April 25, 2026
Backend Python Developer
Senior • Remote
23,520 - 27,720 PLN
Warsaw, Poland
Backend Python Developer
We are looking for an experienced Backend Python Developer to join a long‑term project for the pharmaceutical industry. The project focuses on building reliable, secure, and scalable backend services that support critical business and data-driven processes in a regulated environment. High code quality, testability, and well-designed APIs are key success factors.
Work mode: 100% remote
Tasks
Designing and implementing backend services with a strong focus on API quality and reliability
Creating well-structured, self-documented REST APIs
Writing clean, maintainable, and testable Python code
Collaborating closely with other engineers and DevOps teams
Ensuring performance, security, and scalability of implemented solutions
Requirements
Solid understanding of best practices for API endpoint design and error handling
Practical knowledge of JWT tokens and authentication mechanisms
Strong experience with Python 3.12 or newer
Writing correctly typed code using Python typing
Practical experience with asynchronous programming
Knowledge of decorators and context managers
Habit of writing unit tests alongside production code
Hands-on experience with FastAPI and Pydantic
Good understanding of Dependency Injection
Ability to design correct and robust models (validation, sanitization)
Experience with self-documenting APIs using OpenAPI/Swagger
Practical experience with SQLAlchemy 2.0
Ability to write clear and reasonably efficient database queries
Basic understanding of Docker image creation principles
Ability to read and modify GitLab CI/CD pipelines
Practical experience navigating AWS services, especially: EKS, ECR, Load balancing
Fluent English
We offer
Ongoing support from a dedicated agent, taking care of your project continuity, client contact, necessary formalities, work comfort and development,
Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors,
Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle,
Spectacular integration events, both for you (e.g., annual Kick-Off trip, Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres),
Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients,
Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years,
A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.
About 7N
Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives.
Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.
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Warsaw, Poland
135 - 150 PLN
🏢 Summary: Oferta dla Senior Python Developera obejmuje rozwój i utrzymanie nowoczesnych systemów backendowych, projektowanie architektury oraz integrację usług w środowisku mikroserwisowym. Rola zakłada pracę z Pythonem, bazami danych, Dockerem i Kubernetes oraz udział w optymalizacji wydajności i mentoringu zespołu. Praca realizowana jest w modelu zdalnym z możliwością rozwoju zawodowego i udziału w innowacyjnych projektach. 🗂️ Requirements: Minimum 5 lat komercyjnego doświadczenia z Python, Znajomość Django lub FastAPI lub Flask, Doświadczenie z REST API, Znajomość SOLID, Znajomość DRY, Znajomość KISS, Doświadczenie z PostgreSQL lub MySQL, Znajomość Linux, Doświadczenie z WebSocket, Znajomość Jenkins lub GitLab CI lub GitHub Actions, Doświadczenie z architekturą mikroserwisową, Znajomość Elasticsearch, Znajomość Redis, Znajomość bezpieczeństwa aplikacji, Doświadczenie z Prometheus, Doświadczenie z Grafana, Doświadczenie z integracją systemów zewnętrznych, Podstawowa znajomość JavaScript, Umiejętność optymalizacji wydajności aplikacji backendowych, Znajomość języka angielskiego na poziomie B2 📃 Skills: Python, Django, FastAPI, Flask, REST, SQL, PostgreSQL, MySQL, Linux, WebSocket, Jenkins, GitLab, GitHub, Docker, Kubernetes, Elasticsearch, Redis, Prometheus, Grafana, JavaScript 🏢 Description: Poszukujemy doświadczonego Senior Python Developera, który dołączy do zespołu rozwijającego nowoczesne systemy backendowe. Szukamy osoby, która nie tylko tworzy wysokiej jakości kod, ale również aktywnie uczestniczy w projektowaniu architektury, podejmowaniu decyzji technicznych oraz wspiera rozwój zespołu poprzez dzielenie się wiedzą i dobrymi praktykami programistycznymi. Twoje zadania - Projektowanie, rozwój oraz utrzymanie aplikacji backendowych tworzonych w języku Python. - Współtworzenie architektury systemów oraz udział w analizie i doborze optymalnych rozwiązań technologicznych. - Analiza wyzwań technicznych i biznesowych oraz proponowanie skutecznych rozwiązań wspierających realizację celów projektu. - Tworzenie i rozwijanie testów automatycznych zapewniających wysoką jakość oprogramowania. - Dbanie o