Senior Software Engineer

On The Spot Development is a software development company that builds R&D teams for heavily invested startups and tech companies from the UK, EU, and Israel.
We bring startups and disruptive tech companies to the local market, offering engineers the opportunity to work on innovative, high-impact products.

We’re looking for a talented, self-driven software engineer to build an AI-based personal knowledge management assistant from scratch.

On The Spot bring startups and disruptive tech companies to the local market, offering engineers the opportunity to work on innovative, high-impact products.

Join us and become a member of their R&D teams while we take care of employment, HR support, a benefits package, and an enjoyable work environment.

• Take full ownership of building the product from scratch
• Design and implement core architecture and infrastructure
• Implement and integrate AI models and external APIs
• Make technical decisions independently and ensure high code quality

• Bachelor’s degree in Computer Science, Engineering, or relevant experience
• 7+ years of experience in Python / (TypeScript or Javascript) development
• Proven experience with LLM frameworks (LangChain, LlamaIndex or similar)
• General understanding of MCP and A2A protocols
• Strong knowledge of PostgreSQL
• Experience with cloud platforms (Google Cloud Platform, AWS, Azure)
• Solid understanding of software design principles, concurrency, synchronization, memory management, data structures, algorithms, etc.
• Ability to prioritize and organize effectively with good communication skills
• Strong analytical and troubleshooting skills

• Work in a highly professional team. Informal and friendly atmosphere in the team
• Paid vacation — 20 business days per year, 100% sick leave payment
• Equipment provision
• Partially compensated educational costs (for courses, certifications, professional events, etc.)
• Legal and Accounting support in Poland or Belarus
• Ability to work from our comfortable downtown office in Warsaw or Minsk
• 5 sick days per year
• Medical insurance (after the end of the probationary period)
• English/Polish classes 2 times a week (online)
• Bright and memorable corporate life: corporate parties, gifts to employees on significant dates