows, and rigorous quality assurance at every stage.
We deliver custom solutions for complex business challenges, building web applications, mobile apps, and integrated systems with a guaranteed process.
The result is a high-performance, scalable software solution that’s perfectly tailored to your business.
Legacy system modernisation & replacement
For many organisations, outdated software is holding them back. Our modernisation service helps you replace or upgrade legacy systems without disrupting operations, transforming old technology into modern, high-performing solutions.
We design and implement migration strategies that preserve critical business logic while introducing new capabilities, improved user experiences, and modern architecture. From re-platforming monolithic applications to rebuilding systems with cloud-native architecture, we ensure a smooth transition with robust strategies around data migration, parallel running, and/or staged rollouts.
Whether you’re replacing a system that’s no longer supported or modernising to meet current business demands, we manage the entire process and ensure a solution that perfectly fits your requirements.
The result is a future-proof software solution that eliminates technical debt, improves reliability, reduces maintenance costs, and unlocks new business capabilities.
AI software development
Most organisations know AI can transform their operations, but struggle to turn abstract ideas into practical, high-value solutions. Our AI software development services help you identify where AI can create real impact, then design and build systems that enhance decision-making, automate complex processes, and supercharge operational performance.
We deliver custom AI platforms that integrate with your existing systems, from AI-enabled workforce planning and intelligent automations to predictive analytics and field-team enhancement tools.
Our team handles the entire lifecycle: from opportunity identification to ongoing optimisation and management.
As a software development agency with deep expertise in the Microsoft ecosystem, we build secure, enterprise-grade AI solutions using technologies such as Azure AI, Copilot Studio, Power Platform, and custom model integrations. Every system is designed for scale, governance, and easy adoption across your organisation.
The result is a practical AI foundation that delivers measurable ROI: smarter operations, faster workflows, and a step-change in capability across every part of your business.
System integrations & API development
Disconnected systems create inefficiency, errors, and missed opportunities. Our integration services connect your software ecosystem, automating workflows and enabling reliable data exchange across platforms.
We build custom APIs, middleware solutions, and integration layers that link tools such as ERPs, CRMs, eCommerce platforms, payment gateways, and bespoke systems. Whether you’re connecting legacy software to modern applications or building a unified digital ecosystem, we ensure secure, reliable communication between all your tools.
From webhook implementations to complex enterprise service bus architectures, our software development team handles integrations of any scale, eliminating manual data entry and ensuring your systems work together as one.
The result is a connected, automated technology environment that reduces operational overhead, improves data accuracy, and enables your business to move faster.
Our work
With a proven track record of delivering successful software solutions for enterprise clients, medium-sized businesses, and SMEs, we’ve established ourselves as a leading software development agency in London.
Explore some of our recent software development projects below.
Streamlining complex manufacturing processes for Bridon Bekaert
Bridon Bekaert needed a unified, digital system to manage their complex rope design and production process. Steer73 built an enterprise-grade web platform to centralise design, production, QA, and analytics, standardising workflows, improving accuracy, and accelerating delivery.
Reducing shipment scanning time by over 80% for DHL
DHL needed to modernise their manual shipment scanning process to boost speed and accuracy. Steer73 built a custom software system integrating hardware, cloud, and analytics tools.
The result: scanning times cut by over 80%, fewer errors, reduced staff costs, and powerful real-time dashboards improving efficiency and decision-making across operations.
Reducing cost of sales with an entirely new online sales model
Chubb needed to reduce their high cost of sale of fire safety services by moving from using a traditional field sales force to an online sales model. This involved not just the creation of an online platform but also significant operational changes to move the business to a digital model.
Why choose Steer73 as your software development agency?
Guaranteed success
Steer73 has never failed to deliver a project. Our software development agency serves clients across the UK and internationally, building custom systems that drive real business performance. We combine proven delivery frameworks, our proprietary Digital Transformation Platform, and world-class technical capability to guarantee the outcome of any project we work on.
Proven processes
For over a decade, our software development agency has refined the methodologies, frameworks and technical platforms that underpin every project we deliver. We work with enterprises and mid-market organisations to understand their operational challenges, translate business requirements into technical solutions, and build systems that solve real problems. Our structured approach reduces risk, eliminates cost overruns, and ensures you get software that delivers against your objectives.
