Senior Python Backend Developer – Generative AI Data Integration

🏢 Summary: Senior Python Backend Engineer role focused on building scalable backend services and APIs to power AI-driven investment research platforms for hedge fund clients. The position involves integrating AI/LLM capabilities, ensuring high reliability, compliance, and secure data delivery in production environments. Fully remote within the EU. 🗂️ Requirements: 6+ years professional Python development in production environments, Strong knowledge of REST API design, Strong understanding of backend architecture patterns, Experience delivering production-ready code, Experience troubleshooting live, customer-facing systems, Fluent English, Legal right to work in Europe 📃 Skills: Python, REST, API, AI, LLM, OpenAI, Anthropic, LangChain, Java, Go, Azure, SEC 🏢 Description: Empower the Future of Investment Research — Lead Innovation with Cutting-Edge AI and Backend Solutions! Remote (EU-based) opportunity with full remote work flexibility As a Senior Python Backend Engineer at our client, you will be working for an industry leader revolutionizing investment research through advanced AI-driven infrastructure. You will contribute to building scalable, reliable platform services that support complex AI workflows, expert network management, and data delivery—serving demanding hedge fund clients with strict compliance needs. This role offers a dynamic environment for growth and impactful technological innovation. Your main responsibilities: Design, develop, and maintain robust backend services and APIs in Python to support AI and data pipelines Collaborate with AI/ML teams to integrate language model capabilities into production systems Write well-structured, maintainable, and tested code with a focus on correctness and reliability Troubleshoot and resolve issues impacting live, customer-facing products Contribute to system architecture decisions and participate in code reviews Ensure compliance with SEC regulations and data security standards You're ideal for this role if you have: At least 6 years of professional experience in Python development in production environments Strong knowledge of REST API design and backend architecture patterns Proven experience delivering high-quality, production-ready code Ability to thrive in fast-paced, high-impact settings with live user products It is a strong plus if you have: (optional) Hands-on experience with AI/LLM integrations (OpenAI, Anthropic, LangChain, or similar) Background in statically typed languages such as Java or Go, enhancing AI prompting and system design skills Familiarity with prompt engineering and handling structured LLM outputs Experience working with cloud infrastructure, preferably Azure Language Required for the role: Fluent English Eligibility for the role: Only candidates with an existing legal right to work in Europe 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: 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 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: Senior Python Backend Developer role focused on building scalable, cloud-native backend systems using Python and FastAPI within GCP environments. The position involves designing containerized microservices, contributing to system architecture, and supporting CI/CD processes in a modern cloud ecosystem. Fully remote within Europe with collaboration on high-impact digital transformation projects. 🗂️ Requirements: Minimum 4 years of backend development experience with Python, Strong knowledge of GCP and cloud service architectures, Experience with FastAPI or similar Python frameworks, Experience with containerized environments, Solid understanding of microservices architecture, Experience designing and developing REST APIs, Proficient English (spoken and written), Legal right to work in Europe 📃 Skills: Python, FastAPI, GCP, Containers, Microservices, REST, CICD, React 🏢 Description: Ignite innovation — transform cloud-native backend solutions with Python mastery! Warszawa-based opportunity with remote work model, allowing up to 5 days per week from anywhere in Europe. As a Senior Python Backend Developer – Cloud & Container Experts , you will be working for our client, a leader in cloud computing and containerization technologies. Join a dynamic team dedicated to building scalable, resilient, and cutting-edge backend systems that power modern applications. This role offers a pathway to work on impactful projects at the forefront of digital transformation. Your main responsibilities: Design, develop, and optimize scalable backend services using Python and FastAPI within cloud environments. Implement containerized solutions leveraging Google Cloud Platform (GCP) and modern orchestration tools. Collaborate with cross-functional teams to deliver high-performance software solutions. Ensure code quality, performance, and security standards are maintained. Participate in continuous integration and deployment pipelines to streamline releases. Contribute to system architecture planning and best practices in cloud-native development. Troubleshoot and resolve production issues swiftly and efficiently. You're ideal for this role if you have: At least 4 years of experience in backend development with Python. Strong knowledge of GCP, containers, and cloud service architectures. Experience with FastAPI or similar frameworks. Previous full-stack experience is a plus; familiarity with React is advantageous. Solid understanding of microservices and RESTful API design. Ability to work independently in a remote environment and communicate effectively within international teams. It is a strong plus if you have: (optional) Additional certifications in cloud technologies or container orchestration. Experience with DevOps tools and CI/CD pipelines. Language Required for the role: Proficient command of English (spoken and written). Eligibility for the role: Only candidates with an existing legal right to work in Europe 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: 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: Remote Senior Python AI Developer role focused on building and scaling an AI-driven product platform. The position involves developing backend APIs, AI/ML workflows, document processing, retrieval systems, and integrating structured data into reliable, user-facing features. You will contribute across backend and frontend to deliver explainable, production-ready AI-powered solutions. 