June 9, 2026
Python Engineer
Senior • On-site
300,000 - 600,000 PLN
Wroclaw, Poland
About the Client
Our client, a global leader in investment management, specializes in pioneering and data-centric strategies. The firm operates across all liquid asset classes globally, harnessing technology and data science to guide their investment strategies. The team comprises experts in data, technology, research, and trading who collaboratively tackle complex problems and achieve outstanding returns.
Role Summary
As a Python Developer, you'll be instrumental in developing systems and tools that integrate with the trading infrastructure and market mechanisms. Your duties will involve building data pipelines, analytical tools, and libraries to enhance execution analysis and trade performance. This role has been created due to the company's expansion and its objective of further refining trading capabilities.
Primary Responsibilities
- Analyze trading behaviors across various venues to discover execution issues and enhance latency and fill rates.
- Develop Python libraries, data pipelines, and tools to manage exchange protocols, order flows, and extensive trading datasets.
- Design analytical frameworks, metrics, and monitoring systems to assess execution quality and system performance.
- Oversee live trading systems with a focus on data integrity, pipeline durability, and real-time monitoring.
- Collaborate with stakeholders to translate analytical insights into tangible improvements in execution performance.
- Work closely with research and infrastructure teams to advance execution analysis and market behavior insights continuously.
Required Skills & Experience
- Bachelor's or advanced degree in Computer Science, Engineering, Mathematics, or a related quantitative field.
- Over 7 years of professional experience in Python development, including crafting libraries, data platforms, or analytical tools.
- Expertise with large-scale and time series datasets utilizing tools like NumPy and Pandas.
- In-depth SQL knowledge and experience with analytical databases.
- Strong problem-solving skills for analyzing complex data and system behaviors.
- Capability to translate analytical or trading-related challenges into reliable engineering solutions.
- Experience working in Linux environments and applying best practices in software engineering such as testing, version control, and continuous integration.
- Knowledge of financial markets, electronic trading, or execution analysis.
- Experience with low-level programming languages such as C, C++, or Rust is advantageous.
Compensation & Benefits
- Competitive salary based on experience
- Performance-based annual bonus
- Outstanding compensation package
Career Development & Growth
- Clear pathways for advancement to Senior Developer and Tech Lead roles
- Access to internal training resources and mentorship
- Regular hackathons and allocated conference budget
Ready to elevate your career? Join a team driven by innovation and collaboration. Apply today to be part of a forward-thinking company that values your expertise and supports your professional growth.
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Warsaw, Poland
21,000 - 25,000 PLN
🏢 Summary: Offer for an experienced Python Developer to design and develop cloud-based, data-driven solutions in GCP within the banking sector, focusing on data pipelines, analytics, and MLOps. The role involves building high-quality Python code, developing analytical solutions, and supporting data processing systems in a modern, quality-oriented environment. 🗂️ Requirements: Minimum 5 years of experience as Python Developer, Commercial experience in Python programming, Higher education degree in Computer Science, Mathematics or related field, Strong knowledge of SQL, especially analytical queries, Experience in building data pipelines, Experience working with cloud environments, Ability to write unit tests, Experience with code review and refactoring 📃 Skills: Python, SQL, GCP, BigQuery, GCS, Dataproc, PySpark, DataFrame, MLOps, JIRA, Confluence 🏢 Description: Wspólnie z naszym Partnerem, liderem w branży bankowej, poszukujemy doświadczonej osoby na stanowisko Python Developer. Zespół odpowiada za budowę i utrzymanie rozwiązań data-driven opartych o chmurę obliczeniową GCP. Prace obejmują tworzenie potoków danych, analitykę oraz rozwiązania z obszaru MLOps. Środowisko pracy opiera się na nowoczesnym stosie technologicznym z wysokim naciskiem na jakość kodu, automatyzację i współpracę interdyscyplinarną. 