Senior Full-Stack Developer

‍Build the infrastructure that powers the next generation of life-science breakthroughs.

Biotech is moving faster than ever, but most labs still struggle with fragmented tools, poor data traceability, and architectures that don’t scale with real-world scientific workflows. Lab Thread exists to change that. We’re building a next-generation LIMS/ELN platform that unifies bioinformatics, automation, and cloud infrastructure into one coherent system. To get there, we need a Senior Full-Stack Developer who thinks in systems and takes ownership from idea to production.

SOFTWARE WITH REAL-WORLD CONSEQUENCE

Lab Thread is an engineering-driven biotech SaaS company founded in 2023. We are the digital nervous system for modern small and mid-sized laboratories — software that enables scientists to design DNA sequences, track experiments, and accelerate discoveries.

Here, the impact of your work is tangible: fewer failed experiments, better data integrity, and research that moves from bench to breakthrough sooner.

MODERN STACK, ZERO LEGACY

.NET · C# · React · Next.js · TypeScript · TailwindCSS · SQL Server · Redis · Entity Framework · Azure · Docker · Bitbucket Pipelines · CI/CD

We build on Clean Architecture and Domain-Driven Design, optimising for scalability, clarity, and long-term maintainability. No legacy burden, no inherited debt, no corporate bureaucracy — just real engineering decisions.

HIGH AUTONOMY, REAL OWNERSHIP

This is not a ticket-driven role. You will:

• Own features end-to-end — from database schema and API design to the final React component and deployment.
• Work directly with founders and product teams, influencing the technical roadmap from day one.
• Contribute to architecture, not just implementation — code reviews, engineering standards, tooling choices. 
• Work in a hybrid, flexible model built on trust, focus, and deep work.

THE SYSTEMS THINKER WE’RE LOOKING FOR

You’re a Senior Full-Stack Developer who understands that real-world systems are complex — and builds for long-term clarity anyway.

• 5+ years of full-stack experience, or 3+ years in a high-growth, high-impact environment.
• Strong hands-on experience with .NET / C# and the React ecosystem.
• Solid understanding of SQL Server, Redis, Entity Framework, and API design. 
• Experience with Azure, Docker, and modern CI/CD workflows. 
• Fluent in English and Bulgarian — able to explain architectural trade-offs to both engineers and scientists. 

Nice-to-haves:

• Experience with scientific or biotech software. 
• Exposure to AI/ML model integration. 
• Experience with micro frontends or modern auth systems (NextAuth.js / OpenID Connect).

YOUR ROADMAP TO SUCCESS

In 30 days: You’ve shipped your first major features to production and fully mapped our domain model.

In 6 months: You’ve optimised critical data pipelines on Azure and are leading the architectural design of new platform modules.

In 1 year: You’ve shaped engineering standards, mentored new hires, and can point directly to scientific progress your work has enabled.

WHY LAB THREAD

• Impact: Your code supports cancer research, gene therapy, and drug development — not abstract KPIs.
• Autonomy: A small, senior team where your decisions shape the product.
• Growth: Clear path to technical leadership and broader responsibilities.
• Compensation: Competitive salary + merit-based stock options for team members who drive outsized impact.
• Flexibility: Hybrid work and flexible hours focused on output, not office hours.
• Access: Direct collaboration with founders and decision-makers from day one.

Ready to build software whose impact you measure in discoveries, not sprint velocity? Send your CV — we’d love to talk.