Senior Python Engineer (FinTech Project)

🏢 Summary: Permanent Senior Software Engineer / Senior Python Developer role focused on building and maintaining automated backend and testing solutions within a banking environment. The position centers on developing AI-driven test automation frameworks, optimizing CI/CD pipelines, and ensuring high-quality data processing and integration across financial systems. The role combines backend development, automation, API testing, and collaboration with business stakeholders to deliver scalable credit and financial data solutions. 🗂️ Requirements: Proficiency in Python for backend services and automation, Experience designing automation frameworks, especially Robot Framework, Strong knowledge of CI/CD pipelines and Jenkins, Experience with Git-based workflows and DevOps practices, Solid knowledge of SQL, Experience with Selenium, Experience with Power BI, Ability to write Gherkin scenarios, Experience implementing AI-driven testing solutions, Experience with test management tools such as qTest, Experience in API testing and automated regression testing 📃 Skills: Python, Robot, Jenkins, CI/CD, DevOps, Git, SQL, Selenium, PowerBI, Gherkin, qTest, API, AI 🏢 Description: Detailed description of work task to be carried out Welcome to Group Technology, where we pride ourselves on engineering solutions and direct Bank's transformation by providing a holistic technological view and structured understanding of the bank, and its surrounding environment to enable the Customer Vision and the Business Strategy. We are looking for a Software Engineer/ Senior Python Developer to architect and implement modern backend infrastructure while intentionally designing AI-driven approaches for stable and high-quality software delivery. This is a permanent and full-time position, based in our office in Tricity or Warsaw, Poland. We're not just a bank, we're a tech employer on a mission to evolve finance securely and responsibly. Together, we impact millions of people’s daily lives by ensuring they can access our solutions anytime, anywhere, while safeguarding their personal data and wealth. Join us in making an impact on the banking industry. About our team Meet the Financial Statement team within Rating and Limit Management Unit. Our role is to build and maintain software solutions to store and deliver data across the bank. We support our business partners not only while ensuring regulatory compliance for data quality and audit trail but also integrating financial data with rating and credit decision solution. We work with multiple data sources spanning various formats, systems, and external integrations, requiring sophisticated data orchestration. Join a modern, self-governing team focused on delivering scalable solution for credit part of the bank business. We are delivering the Bank's Service Strategy and we are looking for Senior Software Engineer to address and resolve business’ partners daily problems with end to end solution. We value autonomy, mastery likewise a focus on quality delivery. As a bank, we are changing these days and we are seeking for a Engineer willing to contribute to the journey. Main responsibilities in this role: Developing automation scripts using Robot Framework and Python. Implementing automated solutions for daily data handling tasks and prepare test data Planning and executing tests, alongside analysing test results and reporting defects. Running automated regression tests as part of the CI/CD process while using Jenkins Performing API testing and expand test coverage Optimizing workflows with AI tools to increase efficiency and maintainability of a solution delivered from business demand to working application Partnering with business stakeholders, data users and solution architects while anticipating and addressing business demands This is the right role for you if: ·       Passionate about automation and eager to leverage cutting-edge technologies like AI to transform testing processes ·       Comfortable working independently while collaborating effectively with cross-functional teams including developers and business stakeholders ·       Driven by quality and continuous improvement, always seeking ways to enhance test coverage, reliability, and delivery speed ·       You are fluent with English both written and spoken with proven experience in client-facing roles ·       Excited to work in a dynamic CI/CD environment where your automation expertise directly impacts product quality and release cycles Must-have knowledge and experience Your background and skills include: • Proficiency in Python for reliable, testable services and automation supporting production systems • Experience in designing automation frameworks – Robot framework in particular • Solid understanding of CI/CD pipelines, Jenkins, DevOps including automated build, test, and deployment using Git-based workflows • Established background in SQL, Selenium, Power BI • Hands-on experience in writing Gherkin scenarios • Implementing AI-driven solutions to optimize testing workflows • Experience with test management tools such as qTest • Strong independent work ethic with superior organizational skills Nice-to-have knowledge and experience • Have exposure to data warehouse principles • Have experience with database technologies • Are acquainted with or willing to learn data modeling Location: Gdańsk or Warsaw Hybrid working model: 2 days in the office (3 days from September)

