Junior Python Developer

🏢 Summary: Junior Python Developer role focused on backend systems supporting digital asset trading infrastructure, market data flows, and exchange integrations in a primarily remote B2B setup. The position involves building and maintaining Python services, APIs, automation tools, and production integrations within a small international engineering team. Candidates should have commercial Python experience, backend development knowledge, and availability for occasional collaboration in Warsaw. 🗂️ Requirements: 1–2 years commercial Python experience, Python backend development experience, Experience with APIs and integrations, Knowledge of REST APIs, Experience with SQL, Knowledge of PostgreSQL or another relational database, Familiarity with Linux, Familiarity with Git, Debugging skills, Computer Science or related technical degree, English level C1, Based in Warsaw or able to travel occasionally 📃 Skills: Python, FastAPI, Django, Flask, Celery, asyncio, REST, WebSocket, SQL, PostgreSQL, Linux, Git 🏢 Description: Junior Python Developer | Trading Systems Location: Poland-based, with occasional presence in Warsaw 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 . The exact office frequency is still being defined, but this is not a full-time office-based role. 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 You may be a good fit if you have: 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) - the recruitment process and daily work are conducted in English, are 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. Interested? Apply with your CV and we will contact selected candidates with more information.

🏢 Summary: Remote B2B opportunity for a Junior Python Developer to work on trading systems, market data flows, backend services, and exchange integrations in a digital assets environment. The role focuses on Python backend development in a production setting with exposure to real-time trading infrastructure and international collaboration. 🗂️ Requirements: 1–2 years commercial Python experience, Python backend development experience, Experience with APIs and integrations, Knowledge of REST APIs, Experience with SQL, Experience with PostgreSQL or another relational database, Familiarity with Linux, Familiarity with Git, Debugging skills, Technical degree in Computer Science, Software Engineering, Mathematics, Physics, Electrical Engineering or related field, Very good English 📃 Skills: Python, FastAPI, Django, Flask, Celery, asyncio, REST, WebSocket, SQL, PostgreSQL, Linux, Git 🏢 Description: Junior Python Developer | Trading Systems Location: 100% remote from 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. 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 We are looking for someone who wants to build their career in Python backend development and is comfortable using Python as their main programming language. You may be a good fit if you have: 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, Software Engineering, Mathematics, Physics, Electrical Engineering or a related field, very good English - the recruitment process and daily work are conducted in English. Why this role may be interesting 100% remote work from Poland, B2B cooperation, 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. Interested? Apply with your CV and we will contact selected candidates with more information!

🏢 Summary: Junior Python Developer role focused on building and developing backend applications and data processing solutions. The position involves integrating systems via APIs, implementing data processing workflows, and deploying solutions to test and production environments. The role also includes writing unit tests and supporting development process automation. 🗂️ Requirements: Strong knowledge of Python, Experience with Python frameworks or libraries (FastAPI, Django, Flask, Pandas), Ability to write clean and testable code, Experience with Git, Knowledge of Docker, Understanding of REST and GraphQL APIs, Experience in data processing implementation, Ability to write unit tests 📃 Skills: Python, FastAPI, Django, Flask, Pandas, Git, Docker, REST, GraphQL, APIs, Testing, Containerization, Data-processing 🏢 Description: Szukamy osoby na stanowisko Junior Python Developer lub Junior Python Developerka , która chce rozwijać się w pracy z danymi, systemami backendowymi i nowoczesnymi technologiami. Twój zakres obowiązków: Tworzysz i rozwijasz aplikacje i usługi w języku Python. Integrujesz systemy poprzez API (REST, GraphQL). Projektujesz i implementujesz procesy przetwarzania danych (strukturalnych i niestrukturalnych). Wdrażasz i utrzymujesz rozwiązania w środowiskach testowych i produkcyjnych. Tworzysz i utrzymujesz dokumentacje techniczną. Piszesz testy jednostkowe i automatyzujesz procesy developerskie. Współpracujesz z zespołem analityków, inżynierów i biznesem również  w zakresie rozwoju systemów i integracji. Nasze wymagania: Dobrze znasz Python i masz dobre praktyki programistyczne. Masz doświadczenie w pracy z frameworkami i bibliotekami Python (np. FastAPI, Django, Flask, Pandas). Umiesz pisać czysty, czytelny i testowalny kod. Masz doświadczenie w pracy z systemami kontroli wersji (Git). Znasz Dockera i podstawy konteneryzacji. Umiesz pracować w zespole masz analityczne podejście do rozwiązywania problemów. Mile widziane: Masz doświadczenie w pracy z chmurą (Google Cloud, Azure). Umiesz tworzyć proste interfejsy użytkownika (np. Streamlit, Gradio). Oferujemy: Stabilne zatrudnienie w oparciu o umowę o pracę lub kontrakt. Pracę stacjonarną lub hybrydową 2 dni w tygodniu w nowoczesnym biurze w Krakowskim Parku Technologicznym – Czyżyny ul. Prof. M. Życzkowskiego 18. Pakiet socjalny m.in : kartę MultiSport lub Medicover Sport, opiekę medyczną, grupowe ubezpieczenie, zniżki na badania laboratoryjne, kursy językowe online. Cykliczne imprezy i wyjazdy integracyjne.

