Senior Backend Python Developer

🏢 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: 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 Engineer role focused on owning backend architecture, leading technical decisions, and delivering scalable high-load systems with AI-powered features such as chatbots and voice-to-text integrations. The position combines hands-on backend development with team leadership, emphasizing architecture, scalability, and production reliability. You will drive backend strategy, mentor engineers, and ensure robust AI/LLM integrations aligned with product goals. 🗂️ Requirements: 5+ years of software development experience, Strong hands-on experience with Python 3 and asynchronous programming, Experience with FastAPI or Django DRF, Experience designing microservices or modular architectures, Strong knowledge of PostgreSQL, Experience with Redis or MongoDB, Experience with vector databases, Experience with pytest and TDD/BDD principles, Experience with Docker and CI/CD pipelines, Experience with Kubernetes, Experience with AWS or GCP or Azure, Knowledge of clean code and SOLID principles, Experience with typing and type checking, Experience with scalability and production monitoring, Experience building GenAI or LLM-powered products 📃 Skills: Python, FastAPI, Django, PostgreSQL, Redis, MongoDB, Qdrant, pytest, Docker, Kubernetes, AWS, GCP, Azure, CI/CD, mypy, Pydantic, LangChain, LlamaIndex, LLaMA, Mistral, Mixtral 🏢 Description: We are looking for Senior Python Engineer to take ownership of backend architecture, technical leadership, code quality, and team development. You will work on complex backend systems, design scalable architectures, and lead a talented engineering team, collaborating closely with business stakeholders to translate requirements into robust technical solutions. You will play a key role in shaping the product roadmap, making strategic architecture decisions, and ensuring that delivery aligns with business goals. A key component of the initiative is the development of internal AI-powered capabilities, including a generic chatbot and voice-to-text features. You will provide technical leadership for AI integrations, ensuring scalable, maintainable, and performant systems. Basic German is a plus, but your expertise in strategy, technical leadership, and hands-on delivery is what matters most. Why Join Us: Lead a high-impact project with real public-sector relevance Take ownership of architecture and system design end-to-end Influence the product roadmap and technical direction Work with a talented, collaborative engineering team Contribute to AI-driven, innovative features with large-scale impact Responsibilities: Own backend architecture and technical decisions for scalable, high-load systems Lead the team in designing, implementing, and maintaining backend services and APIs Guide technical design reviews, code quality, and engineering best practices Balance hands-on development (~40–60%) with leadership and mentoring (~40–60%) Oversee scalability, performance optimization, and reliability of production systems Lead incident response, bug fixing, and production issue resolution Provide technical guidance for AI/LLM-powered features, such as chatbots and voice-to-text integration Collaborate closely with Product, Frontend, and AI/ML teams to translate requirements into technical solutions Drive adoption of observability, monitoring, and testing standards across the team Mentor and support engineers to foster team growth and knowledge sharing Must-Have Skills: 5+ years experience in Software Development Strong product mindset with experience in team organization, task prioritization, and project planning Ability to make and own technical and architectural decisions Strong problem-solving and proactive approach Excellent communication and interpersonal skills for cross-team collaboration Strong analytical and organizational