jakość, wydajność, bezpieczeństwo i łatwość utrzymania rozwijanych aplikacji. - Projektowanie oraz optymalizacja relacyjnych baz danych i zapytań SQL. - Przygotowywanie oraz utrzymywanie środowisk opartych o Docker i Kubernetes. - Integracja aplikacji z zewnętrznymi systemami i usługami z wykorzystaniem REST API oraz systemów kolejkowych. - Tworzenie i aktualizacja dokumentacji technicznej oraz architektonicznej. - Współpraca z interesariuszami przy analizie wymagań oraz wdrażaniu nowych funkcjonalności. - Wsparcie merytoryczne zespołu, mentoring mniej doświadczonych programistów oraz dzielenie się wiedzą. - Identyfikowanie potencjalnych ryzyk technicznych i rekomendowanie działań ograniczających ich wpływ na projekt. - Analiza i optymalizacja wydajności aplikacji backendowych oraz ich infrastruktury. Nasze oczekiwania - Minimum 5 lat komercyjnego doświadczenia w tworzeniu aplikacji w języku Python. - Bardzo dobra znajomość przynajmniej jednego z frameworków: Django, FastAPI lub Flask. - Doświadczenie w projektowaniu, implementacji i rozwijaniu usług REST API. - Znajomość wzorców projektowych oraz zasad tworzenia czystego kodu, takich jak SOLID, DRY i KISS. - Praktyczne doświadczenie w projektowaniu relacyjnych baz danych oraz pracy z PostgreSQL lub MySQL. - Dobra znajomość środowiska Linux i pracy z systemami opartymi na tym systemie operacyjnym. - Doświadczenie w implementacji komunikacji z wykorzystaniem WebSocket. - Znajomość narzędzi takich jak Jenkins, GitLab CI lub GitHub Actions. - Doświadczenie w projektowaniu i rozwijaniu aplikacji opartych na architekturze mikroserwisowej. - Praktyczna znajomość technologii NoSQL, w szczególności Elasticsearch oraz Redis. - Znajomość dobrych praktyk z zakresu bezpieczeństwa aplikacji. - Doświadczenie w monitorowaniu aplikacji i infrastruktury z wykorzystaniem narzędzi takich jak Prometheus i Grafana. - Doświadczenie w integracji z systemami zewnętrznymi. - Podstawowa znajomość JavaScript. - Umiejętność diagnozowania problemów wydajnościowych i optymalizacji działania aplikacji backendowych. - Znajomość języka angielskiego na poziomie B2. Oferujemy - Pracę w modelu zdalnym. - Możliwość rozwoju zawodowego oraz udziału w innowacyjnych projektach. - Preferencyjne pakiety do wykupienia w programach Multisport oraz Lux Med. - Przyjazną atmosferę pracy i dużą samodzielność w realizacji powierzonych zadań.
Healthcare
Momentum
Python Developer
Mid
Remote
Wroclaw, Poland
8,330 - 12,500 PLN
🏢 Summary: Backend-focused Python Developer role building scalable, high-performance web applications using FastAPI or similar frameworks. The position involves designing relational databases, implementing secure communication and authentication mechanisms, and contributing to architectural decisions. You will collaborate with cross-functional teams to deliver reliable, well-tested healthcare-oriented digital products. 🗂️ Requirements: 3+ years of commercial experience in Python development, Strong knowledge of FastAPI, Django or Flask, Experience designing relational databases (e.g. PostgreSQL), Ability to implement REST APIs and WebSockets, Hands-on experience with ORMs (SQLAlchemy or Django ORM), Experience implementing authentication mechanisms (JWT, OAuth, cookie-based), Familiarity with CI/CD pipelines, Experience with Docker and containerization, Knowledge of design patterns and SOLID principles, Proficiency in automated testing 📃 Skills: Python, FastAPI, Django, Flask, PostgreSQL, REST, WebSockets, SQLAlchemy, ORM, JWT, OAuth, CI/CD, Docker, GitHub, GitLab, SOLID, Testing 🏢 Description: About Momentum: At Momentum, we accelerate digital innovation in healthcare. Our mission is to empower HealthTech startups and scaleups by transforming ideas into cutting-edge digital products. We combine deep industry expertise, strategic consulting, and full-stack development to create solutions that drive growth, compliance, and patient impact. We believe in technology that makes healthcare more accessible, efficient, and human-centered. Role overview: Do you love writing clean, efficient Python code and solving complex problems? Join our team and help us build scalable, high-performance applications! We’re looking for a Python Developer who is passionate about backend development and has experience with commonly used frameworks such as FastAPI or Django, this role is for you! You'll have the chance to influence architectural decisions, optimize performance, and collaborate with a talented team of engineers and product experts. If you're a proactive problem solver who thrives in a dynamic environment, we'd love to hear from you! Requirements: Experience in Python (3+ years development experience) Strong knowledge of at least