🏢 Summary: Senior Python Engineer role focused on building and scaling a cloud-native real-time Data Platform handling massive datasets. The position involves developing high-performance backend services, optimizing distributed systems, and integrating large-scale data storage solutions. Hybrid work model in Warsaw with employment benefits including private medical care and multisport card. 🗂️ Requirements: 8+ years of backend software development experience, Advanced Python expertise, Experience with scalable production-grade systems, Knowledge of concurrency and multiprocessing, Experience with Pandas or NumPy, Experience with Parquet or JSON data formats, Knowledge of relational and NoSQL databases, Experience with performance optimization and low-latency systems, Ability to use AI-assisted development tools responsibly 📃 Skills: Python, Pandas, NumPy, Parquet, JSON, SQL, NoSQL, API, OOP, Concurrency, Multiprocessing, Algorithms, Databases, Cloud 🏢 Description: For our client, a leading, high-growth global fintech company – we are looking for an experienced Senior Python Engineer to join a key engineering team responsible for the company’s core data foundation. The project focuses on building, optimizing, and scaling a cloud-native, high-throughput Data Platform designed to ingest, process, and distribute massive datasets in real-time. This platform serves as the backbone for various downstream analytical systems, requiring extreme reliability, performance, and scalability. This is a fantastic opportunity for a strong Python generalist who enjoys solving complex distributed system problems, optimizing data flows, and working with modern cloud architectures. Responsibilities Backend & Pipeline Development: Design and develop scalable backend services and high-performance data processing pipelines using Python. Performance Tuning: Identify bottlenecks and optimize system performance, focus on concurrency, throughput, and low-latency execution. Data Integration & Storage: Build robust integrations with modern cloud-native storage solutions and databases to manage large-scale datasets efficiently. Collaborative Engineering: Work closely with cross-functional technical teams to understand data requirements and deliver reliable API services and platform features. Engineering Excellence: Maintain top-tier coding standards, emphasizing clean code, robust testing (unit/integration), automation, and security. Requirements 8+ years of professional backend software development experience (with a strong track record in building scalable, production-grade systems). Deep expertise in Python (advanced OOP, concurrency/multiprocessing, memory management, data structures, and algorithms). Solid experience with data-centric libraries such as Pandas, NumPy, or similar data processing frameworks. Experience with large-scale data storage formats (e.g., Parquet, JSON, or column-oriented databases) and relational/NoSQL databases. AI-assisted development mindset: Comfortable utilizing AI tools  to accelerate delivery, while maintaining strong developer judgment regarding validation, testing, security, and refactoring. What our client offers: Hybrid work model in Warsaw (minimum 3 days a week in the office - strictly non-negotiable). Contract of Employment (UoP) with increased tax-deductible costs (KUP). Private medical care (including full dental care). Lunch card to cover your daily meals. Multisport card.

🏢 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: Senior Python Developer role focused on building and scaling the back-end of an AI-driven quantitative investment platform using FastAPI and AWS. The position involves developing secure, high-performance RESTful services and contributing to a full-stack AI-native feature team. The goal is to deliver a robust, scalable system supporting intelligent and transparent investment solutions. 🗂️ Requirements: Bachelor’s degree in Computer Science, Engineering or related field or equivalent experience, 3+ years of back-end development experience, Proven experience with Python, Commercial experience with FastAPI, Experience building RESTful APIs, Strong knowledge of server-side architecture, Experience with database management, Hands-on experience with AWS, Knowledge of security and data protection practices, Experience with Git 📃 Skills: Python, FastAPI, AWS, REST, API, Git, SQL, GenAI 🏢 Description: We are looking for a dynamic, hands-on Senior Python Developer to join a full-stack AI native feature team for building a cutting-edge quantitative investment platform. The project aims to deliver a groundbreaking, AI-driven investment ecosystem that revolutionizes the entire investment process through an intuitive and human-centric design approach. This initiative transcends mere digitization, aiming to redefine investment decision-making with systematic, transparent and intelligent solutions. The platform is designed with the versatility to cater to a wide array of users and offers transformative capabilities for the investment landscape. Responsibilities Design, develop, and maintain robust and scalable back-end systems using FastAPI and Python Implement security and data protection measures to ensure the integrity and confidentiality of data Optimize applications for maximum speed and scalability Develop and maintain RESTful APIs for seamless communication between different components of the application Conduct code reviews and provide mentorship to ensure code quality and adherence to best practices Troubleshoot and resolve complex technical issues and bugs in a timely manner Stay up-to-date with the