🗂️ Requirements: 5+ years professional software engineering experience, Strong experience with Python, Experience building backend APIs, Experience with FastAPI or similar frameworks, Experience with AI/ML product workflows, Experience designing and consuming API contracts and JSON schemas, Experience with asynchronous workflows and background jobs, Experience handling retries, partial failures, and process status, Commercial experience with React, Commercial experience with TypeScript, Experience writing tests for APIs and edge cases, Experience with retrieval systems, embeddings, or LLM APIs 📃 Skills: Python, FastAPI, AI, ML, APIs, JSON, React, TypeScript, LLM, OpenAI, Gemini, Anthropic, Embeddings, Vector, Firebase, Firestore, GCP, CloudRun, CloudSQL, Neo4j 🏢 Description: We are looking for a Senior Python AI Developer to build and scale an AI driven product platform in a fully remote setup. The role focuses on developing reliable product features around AI / ML workflows, document processing, retrieval systems, structured data, and user facing outputs that need to be clear, explainable, and easy to inspect. ✅ Your responsibilities: ・Developing backend APIs in Python with FastAPI , for document upload, asynchronous processing, job status, retries, partial success, and structured results. ・Building product workflows around AI outputs, retrieval systems, document processing, and structured data . ・Connecting backend services, frontend applications, data workflows, and AI generated outputs into a reliable product experience. ・Creating user facing features that make AI outputs easier to inspect through source references, confidence signals, warnings, and clear error states. ・Working with structured data, documents, tables, financial metrics, and normalized evidence flows. ・Contributing to frontend features using React and TypeScript , especially around workflow status, evidence review, recommendations, and decision outputs. ・Writing tests around API contracts, edge cases, error cases, and realistic user workflows. 🧠 Our requirements: ・5+ years of professional software engineering experience. ・Strong experience with Python and backend API development. ・Experience with modern API frameworks, ideally FastAPI or similar. ・Good understanding of AI / ML product workflows or strong interest in building software around AI outputs. ・Experience designing and consuming API contracts, schemas, and structured JSON payloads. ・Comfort with asynchronous workflows, background jobs, retries, partial failures, and user visible process status. ・Commercial experience with modern frontend applications, preferably with React and TypeScript . ・Good testing habits, especially around edge cases, failure cases, and API behavior. ・Experience with AI / ML product workflows, including retrieval systems, embeddings, vector search, LLM based applications, or LLM APIs such as OpenAI, Gemini, Anthropic / Claude. ⭐ Nice to have: ・Experience with data heavy products, including data workflows, document processing, data normalization, or working with structured evidence. ・Experience with cloud and data infrastructure, ideally Firebase, Firestore, Google Cloud Platform, Cloud Run, Cloud SQL, vector search, or Neo4j. 🌟 What we offer: ・100% remote work. ・Opportunity to work on a modern AI / ML product platform. ・Private healthcare and Multisport. ・Life insurance. ・Real influence on technical decisions and architecture. ・Exposure to modern AI, data, and product engineering challenges. ・Collaborative and supportive team environment.

🏢 Summary: Offer for a Senior IT Developer focused on building and maintaining modern Python-based backend systems and APIs, with active involvement in GEN AI and automation projects. The role combines production-grade backend development with integration of AI solutions and LLM-based systems. The position emphasizes high code quality, performance, and collaboration on AI-driven business solutions. 🗂️ Requirements: Strong knowledge of Python, Practical experience with FastAPI, Very good knowledge of SQL, Experience in building production-grade backend solutions, Experience with GEN AI projects, Experience in designing and integrating REST APIs, Knowledge of typed Python and code quality tools, Ability to design agent logic and integrate with LLM APIs, English proficiency 📃 Skills: Python, FastAPI, Pydantic, SQLAlchemy, pandas, aiofiles, aiohttp, SQL, REST, GENAI, LLM, VertexAI, Azure, MSQL, mypy, ruff, uv 🏢 Description: Do naszego zespołu poszukujemy Senior IT Developera , który będzie rozwijać nowoczesne rozwiązania backendowe oraz aktywnie współtworzyć projekty oparte na rozwiązaniach GEN AI i automatyzacje wspierające biznes. Szukamy osoby, która bardzo dobrze zna Python ( FastAPI, Pydantic, sqlalchemy, pandas, aiofiles, aiohttp) i SQL , ma doświadczenie w budowie produkcyjnych rozwiązań oraz potrafi łączyć kompetencje developerskie z praktycznym podejściem do projektów opartych o sztuczną inteligencję. Twoje zadania Rozwój i utrzymanie aplikacji backendowych