🏢 Summary: Oferta B2B dla Python Developera na hybrydową pracę przy tworzeniu nowoczesnych backendów, REST API i architektury mikroserwisowej. Rola obejmuje rozwój usług, integracje z bazami danych i systemami zewnętrznymi, testowanie oraz współpracę przy CI/CD i projektowaniu rozwiązań technicznych. 🗂️ Requirements: Minimum 3 lata komercyjnego doświadczenia w Pythonie, Bardzo dobra znajomość frameworków do budowy API, Doświadczenie z SQL i ORM, Doświadczenie z Dockerem i Git, Doświadczenie w testach automatycznych, Znajomość zasad clean code i wzorców projektowych 📃 Skills: Python, FastAPI, Flask, Django, REST, SQL, ORM, Docker, Git, pytest, OpenAPI, Swagger, CI/CD 🏢 Description: Python Developer Lokalizacja: Warszawa Forma pracy: Hybrydowo Współpraca: B2B Stawka: 110-150 PLN/h Kogo szukamy: Do zespołu poszukujemy Python Developera, który chce tworzyć nowoczesne backendy, rozwijać mikroserwisy i mieć realny wpływ na architekturę tworzonych rozwiązań. Szukamy osoby, która dobrze odnajduje się w środowisku technologicznym, lubi pisać czysty kod i chce pracować przy projektach rozwijanych w nowoczesnym stacku. BĘDZIESZ: tworzyć i rozwijać backendowe usługi oraz REST API w oparciu o Python i frameworki FastAPI / Flask / Django REST Framework, implementować logikę biznesową oraz integrować systemy z bazami danych i usługami zewnętrznymi, projektować i rozwijać architekturę mikroserwisową, przygotowywać oraz utrzymywać dokumentację API (OpenAPI / Swagger), pisać testy automatyczne z wykorzystaniem pytest, współpracować z zespołem DevOps przy wdrożeniach i utrzymaniu środowisk CI/CD, optymalizować wydajność aplikacji i dbać o wysoką jakość kodu, uczestniczyć w projektowaniu rozwiązań technicznych oraz usprawnianiu procesów developerskich. WYMAGANIA: masz minimum 3 lata doświadczenia komercyjnego w Pythonie, bardzo dobrze znasz frameworki służące do budowy API, posiadasz doświadczenie w pracy z SQL i ORM, pracowałeś/-aś z Dockerem, Git oraz testami automatycznymi, znasz zasady clean code oraz wzorce projektowe, potrafisz samodzielnie analizować problemy i proponować rozwiązania, cenisz dobrą komunikację i współpracę zespołową, chcesz rozwijać nowoczesne rozwiązania backendowe. Co oferujemy: Pracę na kontrakcie B2B Dostęp do systemu myBenefit, w tym prywatne ubezpieczenie medyczne, Multisport i wiele innych Prezenty na różne okazje Wydarzenia firmowe

