Senior Python Developer

🏢 Summary: Backend Developer role focused on building and evolving a large-scale platform using Domain-Driven Design and Clean Architecture. The position involves designing business logic, creating secure REST APIs and WebSocket services, and working with event-driven architectures over Kafka. You will contribute to a complex production system using modern Python practices and AI-assisted development tools. 🗂️ Requirements: 3–5 years commercial experience with Python (3.10+), Production experience with FastAPI, Django, or Flask, Strong knowledge of design patterns and maintainable, testable code principles, Habitual use of fully type-hinted Python, Experience building secure REST APIs and knowledge of OWASP Top 10, Production experience with one relational and one NoSQL database, Experience with asynchronous or concurrent programming, Production experience with message queue or streaming platform, Proficiency with Docker and docker-compose, Experience using AI coding assistants in daily development 📃 Skills: Python, FastAPI, Django, Flask, Kafka, RabbitMQ, SQS, Celery, Redis, MongoDB, DynamoDB, SQL, Docker, asyncio, REST, WebSocket, OWASP, GitHubCopilot 🏢 Description: Exciting projects. Great atmosphere. Personal growth. Merixstudio. What you'll do We are looking for a collaborative developer who deeply cares about architecture, maintainability, and security. You’ll join our experienced team on a large, established backend platform built with Domain-Driven Design, Clean Architecture, and event-driven workflows over Kafka. In this role, you will design business logic, build modern REST APIs and WebSocket services, and leverage AI-assisted development tools to deliver real business value. Navigating a complex, existing system is an exciting growth opportunity for you, and you’ll expand your skills through direct mentorship from senior engineers and robust code reviews. Who you are (requirements) You have 3–5 years of commercial experience in developing web applications using Python (3.10+). Proficiency and production experience with at least one Python framework (FastAPI, Django, or Flask). You are familiar with design patterns and principles of delivering high-quality, maintainable, and testable code. You write fully type-hinted Python as a matter of habit and respect existing patterns over personal preference in codebases with explicit layer separation. You know how to build modern, secure, and efficient APIs and you are aware of common web security pitfalls (OWASP Top 10). Production experience and knowledge of at least one relational and one non-relational/NoSQL database (MongoDB, DynamoDB, Redis, etc.). Comfortable with concurrent or asynchronous programming concepts (task queues, async/await) and possess production experience with at least one message queue or streaming platform (Kafka, RabbitMQ, SQS, Celery, Redis Streams, etc.). You are proficient with Docker and docker-compose. AI-Assisted Development: You work effectively and are comfortable using AI coding assistants (GitHub Copilot, Cursor, Windsurf, Claude Code, etc.) as part of daily development. You are fluent in both spoken and written English and Polish. What we'd like to see: Production experience with FastAPI specifically, as well as production async Python experience (asyncio, async/await, async testing). Exposure to Domain-Driven Design (DDD) or Clean Architecture in a previous role. Experience with MongoDB schema design and aggregation pipelines, as well as production experience with Kafka or another streaming platform. Strong ability to write unit and integration tests (including when behavior spans services or storage), debug applications, and familiarity with CI/CD pipelines. Knowledge of AWS services (EC2, ECS, S3, SQS, Lambda). Experience with WebSocket-based real-time systems. Experience giving constructive code review feedback to help the team grow. Additionals: one-time home office bonus - 1000 PLN net free medical care flexible working hours 100% remote work or hybrid model: if you want, we have a great office in Poznań!