Maximising ROI
Custom software is a strategic investment, and maximising your return requires more than technical execution. As a full-service software development agency, we start with your business objectives, then design and build systems that create measurable impact. This business-first approach means you get solutions that deliver the commercial outcomes that justify your investment.
London-based, global team
Our software development agency is headquartered in London, with a team spanning 8 countries. This gives you the benefits of working with a local UK partner backed by internationally experienced software architects, engineers and AI specialists. You get direct access to senior technical talent who bring diverse perspectives, deep domain expertise, and a track record of delivering complex software projects across industries.
Faster, higher ROI solutions
Our Digital Transformation Platform combines the speed and reliability of productised software with the flexibility of custom development. This hybrid approach enables us to deliver results faster and for less cost than traditional bespoke development, while still giving you full ownership and systems built specifically for your business.
Meet us in London or give us a call
London office: Steer73 – Software development agency, London
167-169 Great Portland St (5th Floor), London, W1W 5PF, United Kingdom
Phone number: +44 2038 550 237
Email: hello@steer73.com
The software development agency services we offer
Whether you’re building an internal tool or a mission-critical enterprise platform, we provide full end-to-end support, from Discovery through to long-term management.
Web application development
We design and build custom web applications that power core business operations, from internal management systems and operational tools to customer-facing platforms.
As a leading software development agency, we build for performance, longevity, and ROI, combining robust backend architecture with intuitive user experiences.
The result is a reliable, high-impact web platform tailored precisely to how your business works today, and how it needs to scale tomorrow.
Internal operational tools
We build custom internal tools that streamline how your business runs day to day, replacing spreadsheets, manual work, and fragmented systems with purpose-built software.
These tools are designed around your real workflows, delivering ROI via areas such as improved efficiency, unlocked team capabilities, better visibility, and risk reduction.
Mobile app development
From simple front-end apps that give users an intuitive way to engage with your services, to mobile-first systems backed by sophisticated backend architecture and deep system integrations, we deliver high-quality mobile solutions for iOS, Android, and web.
Data platforms & analytics
We design and deliver robust data foundations that support real operational and strategic decision-making. This includes modern data warehousing, system integration, centralised reporting, and business intelligence solutions.
Data projects increasingly focus on AI-readiness, creating data pipelines, governance frameworks, and storage architectures that make your data accurate, accessible, and ready for AI systems to use.
Automation & AI
We help organisations automate complex workflows and deploy practical, high-ROI AI solutions that integrate with their existing systems. From process automation and intelligent assistants to document intelligence and custom AI-powered tools, we focus on real business impact, not hype. Our approach blends modern AI capabilities with robust engineering, governance, and security, ensuring every solution is scalable, reliable, and delivers real-world value.
System modernisation & rebuilds
We specialise in taking ageing, unreliable, or poorly documented systems and turning them into modern, stable, high-performing platforms. Whether you need a full rebuild or targeted improvements, we bring structure, clarity, and a proven delivery process that reduces risk and keeps your operations running smoothly. From architecture and code remediation to UX upgrades, integration work, and long-term support, we ensure your system is future-ready and built to last.
Our unique approach to software development
Every software project has unique requirements. Our proprietary software development agency platform ensures those requirements are clearly understood and that systems are built specifically around your needs.
With a full in-house team of software architects, engineers, product specialists, AI experts, and project managers, we’re a software development agency that can deliver end-to-end services with guaranteed outcomes.
Strategy-led discovery and technical design
Successful software development starts with understanding the problem you’re solving. Our software development agency UK begins every project with structured discovery to map your operational challenges, technical constraints, and business objectives. Using our proven delivery methodology and Digital Transformation Platform, we create a development plan that reduces risk, optimises performance, and aligns with your strategic priorities.
Our cross-functional expertise in software engineering, data infrastructure, and AI gives us the ability to design holistic solutions, ensuring your system not only solves today’s challenges but creates a foundation for future growth and innovation.
