Custom Software Development Services
The custom software your business actually needs
Off-the-shelf solutions don’t fit. ERP customisations are clunky. And most agencies build the wrong thing.
We have delivered custom software development services to global enterprises and fast-growing SMEs since 2014, with a 100% project success rate.
0
Projects failed since 2014
10+
10+ yrs
Average system longevity
100%
IP ownership – yours, always
We provide custom software development services to
Most businesses settle for software that "kind of" fits. That's expensive.
SaaS looks affordable until you’re paying for features you don’t use, bending your workflows to fit someone else’s product, and watching licence fees climb every year.
ERP customisation sounds good until you’re 18 months in, over budget and left with a tool no one likes.
And traditional software agencies? Ask their past clients how many of their projects have actually shipped on time, on spec, and delivered real ROI.
The SaaS trap
You adapt your business to the software. Features you need are on the roadmap indefinitely. Supplier lock-in grows. And licence fees increase every year, whether you’re getting real value or not.
The ERP dead end
Customising your ERP for extended functionality is slow, expensive, and produces systems that users don’t adopt. Then you’re dependent on specialist ERP developers for every change.
The agency gamble
Many software agencies build technically impressive systems that miss the real business problem. The #1 cause of digital transformation failure isn’t poor execution, it’s building the wrong thing.
Here's the actual cost of delaying your custom software project
Workflows bent around software that doesn’t fit +
Competitive advantage you’re not building +
Time your team spends on manual workarounds +
The cost of switching in year 3 when SaaS breaks down +
The risk of your SaaS provider pivoting, getting acquired or failing
Custom software development services for every part of your business
From mobile apps to enterprise data platforms, we build systems designed around your operations and goals, not a generic template.
Every solution we deliver comes with full IP ownership, no licence fees, and a team committed to your long-term ROI.
Business systems & web applications
Custom web applications and internal systems that replace off-the-shelf tools, Excel-based processes or manual workflows with something built precisely for how your business actually works.
- Customer portals
- Field-team & operations tools
- Internal workflow enhancement
- AI-enabled platforms
- Internal “Command Centres”
Mobile-first solutions
iOS and Android apps built for real users in real environments. From consumer-facing apps used across 600+ retail stores to B2B field operations tools.
- Native, cross-platform iOS & Android development
- Cloud backend & integrations
- Analytics & reporting
- Security, compliance & hosting
- App store management
Data platforms & analytics
From data warehousing and BI to operational dashboards, we help you turn complex, siloed data into a clean, reliable foundation for impact.
- Integrations, data ingestion & processing
- Data centralisation
- BI & reporting
- AI-enhanced insights
Migration & modernisation
Legacy systems holding you back? We plan and execute migrations that preserve business continuity while delivering modern, scalable replacements.
- Legacy system assessment
- Data migration
- Phased modernisation
- Cloud infrastructure setup
AI & automation
We help businesses adopt AI in ways that create measurable impact without the hype, the confusion, or the disruption most expect from emerging technology.
- Agentic AI & custom LLM integrations
- Intelligent document processing
- AI-driven workflows & automations
- Predictive analytics & computer vision
Managed services & support
We don’t disappear at launch. Our Steer Continuity services can handle hosting, security monitoring, performance optimisation, and ongoing development, so your system keeps improving.
- 7-day/week technical support
- Security & risk monitoring
- Cost & performance management
- Long-term product team augmentation
Who we work with
The common characteristic of our clients isn’t company size, it’s that they’re leaders in their field. We’ve delivered custom software development services for global enterprises and ambitious SMEs alike.
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.
Custom software development without the traditional downsides
100% project success rate
We’ve delivered complex, business-critical systems across 10+ countries, for clients from fast-growing SMEs to global enterprises.
Fixed-price projects available
Because our scoping process is thorough enough to make fixed-price commitments possible. You know what you’re getting and what it costs before a single sprint begins.
Your IP. Your system. Forever.
Complete ownership of all intellectual property from day one. No licensing fees. No vendor lock-in. Full freedom to innovate, adapt, and build on your investment.
A team built for the long term
Industry-leading staff retention means the developers who understand your system are still there in year 3 and year 7. We have clients we’ve worked with for nearly a decade.
AI-enhanced delivery
Our Digital Transformation Platform uses pre-built components, proven frameworks, and AI-enabled workflows to deliver faster and more reliably than traditional development approaches.