abilities; able to manage dependencies, risks, and cross-team planning Hands-on experience with Python 3, including asynchronous programming Experience with backend frameworks (FastAPI, Django DRF) Experience designing and developing microservices or modular architectures Strong knowledge of relational (PostgreSQL) and NoSQL (Redis, MongoDB) databases Experience with vector storage (e.g., Qdrant) Understanding of testing strategies (pytest, TDD/BDD principles) Familiarity with Docker, CI/CD pipelines, and production deployments Strong experience with Kubernetes and cloud platforms (AWS, GCP, Azure) Knowledge of clean code principles, SOLID, typing (mypy, Pydantic) Experience with scalability, production monitoring, and incident management Experience building GenAI or LLM-powered products Nice-to-Have Skills: Experience with public-sector or government digital transformation projects Familiarity with LangChain, LlamaIndex, or similar tooling Experience with open-source LLMs (LLaMA, Mistral, Mixtral) Experience in high-growth startup environments Knowledge of cost optimization for AI inference and infrastructure Basic German language skills for team onboarding and future customer projects

🏢 Summary: Full Stack Developer role responsible for end-to-end architecture and development of a global application automating data collection, compliance reporting, and asset optimization. The position covers frontend (Angular) and backend (Python/FastAPI) development, AI integration, data engineering, and Kubernetes-based DevOps. It involves owning the full product lifecycle in an international, greenfield environment. 🗂️ Requirements: 5+ years of professional software development experience, Expertise in Python and FastAPI, Advanced Angular with TypeScript and RxJS, Strong experience with RESTful microservices, Proficiency in PostgreSQL design and optimization, Hands-on experience with ETL/ELT processes, Experience with Kubernetes and Docker, Experience with CI/CD pipelines (Jenkins or BitBucket), Experience working in SCRUM or Kanban, Bachelor’s degree in Computer Science or related field, Fluent English (B2/C1) 📃 Skills: Python, FastAPI, Angular, TypeScript, RxJS, REST, PostgreSQL, ETL, ELT, Kubernetes, Docker, Jenkins, BitBucket, S3, Linux, SCRUM, Kanban, LLM, AI 🏢 Description: Role Summary We are seeking an experienced Full Stack Developer to join an IT Hub in Poland. You will own the full product lifecycle of a global application designed to automate data collection, compliance reporting, and asset optimization across EMEA, APAC, and Americas. Key Responsibilities Architecture & Development: Design end-to-end modular architecture and develop both Frontend (Angular) and Backend (Python/FastAPI) components. Innovation: Integrate AI tools (LLMs, Code Assistants) to enhance development and automate complex data workflows. DevOps: Manage deployment and scalability on Kubernetes clusters using CI/CD pipelines. Data Management: Handle complex data consolidation, ETL processes, and PostgreSQL optimization. Technical Requirements Backend: Expert Python (FastAPI, RESTful microservices, automation scripts). Frontend: Advanced Angular (TypeScript, RxJS, complex forms/UI). Data: Mastery of PostgreSQL (design & optimization) and ETL/ELT processes. Infrastructure: Kubernetes, Docker, CI/CD (Jenkins/BitBucket), S3 Buckets, and Linux. Methodology: Strong experience in SCRUM/Kanban environments. Qualifications Experience: 5+ years of professional software development. Education: Bachelor’s degree in Computer Science or a related field. Languages: Fluent English (B2/C1) . Soft Skills: Analytical mindset, ability to work autonomously, and strong negotiation skills. What We Offer Opportunity to work on a greenfield project within a prestigious global financial group. Exposure to cutting-edge technologies and international stakeholders. A multicultural, professional environment focused on innovation and agility.