Successful cloud migration starts with clarity. We begin every project with a detailed discovery phase to understand your systems, dependencies, and business objectives. Using our proven methodology and Digital Transformation Platform, we create a migration plan that eliminates risk, optimises performance, and aligns with your strategic goals.
Our cross-functional expertise in software development, data engineering, and AI gives us a unique ability to see the full picture, ensuring your cloud architecture not only works today but sets the foundation for long-term innovation.
Choosing the right development approach
Every organisation’s technical requirements, budget, and timeline are different, which is why selecting the right development approach is critical to success. Our software development agency helps you evaluate your operational, technical, and commercial priorities to identify the most effective path forward.
We work across proven methodologies – from agile iterative development and phased delivery to MVP approaches and platform-based implementation. Each has distinct advantages in terms of speed, cost, and risk. Our role is to guide you to the approach that delivers working software with minimal disruption and maximum ROI.
Fast, transparent delivery with full visibility
Our Digital Transformation Platform enables our software development agency to design, build, and deploy solutions faster and more cost effectively than traditional consultancies, without sacrificing quality or flexibility.
Every stage of development is transparent. You’ll have complete visibility into progress, technical decisions, and delivery milestones through our structured project tools, regular updates, and collaborative working sessions – whether virtually, at our London office, or on-site with your team. We’ve never failed to deliver a project, and we guarantee solutions that work from day one.
Beyond software development: A partner for long-term growth
For many organisations, cloud migration is only the first step in a wider digital transformation
For many organisations, custom software is the beginning of broader digital transformation. Once your system is live and delivering value, our software development agency can continue as your technical partner to help you optimise and scale
Whether it’s adding new functionality, integrating AI capabilities, or building analytics that improve decision-making, our team has the expertise to extend your digital infrastructure as your business grows.
With specialists across software development, data engineering, and AI, we are your trusted digital partner.
on. Once your systems are securely running in the cloud, we can act as an ongoing partner to help you modernise, optimise, and evolve.
Whether it’s modernising legacy systems, adding new AI capabilities, or building out analytics that drive smarter decision-making, our team has the expertise to take your cloud foundation further.
With specialists across software development, data engineering, and AI, we are a your true digital partner.
Strategy-led discovery and technical design
Successful software development starts with understanding the problem you’re solving. We begin every project with a structured Discovery phase to map your challenges, technical constraints, and business objectives. Using our proven delivery methodology and Digital Transformation Platform, we create a plan that reduces risk, optimises performance, and aligns with your strategic priorities.
Our cross-functional expertise in software engineering, data infrastructure, and AI gives us the ability to design holistic solutions, ensuring your system not only solves today’s challenges but creates a foundation for any future requirements.
Choosing the right development approach
Every organisation’s requirements are a little different, which is why we offer flexible approaches to software development. We’re a software development agency that can help you evaluate all your operational, technical, and commercial priorities to identify the most effective path forward.
We work across proven methodologies, from agile development to waterfall, from MVP development to long-term product improvement. Our role is to guide you to the approach that delivers working software in minimal time, with maximum ROI.
Fast, transparent delivery
Our Digital Transformation Platform enables our software development agency to design, build, and deploy solutions faster and cost-effectively than traditional consultancies, without sacrificing quality or flexibility.
Every stage of development is transparent. You’ll have complete visibility into progress, technical decisions, and delivery milestones through our structured project tools, regular updates, and collaborative working sessions, whether virtually, at our London office, or on-site with your team. We’ve never failed to deliver a project, and we guarantee solutions that work from day one.
Beyond launch: A partner for long-term growth
For many organisations, an initial launch of a system is just the beginning of a broader Digital Transformation programme. As a full-service software development agency, we have a full suite of support services once a system is live.
Whether it’s adding new functionality, integrating AI capabilities, or building analytics that improve decision-making, our team has the expertise to extend your digital infrastructure as your business grows.
With specialists across software development, data engineering, and AI, we are your trusted digital partner.
Flexible pricing & engagement models
Different projects require different commercial frameworks. As a leading software development agency, we work with organisations across varied procurement models, governance requirements and budget parameters.
Whether you need fixed deliverables with defined costs or a flexible partnership that evolves with your priorities, we structure engagements to match how your business operates.