🏢 Summary: Backend Developer role in a global digital asset trading firm, working remotely on live production trading systems and infrastructure. The position focuses on backend services, exchange integrations, real-time market data processing, and reliability improvements within a small, highly technical team. It offers direct impact on trading operations and close collaboration with trading infrastructure in a crypto-focused environment. 🗂️ Requirements: Degree in Computer Science, Electrical Engineering, Software Engineering or related field, Hands-on experience with Python, C++ or another backend/systems language, Understanding of APIs, integrations and production systems, Experience with Linux and debugging, Strong problem-solving skills, Interest in trading systems, financial markets or crypto infrastructure, Very good English proficiency 📃 Skills: Python, C++, REST, WebSocket, Linux, Docker, SQL, PostgreSQL, Redis, Kafka, ClickHouse, APIs, Networking, Concurrency, Algorithms 🏢 Description: Location: 100% remote from Poland Contract: B2B Budget: 10,700–21,400 PLN net + VAT / month Seniority: Junior+ / Mid Industry: digital assets / trading systems We are supporting a global digital asset trading firm in hiring a Backend Developer to join a small, highly technical engineering team working on live production trading systems. You will be working close to trading infrastructure, exchange connectivity, real-time data, reliability, and internal tools used in a production trading environment. The company operates internationally and is now expanding its presence in Poland. What you will work on Depending on your experience and strengths, you may be involved in: building and improving backend services supporting trading operations, integrating with external APIs and crypto exchanges, working with REST / WebSocket APIs, processing real-time market data, improving reliability of production systems, debugging issues in live trading infrastructure, building internal tools and automation for trading operations, collaborating closely with a small technical team. What we are looking for We are looking for someone with strong backend or systems engineering foundations who enjoys solving technical problems and wants to work closer to trading infrastructure. You may be a good fit if you have: a degree in Computer Science, Electrical Engineering, Software Engineering or a closely related technical field , hands-on experience with Python good understanding of APIs, integrations and production systems, experience with Linux and debugging technical issues, strong problem-solving skills and ability to explain your thinking clearly, interest in trading systems, financial markets, crypto infrastructure or real-time systems, very good English - the recruitment process and daily cooperation are in English . Nice to have Any of the following would be a strong plus: experience with trading systems, market data, order books or exchange connectivity, experience with crypto, blockchain, DeFi, market-making, arbitrage or digital assets, experience with WebSocket APIs and real-time data flows, experience with low-latency, high-throughput or performance-sensitive systems, knowledge of algorithms, data structures, concurrency, networking or distributed systems, experience with Docker, SQL, PostgreSQL, Redis, Kafka, ClickHouse or similar technologies. Why this role may be interesting 100% remote setup, B2B cooperation, direct impact on live production trading systems, small technical team with strong ownership, opportunity to work close to crypto trading infrastructure, practical engineering work, not only feature delivery, environment where problem-solving, technical clarity and ownership matter. Sounds interesting? Apply and share your CV. We will contact selected candidates with more details about the company, role and next steps.

