Opis stanowiska

This is a role that TechTree is recruiting for on behalf of one of our clients.

TechTree is an AI-driven recruitment platform working with high-growth companies.

When you apply, our AI Agent matches you not just to this role, but to other relevant opportunities across our network, so one application can unlock multiple roles.

About the Role

As a Full Stack Engineer, you will join the core platform engineering team and contribute directly to the development, scalability, and reliability of mission-critical software supporting defence and supply chain operations.

You will work closely with engineering leadership, founders, and customer-facing deployment teams to design, build, and maintain systems that integrate with complex legacy environments and support high-value workflows. The role requires ownership of end-to-end features and direct engagement with forward-deployed operations to ensure solutions meet real-world needs.

What You'll Be Doing

Design, develop, and maintain full-stack application functionality across frontend interfaces, backend services, APIs, and database schemas
Implement integrations with external systems, including legacy government and enterprise platforms
Translate customer requirements from forward-deployed teams into production-ready features that drive measurable outcomes
Ensure code quality through testing, documentation, and code reviews while maintaining a customer-centric focus
Support onboarding and technical development of new engineering team members as the team grows

What We're Looking For

A track record of shipping production projects and products end-to-end
Strong proficiency in TypeScript and JavaScript, with experience in at least one frontend framework (React, Svelte, Next.js, etc.)
Solid knowledge of SQL databases, preferably PostgreSQL, including schema design and data modelling
Strong understanding of software engineering best practices, testing, and long-term maintainability
High accountability and ability to operate effectively in fast-moving, high-stakes environments

Nice to Have

Experience building software for high-security or operationally sensitive environments
Exposure to AI-native or workflow-automation platforms

Compensation & Benefits

$75,000 – $150,000 salary depending on experience
0.05% – 0.3% meaningful equity at seed stage
Onsite in Warsaw, with direct exposure to customer deployments
Structured onboarding and mentorship from engineering leadership
Opportunity for early ownership and impact in a high-growth startup

About the Company

Our client is building the AI-native command centre for defence logistics, helping distributors and manufacturers in the US defence industrial base streamline critical workflows.

The platform reduces reliance on legacy infrastructure, automates manual bottlenecks, and accelerates quoting, contracting, and delivery for national security operations.

Seed-stage startup with a small, highly empowered core engineering team working directly with founders and deployment strategists.

What is TechTree?

TechTree combines AI agents with a human support team to give candidates a better, more transparent hiring experience.

Our AI Agent gets to know your background, experience, and what you're optimising for. It continuously matches you to live roles across our network where there's genuine alignment, not just keyword overlap.

Our Human Team is there to support you through the process:

Answer questions about roles, process, and next steps
Add context when something in your background isn't obvious
Help unblock stalled processes or unclear feedback
Make sure you're not left guessing, ghosted, or wasting time

We only post real jobs. Every role on TechTree is a live, active hire.

If you apply: you'll be considered for this role, you may also be matched to other relevant roles, and if there's no fit, we won't spam you.

Full Stack Engineer (+ Equity) at Seed-stage defence logistics startup

TechTree