Senior Full-stack Developer (Databricks, Python/FastAPI)

About the Position

We are developing a new multi-cloud platform and want a Senior Full-stack Developer to build reliable Python/FastAPI APIs and React/TypeScript experiences. You will work with PostgreSQL, OpenSearch, and Databricks, focusing on integrations and performance. Apply now.

Responsibilities

• Deliver and maintain web applications built with Python/FastAPI and SQL
• Plan and design APIs and integrations that support high-load database operations
• Optimize query performance across live production systems
• Contribute UI functionality using TypeScript and React
• Use GenAI engineering tools to improve development workflows and throughput
• Collaborate closely with the team while executing autonomously on assigned tasks
• Communicate proactively with team members and stakeholders
• Take full ownership of product features and contribute beyond ticket completion
• Handle ambiguity and consistently deliver in a fast-paced startup environment

Requirements

• 5+ years of real-world production experience with Python, FastAPI, and SQL
• Solid background in web application delivery, API design, and system integrations
• Proficiency with high-load databases and query performance optimization techniques
• Ability to contribute on the front end using TypeScript and React while staying effective full-stack
• Experience using GenAI engineering tools, ideally Anthropic Claude
• Strong interpersonal communication and proactive collaboration skills, with ability to work independently
• Capability to succeed amid ambiguity and deliver without constant direction in a transparent, fast-moving startup environment
• English proficiency at B2 (Upper-Intermediate) level or higher

Nice to Have

• Hands-on skills with TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand
• Experience with PostgreSQL and OpenSearch in production contexts
• Familiarity with cloud platforms, Infrastructure as Code, and adjacent tooling
• Data engineering exposure, including PySpark and SparkSQL
• Client-facing experience

We Offer

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, and certifications (Anthropic, Gemini, GCP, Azure, AWS). English classes are also provided.

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, and offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee, and more. Corporate, social, and well-being events are also part of our offerings.

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.