🏢 Summary: The offer is for a Senior Python Developer to design and build a scalable, high-performance backend platform supporting real-time communication and coordination of thousands of autonomous units. The role focuses on mission-critical systems, real-time telemetry processing, and high-availability architecture in a fully remote, international environment. The position involves strong influence on system architecture and technical decisions. 🗂️ Requirements: Minimum 5+ years of experience as a Python Developer, Strong knowledge of Python and backend service development, Hands-on experience with Flask or FastAPI or aiohttp, Practical experience with real-time data processing systems, Experience with message queues such as RabbitMQ or ZeroMQ, Experience with PostgreSQL or MySQL or MariaDB, Ability to design high-load, high-availability systems, Very good command of English (C1) 📃 Skills: Python, Flask, FastAPI, aiohttp, RabbitMQ, ZeroMQ, PostgreSQL, MySQL, MariaDB, APIs, Telemetry, Jira 🏢 Description: Our Client is a fast-growing technology company building advanced solutions in the field of autonomy and distributed systems, operating in a fully international environment. The project focuses on developing a scalable backend platform that supports thousands of autonomous units operating and communicating in real time. We are looking for an experienced Python Developers who want to have a real impact on the architecture of mission-critical systems and work on products where performance, reliability, and fast engineering decisions truly matter. WORK MODE: 100% remote - occasional visits to Warsaw (mokotów) WHAT WILL YOU BE WORKING ON? Designing, implementing, and developing scalable backend services in Python , handling real-time telemetry data processing (thousands of events per second) Co-designing the architecture of high-availability, high-performance systems responsible for coordination, analysis, and real-time data distribution Building and maintaining data pipelines (telemetry, sensor data, mission-critical events) using message queues and asynchronous mechanisms Designing and implementing APIs consumed by frontend applications, internal tools, and other platform components Working closely with backend, frontend, and autonomy/algorithm teams to ensure seamless system integration Participating in architectural design, code reviews, ensuring code quality, monitoring, and maintaining clear technical documentation WHAT DO WE EXPECT FROM YOU? Must-have: Minimum 5+ years of experience as a Python Developer Strong knowledge of Python and backend service development Hands-on experience with web frameworks such as Flask , FastAPI or aiohttp Practical experience with real-time data processing systems (must have) and message queues (e.g. RabbitMQ , ZeroMQ , or similar) Experience working with databases such as PostgreSQL , MySQL , or MariaDB Ability to design systems handling a high volume of requests and events per second Very good command of English (C1) Nice-to-have: Experience with Go Knowledge of distributed systems, data streaming, or event-driven architecture Background in building mission-critical systems (high availability, real-time processing) WHY IS IT WORTH IT? Permanent employment with end client with competitive compensation aligned with your experience Real influence on system architecture and product direction in a high-responsibility, large-scale project Work in an international team focused on outcomes rather than unnecessary processes 100% remote work and a flexible approach to work organization Paid time off and stable cooperation conditions 2-week sprints, Jira , clear goals, and fast feedback loops A work culture built on quality, ownership, and true partnership Thank you for all applications! We will contact selected candidates. TQLO Sp. z o.o. – Agencja Zatrudnienia (KRAZ nr 33580)

🏢 Summary: Remote Senior Python Developer role focused on building and scaling a high-performance backend platform for real-time coordination of thousands of autonomous units. The position involves designing scalable services, processing high-volume telemetry data, and co-creating high-availability system architecture. The role emphasizes performance, reliability, and real impact on mission-critical distributed systems. 🗂️ Requirements: 5+ years of experience as a Python Developer, Strong knowledge of Python and backend service development, Experience with Flask or FastAPI or aiohttp, Hands-on experience with real-time data processing systems, Experience with message queues (e.g. RabbitMQ or ZeroMQ), Experience with PostgreSQL or MySQL or MariaDB, Ability to design high-availability systems handling high volumes of requests and events, Very good command of English (C1) 📃 Skills: Python, Flask, FastAPI, aiohttp, RabbitMQ, ZeroMQ, PostgreSQL, MySQL, MariaDB, APIs, Telemetry, Asyncio 🏢 Description: Our Client is a fast-growing technology company building advanced solutions in the field of autonomy and distributed systems, operating in a fully international environment. The project focuses on developing a scalable backend platform that supports thousands of autonomous units operating and communicating in real time. We are looking for an experienced Python Developers