one framework: FastAPI (preferred), Django or Flask. Solid understanding of relational databases design (e.g. PostgreSQL) Ability to implement various ways of communication with client (e.g. REST API, WebSockets) Hands-on experience with Object-Relational Mappers (SQLAlchemy or Django ORM), including designing, optimizing and maintaining database schemas Ability to implement various ways of authentication (e.g. JWT, cookie-based auth, OAuth) Familiarity with CI/CD pipelines (GitHub Actions, GitLab CI or similar) and experience with containerization tools (Docker, Docker Compose). Practical knowledge of design patterns and SOLID principles Proficiency in testing Love for code review Fluent written and spoken English (B2+) Fluent written and spoken Polish (C1+) Nice to have: Practical knowledge of non-relational DBs, cache and message brokers systems Knowledge of Unix systems and shell Experience with Web Server (e.g. Nginx) Knowledge of asynchronous programming in Python (asyncio, async/await) and familiarity with task queues or background job frameworks (e.g. Celery) Familiarity with cloud environments (AWS, GCP or Azure) and basic skills in working with their services Experience in healthtech projects, familiarity with the specific challenges of the industry, such as data privacy regulations (e.g. HIPAA, GDPR in a medical context) or integration with health data standards (e.g. HL7, FHIR), is a big plus Responsibilities: Design and build web applications using Python (FastAPI) Design and implement relational databases Collaborate with cross-functional teams to define, design, and ship new features Write automated tests for your code including edge cases, usability, and general reliability Work on bug fixing and improving performance Continuously discover, evaluate, and implement new technologies What We Value: Clarity in focus and dedication to building digital products that elevate healthcare and improve quality of life. Flair to face challenges with boldness, creativity, and a proactive mindset. Grit to take ownership, stay ambitious, and deliver refined, high-quality solutions. Impact through meaningful innovation that makes pioneering medical discoveries accessible and human-centered. Ability to collaborate efficiently in teams of technical and non-technical individuals, and comfortable working in a dynamic environment with evolving objectives and iteration with users. What we offer: Modern Workspace: We provide a modern and comfortable office environment, right in the heart of Wrocław. Work-Life Harmony: Enjoy flexible working hours, allowing you to find the perfect balance between work and life. Stay Active: Our company Multisport benefit encourages you to stay fit and take care of your well-being. Your Health Matters: Access to private healthcare ensures you're taken care of when you need it most. Remote Support: For our remote team members we offer reimbursement for necessary and the non-necessary office visits. Freedom of choice: We understand that we all have different lifestyles and needs, that's why the Worksmile Cafeteria System gives you access to hundreds of non-wage benefits to choose from. Security and peace of mind: We provide the option to join our comprehensive insurance plan, for your and your loved one’s security. Team Building & Development Fun(d): We believe in the power of fun and development, and microfunds are here to bring some excitement into your work-life or you can access them to develop your skills and gain knowledge. Thinking of applying? Awesome! Here’s what happens next: As a standard, we keep our recruitment processes short and to the point. Here is a detailed breakdown of the workflow for this position: Initial phone interview (20 min): We'll have a quick chat to get to know each other and discuss your experience. It's a great opportunity for us both to see if there's a good fit. Recruitment task: Following the interview, we will send you a short task to complete. You will have three working days to complete and return it. Technical interview (45-60 min): If your task is successful, you'll be invited to a technical interview. You will meet with a senior team member to dive deeper into your technical knowledge and discuss your solution. Culture fit meeting (20-30 min): Next, you'll have a relaxed chat with our IT Team Manager and a recruiter. We'll talk about our company values and see if your working style aligns with ours. Work reference: After that, we'll ask you to share a work reference. Decision and feedback: After all the stages are complete, we'll get back to you with our final decision and detailed feedback on your application. If you have any questions, get in touch with us!