latest industry trends and technologies to continuously improve development processes and system performance Requirements Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience 3+ years of proven experience as a Back-End Developer with a focus on FastAPI and Python Strong understanding of server-side logic and database management Expertise in Amazon Web Services Knowledge of FastAPI and REST API Background in Gen AI Assisted Development Familiarity with version control systems such as Git Excellent problem-solving skills and attention to detail Strong communication and collaboration skills Ability to work independently and as part of a team in a fast-paced environment B1+ English level proficiency Nice to have Skills in Cursor Proficiency in ReactJS We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Hands-on Senior Python Developer role focused on modernizing and refactoring legacy systems using modern Python frameworks and SQLAlchemy, with support from AI-assisted development tools. The position involves improving code quality, scalability, and reliability in a regulated environment while contributing to long-term architectural enhancements. 🗂️ Requirements: 10+ years of professional Python development experience, Proven experience modernizing and migrating legacy systems, Strong knowledge of SQLAlchemy and complex data models, Experience using AI tools for code refactoring or analysis, Understanding of code quality standards in regulated industries, Ability to design scalable and maintainable architectures, Hands-on experience working directly with legacy codebases 📃 Skills: Python, SQLAlchemy, SQL, AI, Architecture, Refactoring, Debugging 🏢 Description: We are looking for a highly experienced Senior Python Developer with a strong track record of modernizing legacy systems. This is a hands‑on engineering role for someone who excels at solving complex technical problems and improving existing codebases. Tasks Modernize and refactor legacy applications using Python, modern Python web frameworks, and SQLAlchemy. Apply AI‑assisted development tools to analyze and refactor legacy code. Improve code quality, maintainability, and system reliability in a regulated environment. Contribute to scalable architecture design and long‑term technical improvements. Drive continuous enhancement of our technology infrastructure. Work directly in the codebase—debugging, refactoring, implementing, and delivering. Expectations 10+ years of professional Python development experience. Proven experience modernizing legacy systems and migrating them to modern architectures. Strong SQLAlchemy knowledge and experience with complex data models. Practical experience using AI tools to support code refactoring or analysis. Solid understanding of code quality standards in regulated industries; Pharma compliance experience is a plus. Ability to design scalable, maintainable solutions. Hands‑on mindset—comfortable working directly with legacy code. 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.

🏢 Summary: Senior Python Developer role in a full-stack AI-native team building an advanced quantitative investment platform. The position focuses on designing and developing scalable back-end systems using FastAPI and Python, with strong emphasis on security, performance, and AWS-based infrastructure. The project delivers an AI-driven investment ecosystem aimed at transforming decision-making through systematic and intelligent solutions. 🗂️ Requirements: Bachelor's degree in Computer Science, Engineering or related field or equivalent experience, 3+ years of back-end development experience with Python, Commercial experience with FastAPI, Strong knowledge of server-side logic, Experience with database management, Expertise in AWS, Experience building REST APIs, Experience with Git, B1+ English proficiency 📃 Skills: Python, FastAPI, AWS, REST, Git, SQL, GenAI, ReactJS, Cursor 🏢 Description: We are looking for a dynamic, hands-on Senior Python Developer to join a full-stack AI native feature team for building a cutting-edge quantitative investment platform. The project aims to deliver a groundbreaking, AI-driven investment ecosystem that revolutionizes the entire investment process through an intuitive and human-centric design approach. This initiative transcends mere digitization, aiming to redefine investment decision-making with systematic, transparent and intelligent solutions. The platform is designed with the versatility to cater to a wide array of users and offers transformative capabilities for the investment landscape. Responsibilities Design, develop, and maintain robust and scalable back-end systems using FastAPI and Python Implement security and data protection measures to ensure the integrity and confidentiality of data Optimize applications for maximum speed and scalability Develop and maintain RESTful APIs for seamless communication between different components of the application Conduct code reviews and provide mentorship to ensure code quality and adherence to best practices Troubleshoot and resolve complex technical issues and bugs in a timely manner Stay up-to-date with the latest industry trends and technologies to continuously improve development processes and system performance Requirements Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience 3+ years of proven experience as a Back-End Developer with a focus on FastAPI and Python Strong understanding of server-side logic and database management Expertise in Amazon Web Services Knowledge of FastAPI and REST API Background in Gen AI Assisted Development Familiarity with version control systems such as Git Excellent problem-solving skills and attention to detail Strong communication and collaboration skills Ability to work independently and as part of a team in a fast-paced environment B1+ English level proficiency Nice to have Skills in Cursor Proficiency in ReactJS We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Senior Python Developer role within an AI-native full-stack team building a cutting-edge quantitative investment platform. The position focuses on developing scalable back-end systems and RESTful APIs using FastAPI and Python, ensuring security, performance, and cloud integration. The project delivers an AI-driven, human-centric investment ecosystem transforming decision-making processes. 