💡 TWOJA ROLA: Współpraca z analitykami biznesowymi, architektami IT oraz klientem biznesowym przy realizacji wymagań projektowych. Projektowanie, rozwój oraz dokumentowanie rozwiązań technicznych wspierających przetwarzanie i analizę danych. Tworzenie wysokiej jakości kodu w języku Python z wykorzystaniem dobrych praktyk programistycznych. Przeprowadzanie testów jednostkowych oraz dbanie o jakość rozwijanych rozwiązań. Budowa oraz rozwój potoków danych i rozwiązań analitycznych w środowisku GCP . Wsparcie techniczne oraz mentoring mniej doświadczonych programistów. Udział w code review oraz działaniach związanych z refaktoryzacją kodu. 🔍 CZEGO OCZEKUJEMY OD CIEBIE? Minimum 5 lat doświadczenia w roli Python Developer. Wykształcenia wyższego kierunkowego ( informatyka, matematyka lub kierunki pokrewne ). Dobrej znajomości języka SQL , w szczególności w zakresie zapytań analitycznych. Systematyczności, zaangażowania oraz wysokiej jakości komunikacji zespołowej. Umiejętności analitycznego myślenia oraz samodzielności w działaniu. Doświadczenia komercyjnego w programowaniu w języku Python . Umiejętności współpracy w środowisku interdyscyplinarnym. Mile widziane: Doświadczenie w pracy z Google Cloud Platform (BigQuery, GCS, Dataproc, Notebooks) . Znajomość PySpark w zakresie operacji na DataFrame. Znajomość narzędzi JIRA oraz Confluence . Doświadczenie w obszarze bankowości . ✨ OFERUJEMY: 🤖 Nowoczesny proces rekrutacji z AI Rekruterem (AIR) – podczas aplikacji możesz odbyć rozmowę z wirtualnym rekruterem 24/7, bez czekania na telefon. Dostajesz natychmiastowy feedback, a finalną decyzję zawsze podejmuje Rekruter Connectis. Możliwość uczestnictwa w spotkaniach integracyjnych oraz meetupach technologicznych, gdzie będziesz mógł/mogła dzielić się wiedzą i doświadczeniem. Praca w modelu hybrydowym - 4 dni zdalnie, 1 dzień z biura w tygodniu, (dla osób zamieszkałych poza Warszawą możliwość pracy zdalnej). Wsparcie dedykowanej osoby kontaktowej z Connectis, dostępnej w celu pomocy w sprawach związanych z projektem. Rozwój kariery i długofalową współpracę w firmie o ugruntowanej pozycji na rynku. 5000 PLN za polecenie znajomego do naszych projektów. Praca z nowoczesnego biura w Warszawie. Szybki, zdalny proces Dziękujemy za wszystkie zgłoszenia. Pragniemy poinformować, że skontaktujemy się z wybranymi osobami. 12879/PZ
Technology
7N
Python Developer with data pipeline
Senior
Remote
Warsaw, Poland
25,200 - 28,560 PLN
🏢 Summary: Role for an experienced Python Developer to design and maintain scalable systems and data pipelines for digital health solutions. The position involves building prototypes and MVPs, contributing to system architecture, and improving performance and reliability of applications. It requires strong expertise in scalable software development and hands-on data pipeline implementation. 🗂️ Requirements: 5+ years of experience with Python, Hands-on experience building data pipelines, Strong knowledge of software architecture, Experience with scalable systems development, Ability to design and maintain high-quality codebases 📃 Skills: Python, AWS, Azure, CI/CD, SQL, Elasticsearch, OpenSearch, Neptune, Neo4j 🏢 Description: Python Developer with data pipeline About the project We are seeking a Python Developer with data pipeline for a global life‑science company driving innovation in digital health . You will build and maintain scalable applications, working closely with cross‑functional teams and contributing to new features and MVPs. Success in this role requires strong system architecture skills, hands‑on experience with scalable software, and a passion for experimentation and rapid prototyping. Tasks Develop and maintain scalable systems and data pipelines Build prototypes and MVPs to test new ideas Contribute to system architecture and high‑quality coding practices Improve performance, reliability, and maintainability of solutions Expectations 5+ years of experience with Python Hands-on experience building data pipelines Strong understanding of software architecture and scalable development Clear and effective communication skills Advanced English proficiency (C1 level) Nice to have Experience with AWS services Azure DevOps CI/CD pipelines Relational databases Elasticsearch/OpenSearch Graph databases (e.g., Neptune, Neo4j) 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.