Unlocking Tech

Custom software development services, shipped to production

As a custom software development company in Lisbon, we put senior engineers on your build — scope and price agreed up front, working code shipped every week. Web and mobile apps, SaaS platforms and enterprise software, and you own everything we write.

The stack we use
AngularCsharpReactJsVue.jsJavaNode.jsFlutterGolangPythonPHP
01 / What we provide

Our software development services

02 / Industries we serve
03/Why Unlocking Tech

Why teams pick us.Senior engineers, code you own.

No junior benches, no lock-in. Scope and price agreed up front, production code every week, and a clean handover at the end.

Production code, not slideware

Working software running in a real environment from the first weeks, with a demo every week. You track progress against shipped code, not status decks.

Scope and price agreed up front

We scope the build with you and fix the price before we write production code. No open-ended hourly billing, no scope you discover on the invoice.

Senior engineers on your build

Principal engineers write the code. No juniors billed to your project, no account manager between you and the people shipping.

You own everything we write

Code, repository and IP are yours from day one. A clean handover with a runbook and docs — no lock-in, nothing to unwind.

Built to fit the systems you run

We integrate with the tools and data you already have and modernise legacy systems in steps, instead of pitching a rebuild-everything project you don't need.

Tested, documented, and handed over

Automated tests, load and edge cases covered, docs your team can run without us — plus an eval harness where AI is part of the build.

Seniorengineers
No juniors on your project. Principal engineers only.
Weekly
Working code shipped, with a demo every week
Fixed
Scope and price agreed before we build
Yours
You own the code, repository and IP — no lock-in
30min
Scoping call to know if we're the right fit
04/How we work

Four steps.Scoped to shipped.

From a thirty-minute scoping call to production software your team owns — milestones you sign off on, no surprises.

01 · SCOPE
Scope and price

Thirty minutes with an engineer, then a written scope: what we build, the milestones, and a fixed price — all agreed before any production code.

02 · BUILD
Build, week by week

Senior engineers ship working software to a real environment on a weekly cadence, with a demo every week. You see running code, not status reports.

03 · SHIP
Ship and harden

Deployed, tested and documented — automated tests, load behaviour and edge cases covered, plus an eval harness where AI is part of the build.

04 · OWN
Hand over and own

Code, repository and runbook are yours. Month-to-month support if you want it — no lock-in.

05/Who it's for

We're not for everyone.We're for the teams who need it shipped.

If any of these sound familiar, we should talk.

01

Founder without a technical team

An idea or a spec, and no one to build it

You're dealing with
  • No in-house engineers to ship it
  • Agencies quoting open-ended hourly work
  • Need it built right the first time
You need
You need senior engineers to scope it, build it, and hand it over clean.

Outcome: A product built and shipped, and code you own.

02

Product or engineering lead

A roadmap bigger than the team

You're dealing with
  • More backlog than capacity
  • A quality bar you can't drop
  • Don't want to hire permanently for one push
You need
You want a senior team to build a scoped piece to your standard and hand it back clean.

Outcome: The build shipped to your standard, handed back clean.

03

Company on a legacy system

Software that's slowing the business down

You're dealing with
  • A codebase nobody wants to touch
  • Manual work around the gaps
  • Fear of a big-bang rewrite
You need
You want it modernised incrementally, without stopping the business.

Outcome: A modern system shipped in steps, not a risky rewrite.

We take on a few builds at a time.
If that's you, let's scope it.

Senior engineers. Fixed scope. You own the code.

06 / Ways to work together
07 / Custom software development company

A custom software development company that ships

Unlocking Tech is a custom software development company in Lisbon, Portugal, with a senior-only core of 12 engineers at principal and staff level. We scope the build with you, fix the price before production code, demo working software every week and hand over code you own. Our target for a first version is live in 9 weeks — the median across our projects from diagnostic to first ship.

What is a custom software development company?

A custom software development company designs, builds and maintains software made for one client's problem — web apps, mobile apps, internal tools, SaaS platforms and integrations — instead of selling a product off the shelf. The good ones own the engineering end to end: discovery, architecture, UI/UX, development, QA, deployment and support, and leave you with code you own.

What are custom software development services?

Custom software development services build software designed for one company's problem — web apps, mobile apps, and enterprise systems — instead of configuring an off-the-shelf tool to almost fit. At Unlocking Tech, senior engineers scope the build with you, ship working code every week, and hand over software you own. Scope and price are agreed up front, so 'custom' never means open-ended.