who want to have a real impact on the architecture of mission-critical systems and work on products where performance, reliability, and fast engineering decisions truly matter. WORK MODE: 100% remote - occasional visits to Warsaw (mokotów) WHAT WILL YOU BE WORKING ON? Designing, implementing, and developing scalable backend services in Python , handling real-time telemetry data processing (thousands of events per second) Co-designing the architecture of high-availability, high-performance systems responsible for coordination, analysis, and real-time data distribution Building and maintaining data pipelines (telemetry, sensor data, mission-critical events) using message queues and asynchronous mechanisms Designing and implementing APIs consumed by frontend applications, internal tools, and other platform components Working closely with backend, frontend, and autonomy/algorithm teams to ensure seamless system integration Participating in architectural design, code reviews, ensuring code quality, monitoring, and maintaining clear technical documentation WHAT DO WE EXPECT FROM YOU? Must-have: Minimum 5+ years of experience as a Python Developer Strong knowledge of Python and backend service development Hands-on experience with web frameworks such as Flask , FastAPI or aiohttp Practical experience with real-time data processing systems (must have) and message queues (e.g. RabbitMQ , ZeroMQ , or similar) Experience working with databases such as PostgreSQL , MySQL , or MariaDB Ability to design systems handling a high volume of requests and events per second Very good command of English (C1) Nice-to-have: Experience with Go Knowledge of distributed systems, data streaming, or event-driven architecture Background in building mission-critical systems (high availability, real-time processing) WHY IS IT WORTH IT? Permanent employment with end client with competitive compensation aligned with your experience Real influence on system architecture and product direction in a high-responsibility, large-scale project Work in an international team focused on outcomes rather than unnecessary processes 100% remote work and a flexible approach to work organization Paid time off and stable cooperation conditions 2-week sprints, Jira , clear goals, and fast feedback loops A work culture built on quality, ownership, and true partnership Thank you for all applications! We will contact selected candidates. TQLO Sp. z o.o. – Agencja Zatrudnienia (KRAZ nr 33580)

🏢 Summary: The offer is for a Python Backend Engineer to build and maintain scalable backend services and REST APIs in a collaborative product environment. The role focuses on developing clean, well-tested code and contributing to architecture and code quality from day one. It is a fully remote position with flexible contract options and long-term international projects. 🗂️ Requirements: 3+ years of professional Python experience, Strong knowledge of FastAPI, Django, or Flask, Experience with PostgreSQL, Experience with REST API design, Proficiency with Git, Experience with pytest, Experience with CI/CD workflows 📃 Skills: Python, FastAPI, Django, Flask, PostgreSQL, REST, Git, pytest, CI/CD, AWS, GCP, Azure, Docker, Kubernetes, Kafka, Redis, RabbitMQ, Poetry, uv 🏢 Description: About the role We're looking for a Python backend engineer to join a client team and build reliable, scalable services from day one. Responsibilities Design and maintain Python-based backend services and REST APIs Write clean, tested, well-documented code Collaborate with product and DevOps teams on feature delivery Participate in code reviews and architecture discussions Requirements 3+ years of professional Python experience Solid knowledge of FastAPI, Django, or Flask Experience with PostgreSQL and RESTful API design Comfortable with Git, pytest, and CI/CD workflows Good written and spoken English Nice to have AWS, GCP, or Azure Docker / Kubernetes Kafka, Redis, or RabbitMQ Poetry or uv for dependency management pre-commit hooks and code quality tooling We offer B2B contract or employment contract (umowa o pracę / umowa zlecenie) — flexible on the form Fully remote, flexible setup Long-term engagements with international clients Dedicated recruiter support through onboarding

🏢 Summary: Senior Python Engineer role focused on building and enhancing scalable financial systems using Python and React within AWS cloud environments. The position combines backend and frontend development with system design, cloud integration, and test automation in high-stakes investment and treasury platforms. The role involves leading architectural decisions and refactoring initiatives in agile, distributed teams. 