Meet us in London or give us a call
London office: Steer73 – Custom software development services, London
167-169 Great Portland St (5th Floor), London, W1W 5PF, United Kingdom
Phone number: +44 2038 550 237
Email: hello@steer73.com
Why we've never failed to deliver a project
The most expensive mistake in software development isn’t a bug in production. It’s building the wrong thing in the first place. It’s often said that a problem at the requirements stage costs £1 to fix. The same problem found during development costs £10. Found after launch? £100.
Our entire methodology is built around getting this right from day one.
PHASE 01 — DISCOVERY
Understand the real problem
We get to the root of the business challenge, not just the feature request. Output: high-level solution at the epic level. This is where most agencies skip ahead. We don’t.
PHASE 02 — SCOPING
Define what gets built
Full system requirements, solution architecture, and a detailed project plan, at the feature level. This is where fixed-price commitments become possible.
PHASE 03 — SOLUTION DEFINITION
Specify exactly how it works
User stories, acceptance criteria, design specifications, and all data and integration requirements. Nothing is left ambiguous before a line of code is written.
PHASE 04 — BUILD & SAT
Build what was defined
Development runs against a clear, agreed spec. Our Steer Acceptance Tests (SAT) phase verifies the system meets what was scoped, removing surprises at launch.
PHASE 05 — UAT & LAUNCH
Validate, train, deploy
Final acceptance testing with your team, training and onboarding, then launch. Not handed over and forgotten, set up for ongoing success.
Phase 01 — Discovery
Understand the real problem
We get to the root of the business challenge, not just the feature request. Output: high-level solution at the epic level. This is where most agencies skip ahead. We don’t.
Phase 02 — Scoping
Define what gets built
Full system requirements, solution architecture, and a detailed project plan, at the feature level. This is where fixed-price commitments become possible.
Phase 03 — Solution definition
Specify exactly how it works
User stories, acceptance criteria, design specifications, and all data and integration requirements. Nothing is left ambiguous before a line of code is written.
Phase 04 — Build & SAT
Build what was defined
Development runs against a clear, agreed spec. Our Steer Acceptance Tests (SAT) phase verifies the system meets what was scoped, removing surprises at launch.
Phase 05 — UAT & launch
Validate, train, deploy
Final acceptance testing with your team, training and onboarding, then launch. Not handed over and forgotten, set up for ongoing success.
We're selective about who we work with. Here's who we're built for.
Not every project is the right fit for Steer73. We work best with organisations that are committed to making real improvements to their business.
We're a great fit if...
We're probably not for you if...
“The attention to detail, clarity, quality and pace which Steer73 deliver customer features is outstanding, which creates a working relationship more akin to a joint venture than a supplier/customer standard.”
“Steer73 have offered us a high-quality service from the beginning of the project, working with us to analyse where our current range of digital products were successful and where they were failing, providing both the tools and the encouragement to grow our business.”
What our clients say about us
Flexible pricing & engagement models
We structure commercial arrangements around how your business works, not the other way around. Whether you need budget certainty for a clearly defined scope, the flexibility to adapt as you learn, or a long-term development partnership, our engagement models support how you want to build and evolve custom software.
Fixed price model
For projects with defined requirements, deliverables and timelines. We agree on scope, milestones and total cost upfront, giving you complete budget certainty for planning and approvals. Development follows a structured Waterfall methodology, ensuring you know exactly what will be delivered and when. Any scope changes are managed through a formal variation process, maintaining control and visibility throughout.
Time & materials
You control direction and resourcing decisions at every stage. We track and bill effort transparently, giving you the flexibility to refine scope, adjust focus or accelerate delivery as commercial or technical requirements evolve. This Agile-based approach includes weekly releases, enabling continuous feedback while maintaining complete transparency on costs and progress.
Managed service model
The most flexible approach for long-term custom software development partnerships. A dedicated team works as your extended product development capability, delivering improvements, maintenance and new features as your business evolves. Teams scale up or down based on priorities, with lower day rates than project engagements and minimal ramp-up for new work.
How much do custom software development services cost?
The cost of custom software development services varies based on your specific requirements and business objectives. Here are some of the key factors that influence the required investment:
Project scope and scale
The size and breadth of your project directly impact development costs. A mobile app for 500 internal users requires a different investment than an enterprise platform serving 50,000+ customers across multiple markets. We break projects into clear phases - Discovery, Scoping, Solution Definition, and Implementation, so you can prioritise features and launch within a fixed budget.
Technical architecture
Your system's technical foundation determines both initial build costs and long-term maintenance expenses. The choice between microservices, serverless, or monolithic architecture depends on your scaling requirements and operational model. We guide you toward solutions that maximise ROI.