What do custom software engineering services include?

Our custom software engineering services cover the full build: architecture, development, testing, deployment and support. That includes web and mobile applications, SaaS products, custom programming against the systems you already run, software customization and integrations, and modernising legacy software in steps. Everything is written to production standards by senior engineers, with automated tests and documentation, and you own the code at the end.

08 / What we build

Web applications and SaaS platforms

Customer-facing web apps, portals and multi-tenant SaaS — accounts, roles, billing and audit trails included. Two examples: a hospital management SaaS with isolated deployments per hospital, and a medical device QMS covering 8 compliance modules.

Mobile app development

iOS and Android apps, usually from one React Native or Flutter codebase, native where the product needs it. A precision-agriculture platform combines field sensors, an edge layer and an agronomist dashboard, built on Flutter, React and Node.js — and cut fertilizer cost 23% in its first season.

Internal tools, integrations and AI features

Back-office tools that replace spreadsheets, integrations with the CRM, ERP and APIs you already run, and AI features — assistants, agents, document processing — shipped with evals and cost ceilings. The AI side has its own page: custom AI development.

Legacy modernization

We assess the existing codebase, stabilise what's fragile and modernise legacy software in steps, shipping value along the way instead of stopping the business for a big-bang rewrite. Where a full rebuild genuinely is the cheaper path, we say so and scope it honestly. How we run it, step by step: software modernization services.

UI/UX design and quality assurance

Designers and QA engineers work inside the build, not after it: flows designed with the engineers, automated tests and regression checks every sprint, and load and edge cases covered before launch — not discovered by your users after it.

Product engineering and MVPs

Product engineering means owning product decisions as well as code: what to build first, what to cut, what to measure. New products start with MVP development — a first version live in 9 weeks — and iterate to v1 on real user feedback. The full path, from strategy to evolution after v1: digital product development.

09 / Cost and timeline

How much does custom software development cost?

It's team × time × rate, and scope is the biggest lever: user roles, platforms, integrations, regulated data and AI features move it most. Rates set the baseline — as market ranges, not a quote, nearshore teams typically bill around $40–75 an hour, offshore $20–50 and onshore UK or US agencies $100–150+. Sources: our nearshore vs offshore comparison, and Accelerance's late-2025 survey of 60 development firms, which puts senior developers at $64–76/h in Europe, $60–75/h in Latin America and $31–41/h in Asia (Accelerance, Nov 2025). We scope first and fix the price before production code — most of our projects land between €15k and €50k. Method: how to estimate software development cost.

How long does custom software take?

Our target is a first version live in 9 weeks — the median across our projects from diagnostic to first ship. Larger products are split into milestones you sign off on, each one shipping working software to a real environment rather than a status report.

10 / Stack and security

Technology stack

TypeScript, React, Next.js and Angular on the front end; Node.js, Python and .NET on the back end; React Native and Flutter for mobile; PostgreSQL and MySQL for data; AWS and Azure for infrastructure; OpenAI, Claude and Gemini where AI is part of the build. We choose the stack your team can run after handover, not the one we'd find most interesting.

Security, IP and GDPR

Code, repositories and IP are yours from day one. We're EU-based, so GDPR applies to how your data is handled by default, and regulated requirements — health data, or 21 CFR Part 11 e-signatures in the medical device QMS — are built in from the first sprint rather than bolted on before launch.

11 / Engagement models

Three engagement models

Hand us the outcome as a scoped MVP or product build, get a dedicated development team on your roadmap, or add senior engineers to your own team through IT staff augmentation. All three run from Lisbon on UK time — see nearshore software development in Portugal.

Custom software vs off-the-shelf: when to build

Buy when the process is standard and a SaaS tool covers most of it — accounting, HR, a CRM. Build when the software is how you compete, when off-the-shelf tools force workarounds that cost more than the licence, or when you need to own the data and the roadmap. Many good systems are both: off-the-shelf at the core, custom integrations and tools around it.

12 / Selected work
13 / Related reading
14 / Frequently asked questions
15/Start the conversation

Start your deployment.

Talk directly to a principal engineer.

No sales team.

No discovery workshops.

No procurement circus.

We scope, build and ship.

  • Reply within one business day
  • Engineer-led assessment
  • Written proposal
  • Lisbon · UK time zone

No commitment. Just an engineer.

Budget (estimated)
Timeline

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