🗂️ Requirements: 5+ years experience with Python including FastAPI and Django, 5+ years experience with React.js and TypeScript, Strong experience with PostgreSQL and Docker, Hands-on experience with AWS cloud services, Strong commitment to test automation including unit and integration testing, Experience with microservices architecture and API design, Experience with database modeling, Experience leading refactoring of critical systems, Ability to design resilient and compliant systems, Experience working in agile teams on complex applications 📃 Skills: Python, FastAPI, Django, PostgreSQL, Docker, React, TypeScript, AWS, S3, Lambda, AKS, CloudWatch, Microservices, REST, APIs, GitHubActions, Jira, Confluence 🏢 Description: We are seeking a skilled Senior Python Engineer with experience in AWS and React to join a project for our Client, a global leader in the area of investments. Responsibilities Develop, maintain, and enhance backend services using Python frameworks (FastAPI, Django), PostgreSQL, and Docker Build and optimize frontend applications with React.js and TypeScript, ensuring seamless user experiences Champion test automation practices, implementing robust unit tests and manual integration testing to ensure code quality and reliability Collaborate within agile teams to deliver complex, high-stakes applications, contributing to iterative development and continuous improvement Participate actively in code reviews, fostering a culture of peer learning and knowledge sharing Work effectively with distributed teams across multiple time zones, ensuring clear communication and collaboration Utilize Atlassian tools (Jira, Confluence, etc.) for project tracking, documentation, and workflow management Integrate and manage native cloud services such as S3 buckets, Lambda, AWS AKS, CloudWatch to support scalable and resilient architectures Lead system design efforts, including microservices architecture, database modelling, and API design, to meet business and technical requirements Drive refactoring and redesign initiatives for critical financial systems, ensuring performance, maintainability, and scalability Architect solutions for resiliency, compliance, and auditability, specifically within Treasury and payment platforms Requirements 5+ years’ experience with Python (FastAPI, Django), PostgreSQL, Docker 5+ years’ experience with React.js, TypeScript Strong commitment to test automation, including robust unit and manual integration testing Experience working in agile teams on complex, high-stakes applications Collaborative mindset, with a commitment to code reviews and peer learning Comfortable working with teams across the globe Familiarity with Atlassian tools (Jira, Confluence, etc.) Familiarity with native cloud services (S3 buckets, Lambda, AWS AKS, CloudWatch) System design expertise across microservices, database modeling, and API design Experience leading refactoring/redesign initiatives on critical financial systems Ability to architect for resiliency, compliance, and auditability in Treasury/payment platforms Nice to have Experience with GitHub Actions, Jira - GitHub integrations, DevOps best practices Prior exposure to financial services, with domain knowledge in payments, wire transfers, account reconciliations, and cash management 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: The offer is for an experienced Python Developer to lead and contribute to backend projects in autonomous agile teams, with responsibility for architecture, development, and delivery of scalable systems. The role involves designing and implementing REST APIs, microservices, and data communication layers while mentoring others and ensuring high code quality. Work can be done remotely or from the office, with strong ownership of the technical direction of projects. 🗂️ Requirements: Strong knowledge of Python, Experience with Django framework, Experience with FastAPI, Proficiency with Git, Experience working with Linux/Unix systems, Experience with relational databases, Knowledge of PostgreSQL or SQLite, Ability to design and develop REST APIs, Experience with microservices architecture 📃 Skills: Python, Django, FastAPI, Git, Linux, Unix, PostgreSQL, SQLite, REST, Microservices, Celery, Redis, RabbitMQ, Docker, JWT, Flask, Pytest, unittest, FactoryBoy, Azure, GCP 🏢 Description: The Future Mind team is looking for a skilful and experienced Python Developer to join us in Warsaw, Tychy, or fully remotely. If you are an independent, reliable software engineer, ready to lead project teams with hands-on involvement, meet business requirements, and take responsibility for the finished product, keep reading, and take part in our quick and remote hiring process . We have received several Mobile Trends Awards for delivering some of the best mCommerce applications in Poland. Our Hebe app is the highest-rated retail mobile app on Google Play more than a year after launch (as of November 2021). Future Mind software engineers work on projects ranging from IoT experiments with large retail corporations to promising VR startups. Our tech stack includes mostly native mobile technologies, Python, Node.js, React, and Angular. We work for companies such as Virgin, EY, Żabka, Hebe, LPP (Sinsay, Reserved), Morizon, EcoCar, Livespace, Empik, Packhelp, and others. We value proactive professionals who enjoy solving problems, sharing knowledge, and being a part of the team. Are you ready to join the only company you'll never want to leave? Take a look at the list of requirements and if you think you have what it takes, let's talk! This job is all about: leading and working in autonomous, agile teams on ambitious, end-to-end projects, taking initiative and responsibility for the technical side of your projects, taking part in project analysis and architecture