Senior Full-Stack Engineer

💰 25,000–30,000 PLN + VAT/month (B2B) or employment contract · Remote (PL time zone) + office in Gdańsk

The mission

Security code review doesn't scale. Humans can't keep up with how fast code ships now, especially AI-written code. We're building an AI Security Engineer that reviews code like a top hacker would. Your job: build the product around it, from the workflows that run our agents to the UI security teams use every day.

Quick facts

• $6M raised, more on the way.

• 20 people across Poland (mainly Gdańsk) and San Francisco.

• Part of NATO DIANA.

• Customers: financial institutions and critical infrastructure.

The role

• Build across the whole stack. Most of the work is backend: durable workflows that run our security agents, APIs, and the data model underneath.

• Build integrations (GitHub, GitLab, MCP) and UIs for security workflows developers actually want to use.

• Help build the AI-powered features at the core of our product.

• Take features from prototype to production, messy parts included. You own what you build.

• Build for both our cloud and customers' environments, and keep services scalable, stable, and observable in both.

• Get requirements straight from the founders and the tech team, through real conversations, not a spec doc. Bring product ideas based on what users need.

• Write well-tested code, review others' code, and help improve how we work.

What we're looking for

• 5+ years of professional software development, mostly full-stack: TypeScript, Node.js, React/Next.js, REST APIs.

• Production experience with relational databases (we use MySQL) and backend systems: queues or workflows, retries, Docker, CI/CD, AWS.

• AI is part of your daily workflow: LLM APIs, agents, MCP, RAG, or coding agents like Claude Code or Cursor. You move faster with them and still understand what your changes touch.

• Security-minded by default: you know the OWASP Top 10 and write code that holds up.

• You've built things people use, not just things that pass a demo.

• Fluent English.

• Low ego. You'll tell a founder "we shouldn't build this" and back it up, and you're just as happy to be challenged.

Nice to have

• Temporal

• Kubernetes or on-prem deployments.

• Agentic workflows.

Want to work directly with customers on deployments? Check out our Forward Deployed Engineer role. Want to train and evaluate models? See Senior Applied AI Engineer.

The process

Intro call (45 min) → Technical session → CTO interview (30 min) → Team day in Gdańsk (travel covered) → Founder interviews → Offer

The process takes about three weeks. We reply only to shortlisted candidates.

Compensation

• 25,000–30,000 PLN + VAT/month on a B2B contract, or an employment contract.

• Health insurance, a gym budget, flexible hours, and a day off on your birthday.

Stack

TypeScript · Node.js · NestJS · Temporal · MySQL · React · Next.js · Tailwind CSS · Shadcn · Pulumi · AWS · Kubernetes