Lead Full-stack Developer

We're seeking a Lead Full-stack Developer to help build a new product powered by Python and FastAPI on the backend, React/TypeScript on the frontend, and PostgreSQL and OpenSearch for database management. This product runs in a multi-cloud setup and relies extensively on Databricks.

Responsibilities

  • Build and maintain web applications leveraging Python/FastAPI and SQL
  • Architect APIs and integrations capable of supporting demanding database workloads
  • Improve query performance throughout production environments
  • Support front-end work involving TypeScript and React
  • Utilize GenAI engineering tools to streamline development processes
  • Work both collaboratively and independently on assigned responsibilities
  • Maintain proactive communication with teammates and stakeholders
  • Own product features and go beyond simply closing tickets to make meaningful contributions
  • Handle ambiguous situations and produce results within a fast-paced startup setting

Requirements

  • Minimum of 7 years working in production with Python, FastAPI, and SQL
  • Strong background in building web applications, designing APIs, and creating integrations
  • Skilled at managing high-load databases and enhancing query performance
  • Some exposure to TypeScript and React front-end work, along with openness to full-stack responsibilities
  • Practical experience using GenAI engineering tools, Claude Code experience preferred
  • Excellent communication abilities and self-motivation, with comfort working solo or as part of a team
  • Ability to navigate uncertainty and execute tasks independently in an open, rapidly evolving startup
  • English language skills at B2 level or above

Nice to have

  • Strong familiarity with TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand
  • Background working with PostgreSQL and OpenSearch
  • Knowledge of cloud platforms, Infrastructure as Code, and associated tooling
  • Data engineering exposure, particularly with PySpark and Spark SQL
  • Prior experience interacting directly with clients

Benefits

We gather like-minded people:

  • Top tech minds driving innovation in AI, cloud and digital platform modernization
  • Supportive team and agile, startup-like culture
  • Hybrid by design mode and opportunity to work remotely within Poland
  • Chance to work abroad for up to 60 days annually
  • Business-driven relocation opportunities

We provide growth opportunities:

  • Career development programs
  • Thought leadership, mentoring, soft skills and well-being programs
  • Certification (Anthropic, Gemini, GCP, Azure, AWS)
  • English classes

We cover it all:

  • Stable pay
  • Participation in the Employee Stock Purchase Plan with a 15% discount
  • Benefits package (health insurance, multisport, shopping vouchers)
  • Referral bonuses up to $2,000
  • Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
  • Corporate, social and well-being events

Please, note:

  • Benefits listed above are available to employees only
  • We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
  • We will reach out to selected candidates exclusively

See also

Full-Stack jobs by country — openings, pay and top skills →

Tailor your CV for this role?

We couldn't check your fit for this role — add a CV to your profile to see it next time.

A new version of freehire is available