design, developing back-end systems, implementing logical layers, and creating sources of data communication, using REST API, microservices, queues etc., modifying and developing existing systems (less frequently), testing and improving our products to achieve better performance, mentoring less experienced colleagues, preparing project documentation. What we're looking for: knowledge of Python, Django, FastAPI, Git, Linux/Unix systems and relational databases, like PostgreSQL, SQLite, creativity — we do not want you to do your job uncritically — you can always have a better idea, attention to details, consistency, determination, and accuracy — it's ok to make mistakes, but make sure you learn from them, good communication skills — we want you to interact with the people we work with. Here is some of the tech you can come across when working on our projects , you don't have to know it all: Python, Django, Django Rest Framework, Celery, Postgres, Redis, RabbitMQ, Docker, docker-compose JWT, Flask/FastAPI, REST, unittest / Pytest, FactoryBoy, Azure, GCP, and other clouds. We also appreciate: good command of English — you may be asked to participate in meetings with our clients, knowledge of other frameworks (e.g. FastAPI) could be an advantage, but Django is our choice most of the time, experience gained while working on your own ideas or from involvement in open source projects, taking part in conferences, meetups and sharing knowledge, knowledge of Agile methodologies and tools supporting project work e.g. Basecamp, Jira. ...and here's what we have to offer: non-corporate, transparent work environment, where everyone has their say, frequently reviewed salary relevant to market rates, your skills, and the results you achieve, possibility to significantly impact your projects — you are the team leader and your input has real value, continuous professional development and application of new technologies — we all keep learning, financial support for professional development, when you want to learn, take part in a conference, or go to a meetup, work-life balance, flexible working hours, the ability to work fully or partially remotely, or check in to one of our offices whenever you like, fully paid private health insurance, subsidized sports membership, and language courses, free breakfast, snacks, and drinks at the office, along with a chill-out space, a foosball table, and some gaming gear for when you need to relax and charge your batteries.

🏢 Summary: The offer is for a Senior Python Backend Engineer to design and maintain scalable, cloud-native backend systems on AWS, including REST APIs and AI/LLM integrations. The role focuses on distributed systems, asynchronous processing, observability, and high code quality within a modern CI/CD environment. It involves working with both serverless and containerized deployments in a collaborative, agile team. 🗂️ Requirements: 3–5+ years of professional Python backend development experience, Experience building cloud-native systems on AWS, Strong knowledge of REST API design and OpenAPI, Experience with asynchronous processing and queue-based architectures, Hands-on experience with core AWS services (Lambda, API Gateway, S3, IAM, ECS/EKS, CloudWatch), Knowledge of DynamoDB and NoSQL data modelling, Knowledge of PostgreSQL, SQL, and relational data modelling, Experience with serverless and containerized deployments, Experience integrating external APIs and third-party services, Experience with automated testing using pytest, Familiarity with CI/CD tools, Understanding of distributed systems, scalability, and reliability, Practical understanding of LLM-based or AI-driven applications, Ability to apply SOLID principles and clean code practices, Fluent English (written and spoken) 📃 Skills: Python, AWS, FastAPI, Pydantic, SQLAlchemy, boto3, REST, OpenAPI, Celery, SQS, Lambda, ECS, EKS, S3, CloudFront, IAM, SecretsManager, CloudWatch, DynamoDB, PostgreSQL, SQL, pytest, GitHubActions, Jenkins, NewRelic, Docker, Kubernetes, LLM, Cursor, Claude, Copilot 🏢 Description: We are looking for a Senior Python Backend Engineer with experience in building cloud-native backend systems on AWS. This role is focused on designing, developing, and maintaining scalable Python services, integrating AI/LLM-based capabilities, working with distributed systems, and ensuring high reliability, observability, and code quality. Your responsibilities: Design, build, and maintain backend services using Python in an AWS-based environment. Develop and maintain REST APIs together with clear OpenAPI documentation. Implement asynchronous processing and queue-based communication between services. Design data access patterns for application features using NoSQL and SQL storage. Integrate backend services with internal systems, external APIs, and AI/LLM-based components. Implement reliable communication patterns, including retries, timeouts, and circuit breakers. Build and maintain operational CLI tooling for day-to-day platform tasks (e.g. content ingestion). Contribute to architectural decisions across software and infrastructure as the stack evolves. Create observability for distributed systems, including logging, metrics, tracing, and alerting. Write automated