New offer - be the first one to apply!
July 7, 2026
Junior Python Developer
Junior • Hybrid
10,700 - 21,400 PLN/mo
Warsaw, Poland
Contract: B2B
Budget: 10,700–21,400 PLN net + VAT / month
Industry: Digital assets / trading systems
We are supporting a global digital asset trading firm in hiring a Junior Python Developer to join a small, highly technical engineering team.
This is a Python-first role for someone who already has commercial experience with Python and wants to develop further in a production environment close to trading infrastructure, real-time data and exchange integrations.
The role is primarily remote, but the client is building part of the team in Warsaw. Candidates should therefore be based in Warsaw or able to travel to Warsaw occasionally when needed.
You will work on systems supporting trading operations, market data flows, internal tools and backend services used in a live environment.
What you will work on
- developing and improving Python backend services
- building integrations with external APIs and crypto exchanges
- working with REST and WebSocket APIs
- processing and validating market data
- developing internal tools and automation for trading operations
- debugging production issues and improving system reliability
- working with databases, logs and service integrations
- collaborating with an international engineering team in English
What we are looking for
- around 1–2 years of commercial Python experience
- hands-on experience with Python backend development, APIs, integrations or production tools
- familiarity with FastAPI, Django, Flask, Celery, asyncio or similar technologies
- understanding of REST APIs, external integrations and basic database concepts
- experience with SQL and PostgreSQL or another relational database
- familiarity with Linux, Git and debugging
- strong problem-solving skills
- completed technical degree in Computer Science or a related field
- very good English (min. C1)
- based in Warsaw or willing and able to travel to Warsaw occasionally
Why this role may be interesting
- primarily remote work, with occasional collaboration from the Warsaw office
- opportunity to work on real production systems rather than only standard web applications
- exposure to market data, exchange integrations and trading infrastructure
- small engineering team with direct technical ownership
- strong learning environment and collaboration with experienced international engineers
- opportunity to grow in Python, backend development and digital asset trading
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Poznan, Poland
110 - 130 PLN/hr
🏢 Summary: B2B contract for an experienced Python Developer (100% remote) to build AI-driven solutions supporting banking sector projects. The role focuses on developing data processing, machine learning, and generative AI components, as well as APIs and backend services. The team delivers smaller AI initiatives aimed at automation, data analysis, and business process optimization. 🗂️ Requirements: Minimum 4 years of commercial experience in Python, Strong knowledge of Pandas, NumPy, Scikit-learn, PyTorch, HuggingFace, Experience building and exposing APIs with FastAPI, Practical experience with PostgreSQL, Experience with Docker containerization, Knowledge of machine learning and generative AI solutions, English proficiency at B2+ level 📃 Skills: Python, Pandas, NumPy, Scikit-learn, PyTorch, HuggingFace, FastAPI, PostgreSQL, Docker, AI, MachineLearning, GenAI 🏢 Description: Forma współpracy : kontrakt B2B Stawka (B2B PLN netto + VAT/h): 110-130 Tryb: 100% zdalny (spotkania w biurze w Poznaniu raz na kwartał) Poszukujemy osoby o profilu Python Developer , która posiada min. 4 lata komercyjnego doświadczenia. Wiodący stack technologiczny: Python, Pandas, NumPy, Scikit-learn, PyTorch, Hugging Face, FastAPI, PostgreSQL, Docker. Projekt który będziemy gotowi Ci zaproponować dotyczy tworzenia rozwiązań w obszarze Python development wspierających wdrażanie sztucznej inteligencji w sektorze bankowym. Zespół realizuje różne mniejsze projekty, których celem jest wykorzystanie AI do automatyzacji procesów, analizy danych i wspierania pracy biznesowej. Wymagania : minimum 4 lata doświadczenia w programowaniu w Pythonie w projektach komercyjnych dobra znajomość bibliotek i frameworków do analizy danych i uczenia maszynowego: Pandas, NumPy, Scikit-learn, PyTorch, Hugging Face doświadczenie w tworzeniu i eksponowaniu API przy użyciu FastAPI praktyczna znajomość baz danych, w szczególności PostgreSQL, oraz narzędzi do konteneryzacji, takich jak Docker wiedza i praktyczne pojęcie o rozwiązaniach sztucznej inteligencji, zarówno w kontekście uczenia maszynowego, jak i generatywnej AI znajomość języka angielskiego na poziomie min. B2+ Współpracując z naszą organizacją będziesz mógł/mogła liczyć na: Ugruntowaną pozycją rynkową Projekty, w których będziesz miał/miała wpływ na ich rozwój Współpracę z atrakcyjnymi klientami biznesowymi z różnych branż ( m.in .: finanse, bankowość, ubezpieczenia, healthcare, robotyzacja, energetyka, media) Permanentny mentoring zarówno techniczny jak i biznesowy np. podczas naszych cyklicznych szkoleń ( m.in . Git, Gitflow, Angular, Docker), czy wew. programów rozwojowych (Primaris x TechTalks, Primaris Leadership Academy) oraz zewnętrznych kursów. Już na etapie on-boardingu zapewniamy dostęp do naszych wewnętrznych szkoleń, cyklicznych spotkań, które serializujemy na Confluence oraz platformy e-learning Świetną atmosferę, wśród zaangażowanych ludzi z pasją w płaskiej strukturze z prostymi procesami Cały proces rekrutacyjny oraz onboarding prowadzony jest zdalnie. Proces rekrutacyjny składa się z: rozmowy telefonicznej z osobą z działu Rekrutacji & HR (do 30 min) zdalnej video rozmowy - weryfikacji techniczno-biznesowej z naszym specjalistą/specjalistką (60-90 min) zdalnego spotkania z liderem projektu (30-60 min) Primaris Services to ponad 250 ekspertów na pokładzie i 15 lat doświadczenia w branży IT na rynku polskim oraz zagranicznym. Realizujemy ambitne projekty o wysokiej złożoności z różnych obszarów - m.in . bankowości, ubezpieczeń, funduszy inwestycyjnych czy branży logistycznej (mamy ponad 40 aktywnych klientów!). Rośniemy w siłę oraz ciągle poszerzamy portfolio zarówno naszych usług jak i klientów. Zakres naszej działalności obejmuje budowę systemów od zera, ich rozwój oraz utrzymanie, wdrożenia produktowe, alokacje całych Zespołów, a także pojedynczych Ekspertów w strukturach Klienta. Ponadto od kilku lat działamy bardzo intensywnie jako złoty Partner firmy UiPath (obszar Robotic Process Automation) budując roboty i sprzedając licencje u naszych Klientów. Co miesiąc dołącza do nas 7 nowych osób! Wierzymy, że zgrany zespół i ludzie z pasją to klucz do naszego wspólnego sukcesu! Właśnie dlatego ciągle poszukujemy nowych, zdolnych osób, które zasilą nasze szeregi.