🏢 Summary: Senior Python Developer role focused on building high-performance data pipelines and monitoring solutions for low-latency trading systems. The position involves processing network packet data, developing analytics tools, and enhancing real-time trading infrastructure. It offers direct impact on trading performance within a financial technology environment. 🗂️ Requirements: Minimum 3 years of software development experience, Professional experience with Python, Experience with Shell scripting, Experience in data analytics and time series analysis, Basic knowledge of TCP/IP, UDP and Ethernet protocols, Understanding of GNU/Linux kernel and OS internals, Basic knowledge of C/C++, Fluent English, Legal right to work in the European Union 📃 Skills: Python, Shell, TCP/IP, UDP, Ethernet, Linux, GNU, C, C++, Analytics, TimeSeries 🏢 Description: Empower the Future of Trading — Shape High-Performance Data Pipelines in a Dynamic Financial Ecosystem! Wroclaw-based opportunity with on-site work model (5 on-site days per week allowed). As a Senior Python Developer – Trading Technology & Data Pipelines , you will be working for our client, a leading financial technology firm specializing in low-latency trading strategies. Join a team of innovative engineers and researchers dedicated to optimizing and transforming trading performance through cutting-edge data solutions and monitoring tools. This role offers a unique chance to directly influence trading outcomes and advance your career in financial technology. Your main responsibilities: Develop tools to collect and aggregate data from complex trading systems. Design and implement data pipelines to process network packet captures for low-latency network analysis. Build monitoring solutions with anomaly detection for network traffic and system metrics. Collaborate with the team to optimize trading strategies and improve system performance. Gain expertise in financial markets and trading technology while proposing measurable improvements. Contribute to high-performance data infrastructure supporting real-time trading decisions. Work closely with engineers to streamline data flows and enhance system reliability. You're ideal for this role if you have: At least 3 years of experience in software development, preferably in trading or finance. Strong proficiency in Python and Shell scripting. Experience in data analytics and time series analysis. Basic knowledge of TCP/IP, UDP, and Ethernet protocols. Understanding of GNU/Linux kernel and operating system internals. Fundamental knowledge of C/C++ programming. An interest in financial markets and trading technology. It is a strong plus if you have: (optional) Certifications or experience in network analysis or low-latency systems. Language Required for the role: Fluent in English, with excellent communication skills to collaborate effectively. Eligibility to work on this role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Opportunity for a Senior Python Developer to build advanced risk management platforms for global financial institutions within demanding trading environments. The role focuses on developing scalable backend systems, contributing to cloud-based architectures, and collaborating with international clients and senior engineers. It offers high technical ownership, exposure to quantitative finance, and work across multiple modern technologies. 🗂️ Requirements: Strong commercial experience in Python backend development, Degree in Computer Science, Mathematics, Physics, or related field, Solid understanding of software architecture, algorithms, and data structures, Experience with cloud platforms (AWS, Azure, or GCP), Ability to work across multiple programming languages and tech stacks, Confident English communication skills, Willingness to work in hybrid model (4 days in Warsaw office) 📃 Skills: Python, Go, Rust, C++, TypeScript, AWS, Azure, GCP, Algorithms, DataStructures, Cloud 🏢 Description: 💎 Senior Python Developer 💎 A rare opportunity has arisen for an ambitious, highly technical Senior Python Developer to join an elite engineering team building advanced risk management solutions for global financial institutions. In this role, you will work on complex backend systems used within highly demanding financial and commodities trading environments, collaborating closely with top-tier engineers and international clients. You will contribute to the development of scalable risk platforms while working across modern cloud infrastructure and multiple programming languages. If you enjoy solving difficult engineering problems, working alongside exceptionally strong developers, and building software with real business impact… Feel invited! This role offers a unique combination of technical depth, ownership, and exposure to the world of quantitative finance. WHAT WE OFFER B2B contract Competitive salary + biannual bonus Flexible working hours Hybrid work - 4 days from the office located in Warsaw Work closely with experienced engineers from top financial and technology companies International projects and collaboration with global clients Opportunity to grow within a highly technical, developer-driven culture YOUR ROLE Develop and maintain backend systems primarily in Python Build and extend risk management software for financial institutions Design scalable and maintainable solutions for complex business requirements Collaborate directly with international clients and technical stakeholders Work across multiple technologies including Python, Go, Rust, C++, and TypeScript Contribute to cloud-based solutions running on AWS and Azure Participate in architectural discussions and technical problem solving Continuously improve platform reliability, performance, and scalability IF YOU ARE A PERSON WHO Has strong commercial experience with Python backend development Holds a degree in Computer Science, Mathematics, Physics, or a related field Has solid understanding of software architecture, algorithms, and data structures Feels comfortable working across multiple programming languages and tech stacks Communicates confidently in English and enjoys working directly with clients Has experience with cloud platforms such as AWS, Azure, or GCP Understands financial systems or has previous exposure to financial markets (nice to have) Thrives in highly collaborative, engineering-driven environments Enjoys solving complex technical challenges together with the team in the office Congrats! This offer is especially for YOU!

🏢 Summary: Join an international Agile team as a Python Developer building a strategic vehicle-pricing platform. The role focuses on scalable data pipelines, backend services, REST APIs, and integrations that turn large internal and external datasets into reliable pricing insights. 🗂️ Requirements: 3+ years of professional Python backend and data development experience, Strong Python proficiency and Pandas experience, FastAPI or Flask experience, SQL proficiency and PostgreSQL experience, Data-pipeline development and orchestration experience, Git, code review, testing, and CI/CD practice familiarity, Fluent English and Polish communication skills, Availability to work from the Warsaw office 2–3 days per week 📃 Skills: Python, Pandas, FastAPI, Flask, SQL, PostgreSQL, Airflow, Git, CI/CD, REST 🏢 Description: We are looking for a Python Developer to join our international team developing a strategic platform that powers vehicle pricing and recommendation processes across the organization. The solution collects and processes large volumes of internal and external data, transforms it into a unified data model, and delivers pricing insights through modern APIs. As a Python Developer, you will play a key role in building scalable data pipelines, backend services, and integrations while collaborating closely with product owners, architects, and software engineers in an Agile environment. Your tasks Designing, developing, and maintaining data ingestion and transformation pipelines Building and evolving the data model with a strong focus on data quality, consistency and reliability Developing and maintaining Python backend services and REST APIs that expose pricing and vehicle-related data Integrating internal and external systems through APIs and event-driven data flows Writing clean, well-documented and well-tested code while ensuring production stability through monitoring and data quality checks Collaborating closely with Product Owners, Architects, Scrum Masters and Developers to deliver scalable business solutions Requirements At least 3 years of professional experience as a Python Developer with a focus on backend and data development Strong proficiency in Python, including experience with data-processing libraries such as Pandas Experience with frameworks such as FastAPI or Flask Solid SQL skills and hands-on experience with relational databases, particularly PostgreSQL Experience building and orchestrating data pipelines, ideally using Airflow Familiarity with Git, code reviews, testing, and CI/CD practices Fluent English and Polish communication skills, with experience working in an international environment Willingness to work from the Warsaw office 2–3 days per week Nice-to-have requirements Experience with Angular