tests and support high code quality across the backend codebase. Contribute to CI/CD processes and deployment automation. Collaborate with product, frontend, QA, DevOps, AI/ML teams, and content creators. Review code, share knowledge, and raise the bar for engineering practice across the team. We are looking for you, if you have: 3–5+ years of professional experience in Python backend development. Solid understanding of REST API design and OpenAPI standards. Experience with asynchronous processing and queue-based architectures, e.g. Celery, SQS. Experience with libraries and frameworks such as FastAPI, Pydantic, SQLAlchemy, boto3. Hands-on experience with core AWS services such as Lambda, API Gateway, S3, CloudFront, Secrets Manager, IAM, ECS/EKS, CloudWatch, etc. Good knowledge of DynamoDB and NoSQL data modelling. Good knowledge of PostgreSQL, SQL, and relational data modelling . Experience with both serverless (Lambda) and containerized (ECS/EKS) deployment models. Experience integrating with external APIs and third-party services. Experience with pytest and automated testing practices. Familiarity with CI/CD tools such as GitHub Actions and/or Jenkins. Experience with observability tools such as New Relic and CloudWatch. Understanding of distributed systems, scalability, reliability, and fault tolerance. Ability to apply SOLID principles, clean code practices, and common design patterns. Practical understanding of LLM-based applications or AI agentic frameworks. Ability to use AI development tools such as Cursor, Claude Code, or GitHub Copilot. Experience working in agile software development teams. Fluent English, both written and spoken. We offer: Participation in interesting and demanding projects. Flexible working hours. A great, non-corporate atmosphere. Possibility to work remote or hybrid (2 days per week from the office). Opportunities for development and promotion. Attractive package of benefits. We reserve the right to contact the selected candidates.

🏢 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: Python Developer role focused on building backend systems and AI/LLM integrations, starting with an open-source AI Red Teaming platform. The position involves developing a modular Python backend with integrations to major AI providers, real-time streaming, evaluation engines, analytics, and AWS deployment. Work includes commercial and open-source projects for international clients. 🗂️ Requirements: 3+ years commercial experience in Python backend development, Experience with Django, FastAPI, or Flask, Experience integrating AI/LLM APIs (e.g. OpenAI, Anthropic), Strong knowledge of PostgreSQL, Experience designing REST APIs, Experience with asynchronous programming in Python, Experience with Docker, Experience with CI/CD pipelines, Experience writing automated tests, Good command of English, Degree in Computer Science or related field 📃 Skills: Python, Django, FastAPI, Flask, PostgreSQL, REST, AsyncIO, Docker, CI/CD, OpenAI, Anthropic, Gemini, AWS, EKS, S3, RDS, WebSockets, SSE, LiteLLM 🏢 Description: We're looking for a Python Developer to join our team and work across a range of commercial and open-source projects focused on Python backend development and AI/LLM solutions. You'll build backends, design integrations with AI model providers, and contribute to products used by international clients. Project description: Your first project will be developing a Python-based backend for an open-source AI Red Teaming platform - a tool that enables organizations to systematically test and evaluate AI/LLM models for safety, fairness, and reliability. The project involves building a modular backend with integrations to major AI model providers (OpenAI, Anthropic, Google Gemini, AWS Bedrock, and others), real-time streaming, evaluation engine, analytics, and deployment on AWS. The platform will be released as an open-source product with a separate managed instance for the client. Requirements: - 3+ years of commercial experience in Python backend development - Experience with at least one modern Python web framework (Django, FastAPI, or Flask) - Practical experience integrating AI/LLM APIs into applications (e.g. OpenAI, Anthropic, or similar providers) - Solid knowledge of PostgreSQL and REST API design - Familiarity with async programming in Python - Experience with Docker and CI/CD pipelines - Experience writing automated tests - Good command of English (daily communication with an international client) - Degree in computer science or a related field Nice to have: - Experience with FastAPI - Experience with LiteLLM or similar LLM abstraction/routing libraries - Experience with real-time streaming (SSE, WebSockets) - Experience with AWS services (EKS, S3, RDS) - Familiarity with React or frontend technologies - Experience with open-source projects What We Offer - Fully remote work within a small, supportive team - Real responsibility from the start - no months of onboarding before you contribute - Variety - multiple projects mean diverse problems and technologies - Opportunities for professional growth, including contributions to open-source projects - A team culture built on transparency, trust, and fast feedback We look forward to hearing from you!