Fixed price model
Suited for projects where requirements, budget and timeline are established from the outset. We define deliverables, milestones and total cost upfront, providing certainty for planning and approvals. Any subsequent scope changes follow a formal variation process to maintain control and visibility.
Time & materials
Best suited to projects with evolving requirements. You retain the flexibility to adjust scope and priorities as the project progresses. Work is billed according to the time and effort invested, allowing for adaptive delivery while maintaining full transparency.
Managed service model
Our most flexible and cost-effective model for long-term enterprise engagements. A dedicated team works as your extended product development arm, delivering ongoing improvements, maintenance, and new features.
Here’s a closer look at how our software development agency delivers projects
As a London-based software development agency, we follow a structured methodology that reduces risk, controls costs and ensures every solution is built to perform. From initial scoping through to deployment and support, each phase is designed to maintain clarity, quality and alignment with your business objectives.
1. Discovery
Following an initial conversation to understand your challenges, commercial priorities, and technical landscape, we typically begin with a free Discovery project.
During Discovery, we map your requirements, evaluate technical and product approaches, define a high-level solution to your challenges, create an initial roadmap, and estimate the required investment.
The output is delivered at the epic level.
2. Scoping
During scoping, we establish more precisely what needs to be built, what parameters define success and which unknowns require resolution before development begins.
The output is a feature-level specification that provides a clear foundation for the next phase.
3. Solution definition
With scope confirmed, we design the detailed blueprint that defines how each requirement will be delivered. This phase maps out system architecture, data structures, integration points and functional behaviour at the task and user story level, creating a specification that guides implementation.
4. Implementation
Our engineers execute against the agreed specification. At this stage, requirements are agreed and delivery is underway. We build, test and validate each component using proven development practices, maintaining quality standards and reporting progress transparently throughout.
5. UAT & launch
We oversee the full deployment cycle, from user acceptance testing through to production release. Our team manages every aspect of the transition to minimise disruption, validating functionality, performance and data accuracy before final handover.
6. Maintenance & support
Once live, we can provide ongoing maintenance, monitoring and enhancement as your software development needs evolve. Whether that's routine maintenance, optimising performance or extending functionality, we remain available to support your system over its lifetime.
Technologies we use for software development
Your return on investment is at the heart of our software development services, and we are technology agnostic. This means we only use the technologies that will help you build the highest-performing, most scalable, and secure solution possible for your budget. Whether you need a mobile app, web application, data platform, or AI-powered system, we select the right tools for your project’s needs.
Below are some of the technologies that may be available to you.
Mobile development
Native app development:
- iOS development – Swift and Objective-C for Apple platforms
- Android development – Kotlin and Java for Google platforms
Cross-platform development:
For projects requiring a single codebase across iOS and Android without compromising quality, we use:
- Flutter – Google’s UI toolkit for beautiful, natively compiled applications
- React Native – JavaScript framework for cross-platform mobile apps
- .NET MAUI – Microsoft’s evolution of Xamarin for cross-platform development
Web & backend development
Backend frameworks:
- .NET – Our primary framework for building robust, enterprise-grade backend systems and web applications
- ABP.io – Our preferred .NET solution framework, delivering faster development, better quality, and reduced costs
Cloud infrastructure:
- Microsoft Azure – Our primary cloud platform for hosting, data storage, compute, and AI/ML services
- Cloud-native architecture for scalability, security, and performance
Data & analytics
Data platforms:
- Data ingestion & integration tools – Azure Data Factory, custom ETL pipelines
- Data warehousing – Azure SQL Database, Azure Synapse Analytics
- Business Intelligence (BI) – Power BI, custom dashboards and reporting
- Data processing & management – Real-time and batch processing solutions
Security, compliance & hosting
- Enterprise-level security – End-to-end encryption, secure authentication
- Compliance frameworks – GDPR, industry-specific regulations
- Cloud hosting – Azure-hosted solutions with high availability
- Ongoing management – System monitoring, maintenance, and optimization
AI & automation
AI/ML capabilities:
- Azure AI/ML services – Machine learning model development and deployment
- Agentic AI – Autonomous AI systems that can act on behalf of users
- Custom LLM integrations – Large language model integration for intelligent applications
- AI copilots – Decision support systems powered by AI
- Predictive analytics – Forecasting and pattern recognition
- Computer vision – Image and video analysis
- Intelligent document processing – Automated data extraction from documents
- AI-driven workflows – Process automation enhanced by artificial intelligence
- RPA tooling – Robotic process automation for repetitive tasks
Integrations & third-party services
We seamlessly integrate with existing systems and third-party platforms:
Payment systems:
- Stripe, PayPal, Apple Pay, Google Pay
- Point-of-Sale (PoS) integrations
Enterprise systems:
- ERP systems – Salesforce, Oracle, Microsoft Dynamics
- CRM platforms – Custom and third-party CRM integrations
- Warehouse Management Systems – Bespoke and commercial WMS integrations
Authentication & security:
- OAuth, Firebase Authentication, Okta
- Enterprise-grade security and compliance frameworks
Mapping & location services:
- Geolocation APIs and mapping platforms
How much does a software development agency cost?