w Pythonie Projektowanie i rozwój API w FastAPI (aplikacje async, integracje IO-bound) Tworzenie i optymalizacja logiki bazodanowej w SQL Udział w realizacji i rozwoju projektów GEN AI (mile widziane doświadczenie z Vertex AI API / Azure Foundry) Integracja nowych rozwiązań z istniejącymi systemami i procesami Współpraca z biznesem i zespołami technicznymi przy projektowaniu rozwiązań Dbanie o jakość kodu, wydajność i stabilność dostarczanych aplikacji Nasze oczekiwania Bardzo dobra znajomość Python Znajomość narzędzi i praktyk podnoszących jakość kodu: typed Python (type hints, ty, mypy), uv, ruff Praktyczne doświadczenie z FastAPI Bardzo dobra znajomość SQL Doświadczenie w pracy przy projektach opartych na GEN AI (projektowanie logiki agentów, promptów, walidacja wiedzy domenowej, integracja z LLM API, budowanie customowej orkiestracja) Doświadczenie w projektowaniu i integracji REST API Samodzielność, odpowiedzialność i dobre umiejętności komunikacyjne Dobra znajomość języka angielskiego Mile widziane Znajomość MS SQL Doświadczenie z integracjami systemowymi i automatyzacją procesów Znajomość dobrych praktyk w zakresie jakości i bezpieczeństwa oprogramowania To oferujemy Zatrudnienie na podstawie umowy o pracę wraz z pakietem benefitów Szkolenia i programy rozwojowe oraz dostęp do platformy e-learningowej Program onboardingowy (wdrożeniowy) ze wsparciem Buddy’ego Udział w corocznej, ogólnofirmowej imprezie integracyjnej Pracę opartą na skandynawskiej kulturze organizacyjnej Możliwość rozwoju w ramach programu przejść wewnętrznych Benefity Dofinansowanie zajęć sportowych Prywatna opieka medyczna Dofinansowanie nauki języków Dofinansowanie szkoleń i kursów Ubezpieczenie na życie Spotkania integracyjne Siłownia w biurze Firmowa drużyna sportowa Kawa / herbata Parking dla pracowników Dodatkowe świadczenia socjalne Dofinansowanie wypoczynku Paczki świąteczne Program rekomendacji pracowników Inicjatywy dobroczynne Kantyna pracownicza Parking rowerowy Nowoczesne i ergonomiczne biuro Joga w biurze GBS/PABI/810

🏢 Summary: Senior Python API Developer role focused on building and maintaining production-grade FastAPI services for real-time healthcare data integration and processing. The position involves designing scalable backend solutions, integrating multiple healthcare data sources, and ensuring high data quality and security standards. Remote work model with projects centered on impactful healthcare data systems. 🗂️ Requirements: 5+ years Python backend development experience, Proven FastAPI expertise, Strong API design knowledge, Asynchronous programming in Python, Advanced SQL with CTEs and window functions, Experience with large datasets, Integration of multiple data sources, Data validation and transformation experience, Experience with real-time production systems, Understanding of service architecture and scalability, Git-based workflows, Fluent English 📃 Skills: Python, FastAPI, SQL, CTE, APIs, Git, Asynchronous, REST, Authentication, Logging, Monitoring 🏢 Description: Empower healthcare transformation — build innovative APIs that drive data integrity and clinical impact! Warszawa-based opportunity with remote work model (5 days/week) As a Senior Python API Developer – Healthcare Data Integration , you will be working for our client, a leader in healthcare IT, dedicated to advancing patient care through cutting-edge data solutions. You will play a crucial role in designing, developing, and maintaining robust backend services that facilitate seamless healthcare data exchange and analysis, supporting smarter decision-making and improved outcomes. Your main responsibilities: Design, develop, and maintain production-grade APIs in Python, with a focus on FastAPI, to enable real-time healthcare data processing Build backend services that interface live data from multiple internal and external healthcare sources, ensuring reliability and scalability Implement API logic including validation, error handling, authentication, logging, and monitoring to uphold high standards of quality and security Develop asynchronous services and integrations to optimize performance across large, complex datasets Write, optimize, and maintain complex SQL queries supporting operational and analytical reporting Integrate diverse healthcare data sources, including claims, patient records, admissions, discharges, and referrals, into unified API outputs Ensure data consistency, accuracy, and quality through validation, reconciliation, and transformation processes Collaborate with cross-functional teams, including engineers, analysts, and stakeholders, translating requirements into scalable backend solutions Maintain clear technical documentation, API documentation, and developer guides Adopt modern Python and development practices, including Git workflows and code reviews, to contribute to a high-quality engineering environment You're ideal for this role if you have: At least 5 years of professional experience in Python backend or service development Proven expertise in building APIs with FastAPI and solid understanding of API design principles Strong knowledge of asynchronous programming in Python Deep SQL skills, including writing complex queries with CTEs, window functions, and aggregations on large datasets Experience integrating multiple data sources with varying schemas and data quality levels Familiarity with data validation, reconciliation, and transformation in healthcare or related fields Comfortable working with live, real-time operational data in production environments Good understanding of service architecture, backend best practices, and scalable solutions Experience with Git-based collaborative workflows and technical documentation It is a strong plus if you have: Knowledge