🗂️ Requirements: Bachelor's degree in Computer Science, Engineering or related field or equivalent experience, 3+ years of back-end development experience with FastAPI and Python, Strong knowledge of server-side logic and database management, Expertise in Amazon Web Services, Experience with FastAPI and REST API development, Background in Gen AI assisted development, Proficiency with Git or other version control systems, B1+ English proficiency 📃 Skills: Python, FastAPI, REST, AWS, Git, GenAI, Databases 🏢 Description: We are looking for a dynamic, hands-on Senior Python Developer to join a full-stack AI native feature team for building a cutting-edge quantitative investment platform. The project aims to deliver a groundbreaking, AI-driven investment ecosystem that revolutionizes the entire investment process through an intuitive and human-centric design approach. This initiative transcends mere digitization, aiming to redefine investment decision-making with systematic, transparent and intelligent solutions. The platform is designed with the versatility to cater to a wide array of users and offers transformative capabilities for the investment landscape. Responsibilities Design, develop, and maintain robust and scalable back-end systems using FastAPI and Python Implement security and data protection measures to ensure the integrity and confidentiality of data Optimize applications for maximum speed and scalability Develop and maintain RESTful APIs for seamless communication between different components of the application Conduct code reviews and provide mentorship to ensure code quality and adherence to best practices Troubleshoot and resolve complex technical issues and bugs in a timely manner Stay up-to-date with the latest industry trends and technologies to continuously improve development processes and system performance Requirements Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience 3+ years of proven experience as a Back-End Developer with a focus on FastAPI and Python Strong understanding of server-side logic and database management Expertise in Amazon Web Services Knowledge of FastAPI and REST API Background in Gen AI Assisted Development Familiarity with version control systems such as Git Excellent problem-solving skills and attention to detail Strong communication and collaboration skills Ability to work independently and as part of a team in a fast-paced environment B1+ English level proficiency Nice to have Skills in Cursor Proficiency in ReactJS We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Senior Python Developer role in a startup-like environment focused on designing and delivering high-performance, scalable systems for demanding clients. The position involves full ownership of features from architecture to deployment, solving complex engineering problems, and shaping technical direction. It requires working under pressure with rapidly changing priorities while ensuring code quality and system reliability. 🗂️ Requirements: 5+ years commercial software development experience, Strong professional experience with Python, Excellent knowledge of Python 3.11+, Production experience with FastAPI or Falcon and Async SQLAlchemy 2.0, Strong expertise in REST and GraphQL API design, Solid understanding of relational and non-relational databases, Advanced knowledge of OOP, SOLID, YAGNI, TDD, Extensive experience with pytest, CI/CD pipelines, Docker, deployments, Experience building scalable, low-latency systems, Very good written and spoken English 📃 Skills: Python, FastAPI, Falcon, SQLAlchemy, REST, GraphQL, PostgreSQL, MongoDB, Redis, Elasticsearch, pytest, Docker, CI/CD, AWS, Azure, OOP, SOLID, TDD 🏢 Description: Startup Environment, High Ownership, Demanding Clients Join our startup-like environment filled with new ideas, rapid change, and a strong focus on priorities and delivery. We are looking for a Senior Python Developer - someone experienced, open-minded, and ready to take real ownership of both product and technical direction. You will work closely with demanding clients , solve complex engineering problems, and help shape ambitious, high-performance systems. This role is for engineers who enjoy responsibility, fast feedback loops, architectural challenges, and working under pressure . Your primary responsibilities beyond the will to change the world: Act as a technical partner for clients : analyze business needs, challenge requirements, and propose effective, scalable solutions Take full ownership of complex features - from concept and architecture through implementation, testing, and automated deployment Design system architecture, APIs, and data models for high-load, data-intensive systems Deliver core and business-critical