🏢 Summary: Hybrid Senior Python (Django) role focused on developing and maintaining internal backend systems and business services with elements related to AI solutions. The position involves backend development, SQL Server optimization, API design, and integration of internal services in a long-term project. The role offers real impact on system architecture and collaboration with product and technical teams. 🗂️ Requirements: Minimum 5 years of commercial experience in Python, Very good knowledge of Python, Very good knowledge of Django framework, Experience with relational databases (SQL Server or similar), Experience in designing APIs, Experience working with backend systems, Senior-level experience in commercial projects, Ability to work independently and take ownership of solutions 📃 Skills: Python, Django, SQL, SQLServer, API, Backend, Microservices, CI/CD, DevOps, AI 🏢 Description: Senior Python Developer (Django) 📍 Warszawa | model hybrydowy (3 dni biuro, 2 dni zdalnie) Szukamy doświadczonego Python Developera, który dołączy do zespołu rozwijającego wewnętrzne systemy i usługi biznesowe dla klienta z Polski. Projekt ma komponenty związane z rozwiązaniami AI, więc jeśli interesują Cię takie obszary, będziesz mieć okazję z nimi pracować w praktyce. Zakres obowiązków: rozwój i utrzymanie aplikacji backendowych w Pythonie (Django) projektowanie i optymalizacja rozwiązań opartych o SQL Server integracja oraz rozwój wewnętrznych serwisów i narzędzi współpraca z zespołem produktowym i technicznym dbanie o jakość kodu i dobre praktyki Wymagania: minimum 5 lat doświadczenia komercyjnego w Pythonie bardzo dobra znajomość Pythona i frameworka Django doświadczenie w pracy z relacyjnymi bazami danych (SQL Server lub podobne) umiejętność projektowania API i pracy z systemami backendowymi doświadczenie na poziomie seniora w projektach komercyjnych samodzielność i odpowiedzialność za rozwiązania Mile widziane: doświadczenie z architekturą mikroserwisową znajomość narzędzi DevOps lub CI/CD zainteresowanie lub doświadczenie w projektach AI Oferujemy: stabilną współpracę przy długoterminowym projekcie model hybrydowy (3 dni w biurze w Warszawie) udział w projekcie z elementami AI realny wpływ na rozwój systemów Jeśli chcesz pracować nad rozwiązaniami, które mają realne zastosowanie biznesowe i jednocześnie zahaczają o obszar AI, daj znać.

🏢 Summary: Long-term B2B Python Developer engagement for an international investment-banking project, using a hybrid model with three office days per week. The role requires senior full-stack expertise across Python, front-end applications, back-end APIs, Azure deployments, and data-intensive systems. 🗂️ Requirements: 8+ years of experience, Strong Python development skills, Functional programming, Object-oriented programming, Full-stack development experience, Front-end web application development, Back-end services and API development, Azure cloud services and deployments, Experience with large datasets and data-intensive applications, Strong software engineering fundamentals and best practices 📃 Skills: Python, Azure, APIs, Frontend, Backend 🏢 Description: 📌 We are currently looking for talented and experienced Python Developer to join a long-term project with a major international Swiss investment bank operating in the financial sector. 📍 Location: Krakow 🏢 Hybrid model: 3 days per week from the office Type of contract: B2B Experience: 8+ years Required Experience: Strong Python development skills (functional and object-oriented programming) Full-stack development experience Front-end web application development Back-end services and API development Azure cloud services and deployments Experience with large datasets and data-intensive applications Strong software engineering fundamentals and best practices Additional Note: Profiles combining Python expertise with UI/front-end development experience are particularly desirable. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV at alina.pchelnikova@dcvtechnologies.co.uk