of healthcare data systems and standards Certifications or experience in data quality, data integration, or related fields Language Required for the role : Fluent in English Eligibility for the role : Not required to have existing legal right to work in the European Union #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. We offer you At ITDS , you will work on innovative and impactful technology projects for international companies across multiple industries in Europe and beyond. We create an environment for ambitious, driven professionals who want to grow, deliver value, and build their careers in modern IT and digital transformation. Our offer includes: Stable and long-term cooperation with attractive conditions Opportunities to develop your technical expertise across various industries and technologies The chance to work on high-impact, strategic IT and digital transformation projects A clear career path and the opportunity to grow quickly by contributing to diverse client initiatives over time International environment , knowledge sharing, social events, and training opportunities Access to an attractive medical package Access to the Multisport program Access to learning platforms such as Pluralsight Flexible working hours and remote work options Ref number 8711

🏢 Summary: Senior Backend Python Engineer role focused on building scalable AI-powered enterprise software and owning backend services from architecture to production. The position involves backend development, distributed systems, cloud infrastructure, and technical leadership in a hybrid B2B environment. Candidates will collaborate across teams to deliver secure, high-performance applications using modern engineering and AI-assisted workflows. 🗂️ Requirements: 6+ years building production-grade backend systems, Strong Python experience, Experience with distributed systems, Knowledge of concurrency and asynchronous processing, Experience designing REST APIs, Experience with scalable architectures, Hands-on cloud platform experience, Database design and performance optimization knowledge, Experience building secure enterprise applications, Ability to own projects from design to deployment, Cross-functional collaboration skills, Strong troubleshooting and problem-solving skills, Excellent English communication skills, Experience with AI tooling and automation workflows 📃 Skills: Python, REST, AWS, GCP, Azure, SQL, TypeScript, LLM, AI, Monitoring, Logging, Observability, Automation 🏢 Description: Senior Backend Engineer (Python) 📍 Warsaw, Poland (Hybrid) ☑️ Full-time 🕦 B2B Contract 💰 $8.000 - $12.000/month We are hiring a Senior Backend Python Engineer for an innovative technology company building AI-powered enterprise software used by organizations worldwide. This role is ideal for an experienced backend engineer who enjoys designing scalable production systems, solving complex technical challenges, and taking ownership of critical backend services from architecture through production. You'll work closely with product, frontend, and platform engineers to build reliable, secure, and high-performance applications while leveraging modern AI-assisted engineering practices . As a Senior Backend Python Engineer you will provide backend development, system design, cloud infrastructure, and technical leadership in a fast-paced engineering environment where ownership and continuous improvement are highly valued. Requirements 6+ years of experience building and maintaining production-grade backend systems Strong hands-on experience with Python and modern backend development practices Strong understanding of distributed systems, concurrency, asynchronous processing, and scalable architectures Experience designing and developing REST APIs and backend services Hands-on experience with cloud platforms such as AWS, GCP, or Azure Strong knowledge of database design, performance optimization, and high-throughput applications Experience building secure, reliable enterprise applications with a security-first mindset Ability to own projects from technical design through deployment and production support Experience working closely with cross-functional engineering and product teams Strong troubleshooting, problem-solving, and communication skills Excellent written and verbal English communication skills Improve engineering leverage with AI tooling , automation, and internal workflows rather than using AI as a gimmick Nice to Have Experience building AI-powered applications, agentic systems, LLM integrations, or orchestration frameworks Experience with TypeScript or full-stack development Experience mentoring engineers or contributing to technical leadership Experience with observability, monitoring, logging, and performance optimization Experience working in fast-growing product or startup environments Responsibilities Design, develop, and maintain scalable backend services, APIs, and asynchronous processing systems Translate business requirements into robust technical solutions and scalable system designs Own services throughout their lifecycle, including deployment, monitoring, reliability, and continuous improvement Design efficient data models and optimize database performance for production workloads Collaborate with product, frontend, and platform teams to deliver end-to-end features Improve engineering productivity through automation and AI-assisted development workflows Participate in architecture discussions, code reviews, and technical decision-making Implement monitoring, logging, and observability solutions to ensure production reliability Continuously improve system scalability, performance, security, and maintainability Contribute to engineering best practices and knowledge sharing across the team