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Senior Full Stack Developer
About On The Spot
About the team
AITHENA is a startup focused on creating an AI-powered tool to enhance the regulatory review process in the pharmaceutical industry.
Our goal is to build an AI-powered assistant for document analysis and review related to pharmaceutical regulations, enabling efficient search and user query responses based on a comprehensive database of legal case documents.
About the role
We are seeking a Senior Full-Stack Developer to build and maintain robust backend services while implementing UI components for their own features within an existing application.
The primary focus will be on backend development — designing scalable APIs, optimizing performance, and ensuring high reliability — while contributing to front-end tasks as needed to deliver complete, end-to-end functionality in an Agile environment.
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Responsibilities
- Write clean, concise, and scalable code, ensuring stability and proper unit testing
- Diagnose complex technical issues, evaluate options, and implement optimal solutions
- Implement new requirements in an Agile environment, adhering to architectural principles and standards
- Collaborate with the team to provide input on architecture and design, ensuring solutions are aligned with best practices
- Work on performance optimization, testing, and troubleshooting
Requirements
- 5+ years of experience in development with Python
- Experienced in frontend development using React
- Strong analytical and troubleshooting skills
- Knowledge of PostgreSQL and experience with designing and implementing data-intensive systems
- Solid understanding of software design principles, concurrency, synchronization, memory management, data structures, algorithms, etc.
- Ability to prioritize and organize effectively with good communication skills
- English B1+
Nice to have
- Basic DevOps skills, including Google Cloud Platform, K8S, Docker, CI/CD, and GitHub actions
- Experience with LLM frameworks (LlamaIndex or LangChain)
- Linux administration skills
Benefits
- 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
- Ability to work from our comfortable office in Warsaw at Prosta 51
- 5 sick days per year
- Medical insurance (after the end of the probationary period)
- English and Polish classes 2 times a week (online)
- Flexible working hours – we care about you (!) and your output
- Bright and memorable corporate life: corporate parties, gifts to employees on significant dates
Join us
To be considered for this position in Poland, you must have Polish citizenship, a D-type work visa, or a residence permit. Thank you!
Contribute to our growth
Know someone perfect for this role? Let us know about them. We have a referral program to recognize your support.
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