AI-native software development agency
From first idea to production, shipped in weeks, built to scale.
Relied on by
Built end to end
The full range of modern software, developed with obsession down to the last detail.
Selected work
A few engagements we’re proud of. Shipped, scaled, and still in production.
Hyperice
Backend rewrite for the HyperSmart app, four weeks before launch
Four weeks before HyperSmart launched, we took over a backend that was slow, crash-prone and not built to scale. We rewrote it, moved the earlier app’s users across without downtime or sign-outs, and launched on the original date at 25,000+ concurrent users. We then built five health integrations and AI longevity scoring.
4 weeksFrom backend takeover to launch
Blissbook
AI features and core product development for HR policies
Blissbook is an HR policy platform serving 500,000+ people. From a 2025 notification workshop, we joined its product team, building core features and its AI: an assistant that respects access rules down to each policy section, and AI Check, which reviews policies against each customer’s own guidelines.
2,000+Organisations with the AI features enabled
Mikrocop
Scripting Sandbox and core development for the InDoc EDGE document platform
Four of our engineers worked on Mikrocop’s InDoc EDGE from June 2024 to September 2026. We built its Scripting Sandbox end to end, delivered three modules and then joined the core team. The sandbox runs 1,500 scripts per second, a full rewrite made signing 65% faster, and the releases we worked on shipped 30% more feature tickets.
1,500Scripts per second on two sandbox instances
The voices of our clients
Laurence CreamerCo-founder, PunkPadelOur booking platform is central to how we run PunkPadel, from taking payments to operating our venues. Extra.dev understood how it supports the business and strengthened it for growth. We now have a reliable system for day-to-day operations and the flexibility to expand as the business develops.
Luka GuboCEO, JonatanMarsIn investment services, accurate and reliable software is part of the trust clients place in us. Extra.dev understood our operations and regulatory requirements, built our new application and its supporting systems, and migrated existing client accounts from the previous platform. They have continued working with us as requirements change, bringing technical expertise grounded in an understanding of our business.
Matjaz SobocanCEO, ApillonExtra.dev joined our team at Apillon and quickly proved to be an outstanding addition. No onboarding needed, they understood what had to be done and just got on with it, delivering top results from the start. They also brought in new product ideas and valuable improvements without being asked, always thinking ahead.
Primož RupDirector of Information Technology, MikrocopI’m really happy with our collaboration. We’ve worked with many companies before, and Extra.dev stand out. They have a more ‘international’ approach: fast, responsive, efficient, on par with what you see in the US. Moreover, they don’t make excuses. They take ownership. They solve problems proactively, and when something goes wrong, they react and fix it. That’s a big green flag. And it’s what brings results.
Charlotte GrayFounder & Lead Vet, VetsyExtra.dev helped us translate our clinical knowledge into practical software for our veterinary practice and its clients. They worked closely with us to define the requirements and took responsibility for developing the platform through to launch. Technical decisions were explained clearly, and the work stayed aligned with our priorities.
Nick WilsonFounder & CEO, Green Line ArbGreen Line Arb was already supporting arborists in their daily work when Extra.dev took over development. They improved the existing platform’s stability and performance before adding new functionality. We continue to develop it together, with improvements shaped by how arborists use the app in the field.
Alec BeckettCIO, Avenir GlobalI truly enjoy working with Extra.dev, from ideation to building to project delivery, and just day-to-day contact. Their team is responsive, works hard, and always meets our deadlines. We have a really good working relationship. More than that, I see us as partners. And I hope that in five years, they’ll be fully integrated into our business, helping us across multiple areas and assisting with new product development.
Petra OfentavsekCEO, BOmindExtra.dev has been our development partner from the earliest stages of BOmind, helping define the product and delivering the mobile app and therapist platform. They understood the needs of users and therapists and treated sensitive information with care. That knowledge has carried through our work since launch as we continue to adapt the platform based on its use.
Romano PravdicFounder & CEO, Cloud9devsWe trust Extra.dev to deliver technically demanding client projects on behalf of our company. They take responsibility for the work and keep us informed, raising issues early when decisions are needed. Their technical judgment and attention to quality give us confidence in what we deliver to our clients.
Why teams bring us in
The people, the speed, and the standards behind every project.
Specialists who operate like founders
Each has delivered complex products and owned the outcome from first decision to launch, thinks a step ahead, moves without hand-holding, and treats your roadmap like it’s theirs.
Measurably faster than you’re used to
We use AI where it helps across research, design, development and delivery. On projects where we’ve measured it, that’s 25–30% less delivery time.
25–30%less delivery time
In control of every detail
Getting the work done quickly is only part of the job. Our standards keep the result sound: clear decisions, usable design, secure and reliable software, and work others can build on years down the line.
- Clear decisions
- Usable design
- Secure, reliable software
- Work others can build on
Work with us, your way
From a workshop before you commit to a build we own outright: engage us at whatever depth you need.
Questions, answered
You’ll work with engineers who’ve built and scaled production systems in the real world, and who act like owners, accountable for the result, not just the task in front of them. They combine deep technical range with genuine commercial sense, building toward what your business actually needs. They keep communication clear, raise risks early, and operate with minimal oversight.
Yes. The team assigned to your project remains dedicated to it throughout, we don’t reassign people to other clients. In the rare event a team member must transition off, their successor is brought on in advance and works alongside them until fully up to speed, ensuring a clean knowledge transfer and uninterrupted delivery. The ramp-up is absorbed by us, at no cost to you.
That’s common, it’s exactly what our workshops are for. We figure it out together: the real problem, the constraints, and what’s actually worth building. From there we turn it into a plan, timeline, cost, and approach, that you sign off on before any work starts. If you already know what you need, we skip ahead to that plan.
Scope, cost, and terms are agreed in writing before any work begins, nothing hidden. Throughout, you have full oversight: regular reporting on progress and spend, so the budget is never in question.
We’ve delivered for regulated finance, medical software, and enterprises with their own strict security standards, so building under real requirements is familiar ground. As an EU-based team, GDPR is a given. When a project answers to a specific framework, we work to it, whether that’s SOC 2, ISO 27001, HIPAA, or an internal standard of your own.
We have run distributed engagements across the EU and US for years. We adapt to how your team operates, hold real overlap on your hours, and keep you close to progress so you are never guessing. When a project benefits from meeting in person, we come to you. Distance has never been what decides a project. The people and the execution are.
Tell us what you’re building.
The complex, the critical, the bold. We’ll tell you how we’d ship it.