Data requirements
Data complexity influences development effort. Projects requiring real-time data processing or complex business intelligence may need more sophisticated architecture than simple applications.
Third-party integration
The number and complexity of external system integrations directly impact project costs. Connecting to payment gateways, CRMs, ERPs, or legacy systems requires careful API design, data mapping, and robust error handling.
Security and governance
Security requirements vary based on your industry, data sensitivity, and regulatory obligations. Systems handling personal data, financial transactions, or operating in regulated industries require additional security layers, compliance documentation, and audit trails.
Operational criticality
Business-critical systems demand higher quality assurance, redundancy, and support infrastructure. A system that processes millions of pounds in daily transactions requires a different investment than an internal tool used occasionally.
1. Initial consultation
A short, no-pressure call with our software development agency to discuss your goals and offer early cost guidance.
2. Free discovery project
A structured deep dive to understand the problem, the business case and develop the high-level solution.
(Output is at the epic level).
3. Clear budget guidance & plan
With a clear understanding of your problems and the software that will solve them, we can provide guidance on costs and a roadmap to a solution.
Our software development articles
Outgrowing Excel, what to do next
Many businesses are quietly powered by sprawling Excel spreadsheets. We explore why, when and how to migrate to something more stable.
You’re renting your software—and paying for the privilege
Whereas off-the-shelf solutions may have been a cost-effective choice ten years ago, today custom solutions are not only cheaper but also deliver far greater ROI. We explore why.
Seven key strategies for data migration
Migrating data in a usable and cost effective way is critical to successful system modernisation and migration. We explore seven general strategies that can be applied to your data migration project.
Where do great products come from?
Discover how successful digital products emerge at the intersection of business needs, user expectations, and technological capabilities. Our proven methodology that has delivered consistent success across complex projects for over 8 years.
Straight answers about custom software development services
Project timelines for custom software development services depend on scope, technical complexity and integration requirements. Whether you’re building a full enterprise system or engaging our custom MVP software development services for rapid validation, our free Discovery process establishes a realistic, tailored delivery schedule based on your specific requirements. This ensures you have clarity and confidence from the outset.
Cost for customised software development services reflects your technical scope, feature set, integration needs and business objectives. Each project has different requirements. Following an initial consultation, we provide indicative guidance based on comparable custom software application development services we’ve delivered. For a detailed estimate, our Discovery and Scoping phase defines the full scope and investment before you commit to development, so there are no surprises.
Yes. Our custom software development services team structures delivery around defined milestones, distributing costs and reducing financial exposure. Payment aligns with completed deliverables as the project progresses, giving you control and transparency at every stage. To discuss the best approach for your custom software application development service needs, contact us at hello@steer73.com.
Our custom software development services are primarily focussed on the Microsoft ecosystem, .NET, Azure, Microsoft 365 and Power Platform, as well as Flutter and React, but we’re not locked into a single stack. We also work across AWS, PHP and modern front-end frameworks. Our focus is always on recommending the technology that best serves your operational and commercial requirements, not what’s easiest for us.
Absolutely. Most organisations operate mixed technology estates, legacy systems, SaaS platforms and on-premise infrastructure. Our customised software development services are designed to integrate seamlessly with what’s already in place. We build secure, high-performance integrations that maintain data integrity across these environments, ensuring your new software works with your existing systems.
Our custom software development services approach begins with an initial consultation to understand your operational challenges and objectives. This usually leads into a free Discovery phase where we define requirements, architecture and delivery approach. Once approved, we move into development, followed by user acceptance testing and go-live. After launch, we remain available for ongoing support, maintenance and enhancement.
We invest heavily in planning and specification upfront to minimise risk before development starts. If issues emerge during our custom software and application development services delivery, our engineers respond quickly to resolve them. Our approach includes formal change control processes, contingency planning and continuous testing throughout delivery to reduce disruption and maintain momentum.
We don’t just write code, we deliver business outcomes. As a London-based provider of custom software development services with deep expertise across enterprise systems, data engineering and AI solutions, we understand how software creates value across the organisation. With a structured delivery methodology, a track record of zero failed projects, and our proprietary Digital Transformation Platform, we deliver solutions that perform, scale and last.
Ready to talk about your custom software project?
Tell us what you’re trying to solve. We’ll tell you honestly whether custom software is the right approach, and if it is, exactly how we’d approach it.
No obligation. No sales pitch. Just an honest conversation about your project.