A common question is “What should we budget for a software development agency?” The answer varies based on the specific requirements. However, some of the primary factors that impact budgets are:
Project scope and scale
The number of features, user types and system components required determines the overall development effort and timeline.
Technical architecture
For example, building standalone applications requires less effort than solutions that integrate deeply with existing enterprise systems or multiple data sources.
Data requirements
Projects involving large datasets, complex business logic or real-time processing demand additional development and validation work.
Third-party integration
Software that connects to external platforms, APIs or legacy infrastructure adds technical scope and testing overhead.
Security and governance
Solutions handling sensitive data or operating in regulated industries require enhanced security controls, compliance validation and documentation.
Operational criticality
Business-critical systems demand higher quality assurance standards, redundancy planning and more rigorous pre-deployment testing to eliminate risk.
1. Initial consultation
A short, no-pressure call with our software development team to discuss your goals and offer early cost guidance.
2. Free discovery project
A structured deep dive to define your infrastructure, timeline, and technical needs.
3. Clear cost plan
With a mapped-out feature set and delivery plan, we help you align your budget with the right framework and approach.
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FAQs - Software development agency, London
Timelines depend on the complexity and scope of the project, but we are very rarely the limiting factor when it comes to speed. In most cases, project timelines are extended by factors such as client team availability, approvals, or other external dependencies.
When speed is critical, we can move quickly, as demonstrated in this case study. We went from initial conversations to launching an entirely new product to tens of thousands of customers across 600+ retail stores in just three months.
Costs vary depending on scope, complexity, and delivery model. Steer73 offers multiple engagement models including fixed-price, time-and-materials, and dedicated managed services, allowing us to adapt to your governance and budget requirements. Projects start as low as £20,000 and many clients find that a custom system pays for itself within one to two years, often costing less than annual licence fees for comparable off the shelf tools.
To get more accurate budget guidance you can contact us at any time.
We have a proven delivery methodology that has ensured a 100% project success rate over the last decade and we guarantee each project we work on.
Absolutely. Many organisations we support operate mixed technology estates combining legacy systems, SaaS platforms and on-premise infrastructure. We design and build integrations that maintain security, data integrity and performance across these environments.
Our methodology begins with an initial consultation to understand your operational challenges and objectives.
This leads into a Discovery phase where we define the solution at the ‘epic’ level. Once approved, we move into full Scoping, Solution Definition, development, followed by user acceptance testing and go-live.
After launch, we remain available for maintenance, support and ongoing enhancement.
As a full service software development agency, we have a suite of services to support, maintain and optimise your systems once they’re live.
We will work with you to help you understand the level of support you need.
We’re an established software development agency with a fully in-house team covering every skill set required to bring software projects to life. This includes product strategy, engineering, UX and design, quality assurance, and project delivery.
We don’t outsource our work, every project is delivered by our directly employed, world-class team.
We work with organisations of all sizes, from SME’s to medium-sized organisations to the world’s largest enterprises.
We have established ways of working and project structures to support all types of organisation.
Have a project you want to discuss?
No matter what stage your project is in, we would love to speak.
We offer a free discovery service to help you develop a deeper understanding of your problem, the potential solutions and the costs involved in building these solutions.