🏢 Summary: Mid–Senior Python Backend Developer role focused on designing and maintaining scalable backend services, RESTful APIs, and microservices in cloud environments. The position emphasizes Microsoft Azure-based solutions, CI/CD automation, and containerized deployments using Docker and Kubernetes. You will work in an Agile team to deliver secure, high-performance cloud-native applications. 🗂️ Requirements: Commercial experience as Python Backend Developer (mid–senior level), Strong experience with Python, Hands-on experience with Microsoft Azure (App Services, Functions, AKS, Storage), Experience with FastAPI and/or Django, Experience designing RESTful APIs, Experience with microservices architecture, Knowledge of CI/CD pipelines and automated testing, Production experience with Docker and Kubernetes, Knowledge of SQL and NoSQL databases, Understanding of cloud architecture patterns and scalability, Proficiency with Git 📃 Skills: Python, Azure, FastAPI, Django, REST, Microservices, CI/CD, Docker, Kubernetes, SQL, NoSQL, Git, GCP, Databricks, Golang, React, Terraform, Bicep, ARM, Kafka, ServiceBus 🏢 Description: Growth through diversity, equity, and inclusion. As an ethical business, we do what is right — including ensuring equal opportunities and fostering a safe, respectful workplace for each of us. We believe diversity fuels both personal and business growth. We're committed to building an inclusive community where all our people thrive regardless of their backgrounds, identities, or other personal characteristics. Tasks: Design, develop, and maintain backend services using Python . Build and optimize RESTful APIs and microservices . Work with Microsoft Azure (priority) to design, deploy, and manage cloud solutions. (Experience with GCP is acceptable as an alternative.) Implement CI/CD pipelines and automated testing workflows. Work with Docker and Kubernetes in production environments. Collaborate in an Agile/Scrum team and participate in code reviews, planning, and architecture discussions. What We're Looking For: Strong commercial experience as a Python Backend Developer (mid–senior level). Hands‑on experience with Azure (App Services, Functions, AKS, Storage, etc.). Experience with FastAPI and/or Django . Proven experience designing RESTful APIs and scalable microservice architectures. Solid understanding of CI/CD , automated testing, and deployment pipelines. Proficiency with Docker and Kubernetes in production. Comfortable working in English and collaborating in cross‑functional teams. Additional Expected Skills: Strong knowledge of SQL/NoSQL databases and data modeling. Understanding of cloud architecture patterns, scalability, and performance optimization. Familiarity with unit, integration, and end‑to‑end testing practices. Proficiency with Git and collaborative development workflows. Awareness of security best practices in cloud and backend environments. What Will Set You Apart: Experience with Databricks or other big‑data/data engineering platforms. Commercial experience with Golang . Full‑stack skills , especially with React. Experience with Infrastructure as Code tools (Terraform, Bicep, ARM templates). Knowledge of event‑driven architectures and messaging systems (Kafka, Azure Service Bus, etc.). Missing one or two of these qualifications? We still want to hear from you! If you bring a positive mindset, we'll provide an environment where you feel valued and empowered to learn and grow. We offer: Stable employment. On the market since 2008, 1500+ talents currently on board in 7 global sites. “Office as an option” model. You can choose to work remotely or in the office. Workation. Enjoy working from inspiring locations in line with our workation policy. Great Place to Work® certified employer. Flexibility regarding working hours and your preferred form of contract. Comprehensive online onboarding program with a “Buddy” from day 1. Cooperation with top-tier engineers and experts. Unlimited access to the Udemy learning platform from day 1. Certificate training programs. Lingarians earn 500+ technology certificates yearly. Upskilling support. Capability development programs, Competency Centers, knowledge sharing sessions, community webinars, 110+ training opportunities yearly. Grow as we grow as a company. 76% of our managers are internal promotions. A diverse, inclusive, and values-driven community. Autonomy to choose the way you work. We trust your ideas. Create our community together. Refer your friends to receive bonuses. Activities to support your well-being and health. Plenty of opportunities to donate to charities and support the environment. Modern office equipment. Purchased for you or available to borrow, depending on your location.