Our client is a technology company building robust, scalable systems, comparable to leaders like MongoDB and HashiCorp. They are at an early stage and need a senior fullstack engineer to design and implement new products from the ground up. This role exists to drive architecture and hands-on development without reliance on established frameworks, targeting candidates who thrive in ambiguity and autonomy.
Priority will be given to candidates with the right to work in the UK.
π§ Core expectation (what they really want)
A senior-level systems engineer (7+ years) who can:
- Build backend + frontend systems end-to-end
- Design distributed systems and architecture from scratch
- Make independent technical decisions without frameworks
- Work in high ambiguity, early-stage environment
- Own product development from concept β production
Critical requirements
Go is mandatory and central to the role. We are specifically looking for someone who:
- Has deep production Go experience
- Builds scalable backend systems in Go
- Understands Go in the context of: microservices, APIs, system design, cloud-native infrastructure
- Can use Go as the primary systems language, not just secondary tooling
π If you donβt have strong Go in production, you are automatically filtered out.
Technical scope
You are expected to work across the full stack:
Backend (primary focus)
- Go-based microservices
- APIs and distributed systems
- Databases (SQL + NoSQL)
- Cloud infrastructure
Frontend (secondary but required)
- Ability to build interfaces when needed
- Not necessarily deep frontend specialization, but full ownership expected
Systems level
- Architecture design
- Performance optimization
- Scalability decisions
- Technology selection (no rigid stack)
π Ideal candidate profile has
- Built 0β1 products in startups
- Worked without rigid frameworks
- Golang hands-on experience
- Shipped systems independently end-to-end
- Strong polyglot engineering ability
- Experience choosing and integrating technologies into production
- Comfortable in remote EU-based distributed teams
π’ Strong signals (green flags)
- Built products from scratch in early-stage startups
- Designed system architecture independently
- Deep Go production experience
- Experience with distributed systems / microservices
- Strong autonomy + ownership mindset
- Has shipped real production systems, not just internal tools
Compensation & benefits
Salary to be discussed DOE + Equity 0.1β0.25% equity Perks
Opportunity to shape architecture and technology from day one Collaborative, hands-on work
environment.
Key Skills
Ranked by relevance
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- Posted
- May 09, 2026
- Type
- Full-time
- Level
- Mid-Senior
- Location
- United Kingdom
- Company
- TechTree
Industries
Categories
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