components of projects Work in a dynamic, startup-style environment with changing priorities, tight deadlines, and real product pressure Proactively identify risks, bottlenecks, and technical debt , and drive improvements Ensure high code quality, performance, and reliability Support and mentor other developers, helping raise engineering standards across teams Must have: 5+ years of commercial software development experience, including strong professional experience in Python Excellent knowledge of Python 3.11+ (typing, dataclasses, modern best practices) Production experience with modern Python frameworks ( async FastAPI preferred, Falcon welcome, Async SQLAlchemy 2.0 ) Strong expertise in API design (REST, GraphQL) Solid understanding of databases and data-driven systems (relational, document, search, key-value stores) Advanced knowledge of software engineering principles (OOP, SOLID, YAGNI, TDD) Extensive experience with unit testing (pytest), CI/CD pipelines, Docker, and deployments Proven ability to build efficient, low-latency, scalable systems Confidence working with tight deadlines, pressure, and frequently evolving requirements Very good written and spoken English Strong communication skills and a proactive, ownership-oriented mindset Experience we'd appreciate, too: Experience in system architecture and technical leadership Asynchronous programming and high-concurrency systems Messaging systems and distributed architectures DDD and event-driven design Cloud and DevOps experience ( AWS / Azure ) Mentoring and influencing technical direction of projects Nice to have: Community involvement (meetups, open source, speaking) Writing technical articles or internal knowledge-sharing A list of benefits is long so we will mention only about the crucial ones: Challenging projects with real business impact Work in a startup-like environment : fast decisions, autonomy, responsibility 100% remote or office in Poland (Wrocław / Zielona Góra) Sport subscription Private healthcare

🏢 Summary: Hybrid Senior Python Developer role for a financial sector client focused on transaction processing, risk analysis, and financial data platforms. The position involves building scalable full-stack applications, backend APIs, and cloud-based solutions on Azure for banking and investment systems. The role includes working with large datasets, optimizing performance, and maintaining secure, high-quality software. 🗂️ Requirements: Strong Python proficiency, Experience with functional programming, Experience with object-oriented programming, Experience in full-stack development, Frontend web application development, Backend services and API development, Hands-on experience with Azure, Deployment of web applications and services, Experience with large datasets, Understanding of software engineering principles, Understanding of software engineering best practices 📃 Skills: Python, Azure, API, Frontend, Backend, FastAPI, Flask, Docker, Kubernetes, CI/CD, AzureDevOps 🏢 Description: Work mode: Hybrid job 3 days/week from Krakow or Wroclaw About the project We are looking for a Senior Python Developer for our client from the financial sector – a company operating in the area of transaction processing, risk analysis, and financial data platforms. You will join a team building scalable, secure, and data-intensive applications for the banking and investment domain. Must Have (Required Skills & Experience) Technical Skills Strong proficiency in Python (functional and object-oriented programming) Experience in full-stack development: Frontend web applications Backend services / APIs Hands-on experience with Azure cloud platform: Deployment of web apps and services Experience working with large datasets and data-heavy applications Strong understanding of software engineering principles and best practices Responsibilities Design, develop, and maintain full-stack applications for financial data processing and visualization Build robust backend services and APIs Deploy and manage applications on Azure Optimize performance for large-scale data workloads Ensure code quality, security, and maintainability Nice to Have Experience with FastAPI / Flask Knowledge of Docker and Kubernetes Familiarity with financial instruments or banking systems Experience with CI/CD pipelines (Azure DevOps)

🏢 Summary: The offer is for a senior Python Developer role focused on building and optimizing trading systems, data pipelines, and analytical tools that enhance execution performance and market insights. The position centers on integrating with trading infrastructure, analyzing large-scale market data, and improving latency, fill rates, and execution quality. It involves close collaboration with research and infrastructure teams to deliver robust, real-time trading solutions. 🗂️ Requirements: Bachelor’s or advanced degree in Computer Science, Engineering, Mathematics, or related quantitative field, 7+ years of professional Python development experience, Experience building libraries, data platforms, or analytical tools, Experience with large-scale and time series datasets, Strong SQL knowledge and experience with analytical databases, Experience working in Linux environments, Knowledge of software engineering best practices (testing, version control, CI), Knowledge of financial markets and electronic trading, Ability to design and maintain real-time data pipelines and monitoring systems 📃 Skills: Python, SQL, NumPy, Pandas, Linux, Git, CI, C, C++, Rust 🏢 Description: 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.