🏢 Summary: Contract opportunity for a Fullstack Developer to design and deliver web applications using modern Python and JavaScript frameworks, with a focus on AI-driven solutions. The role involves building and maintaining backend services, developing responsive frontend interfaces, and deploying applications in a cloud environment. Onsite presence is required in the Greater Copenhagen Area with a hybrid setup. 🗂️ Requirements: Strong backend development experience with Python, Experience with FastAPI, SQLAlchemy, Alembic, Proficiency in JavaScript and TypeScript, Experience with React and NextJS, Experience with PostgreSQL, Knowledge of Qdrant or other vector databases, Experience with Azure cloud platform, Experience with Docker containerization, Ability to develop and maintain fullstack web applications, Availability to work onsite minimum 3 days per week 📃 Skills: Python, FastAPI, SQLAlchemy, Alembic, JavaScript, TypeScript, React, NextJS, PostgreSQL, Qdrant, Azure, Docker, LLM, LangChain, LangGraph 🏢 Description: Introduction & Summary We are seeking a highly skilled Fullstack Developer. The ideal candidate will possess extensive experience in backend and frontend development, with proficiency in Python and JavaScript frameworks. If you have a passion for developing innovative solutions and a keen interest in AI technologies. Main Responsibilities As a Fullstack Developer, you will be responsible for designing and implementing web applications and services. Your focus will be on enhancing user experiences through effective software solutions. Develop and maintain backend services using Python with FastAPI. Implement frontend solutions utilizing React / NextJS. Work with PostgreSQL (Relational) and Qdrant (Vector) databases. Utilize Azure and Docker for deploying applications. Collaborate with cross-functional teams to define, design, and ship new features. Ensure code quality and maintainability throughout the development process. Debug and optimize existing applications. Key Requirements Strong experience in backend development using Python (FastAPI, SQLAlchemy, Alembic). Proficient in frontend technologies, specifically Javascript/Typescript with React / NextJS. Experience with relational databases, particularly PostgreSQL. Knowledge of vector databases like Qdrant. Familiarity with cloud platforms such as Azure. Experience with Docker for containerization. Experience with LLM / AI technologies is a plus. Bonus: Familiarity with LangGraph / LangChain for Python. Nice to Have Previous experience with AI-driven applications. Understanding of software design patterns and best practices. Experience in agile development methodologies. Start: ASAP End: End of September 2026 Location: Greater Copenhagen Area Onsite/remote: min. 3 days onsite per week

🏢 Summary: Senior Backend Engineer role focused on designing, developing, and deploying scalable backend services and platform infrastructure using Python and FastAPI. The position involves working with PostgreSQL, Kubernetes, and CI/CD pipelines to deliver production-ready, high-performance systems. You will collaborate with cross-functional teams to build reliable, automated, and maintainable backend solutions. 🗂️ Requirements: 5+ years backend development experience in production environments, Strong proficiency in Python and FastAPI, Experience with relational databases, preferably PostgreSQL, Experience with TypeScript and Nx for tooling or automation, Hands-on experience with Kubernetes and Helm, Experience with Docker and containerization practices, Experience designing and maintaining CI/CD pipelines, Experience with observability, logging, and monitoring tools, Strong system design and problem-solving skills 📃 Skills: Python, FastAPI, PostgreSQL, TypeScript, Nx, Kubernetes, Helm, Docker, GitHubActions, CI/CD, AWS, GCP, Azure, Monitoring, Logging 🏢 Description: Our client is a leading European tech company building scalable, high-performance backend services and platforms for enterprise and AI-driven applications. Our mission is to combine cutting-edge backend technologies with reliable, automated DevOps practices, ensuring secure, maintainable, and high-quality systems for our clients. As a Senior Backend Engineer (Python / FastAPI) , you will play a key role in designing, developing, and deploying backend services, internal tools, and platform infrastructure. You will collaborate closely with product teams, frontend engineers, and DevOps to deliver robust, scalable, and production-ready solutions. Responsibilities: Develop and maintain backend services using Python (FastAPI) Work with PostgreSQL to design schemas, optimize queries, and ensure data integrity Build and maintain internal CLI tools using TypeScript Manage a monorepo using Nx Manage deployment workflows and infrastructure using Kubernetes (K8s) and Helm Implement CI/CD pipelines using GitHub Actions for automated testing and deployment Collaborate with cross-functional teams to improve system architecture, reliability, and scalability Troubleshoot and optimize performance across backend services and infrastructure Requirements: 5+ years of experience in backend development in a production setting with real users Strong proficiency in Python , especially building APIs with FastAPI Solid experience with relational databases, preferably PostgreSQL Experience with TypeScript / Nx for tooling or automation tasks Hands-on experience with Kubernetes (K8s) and Helm Familiarity with containerization best practices (Docker) Experience designing and maintaining CI/CD pipelines (GitHub Actions or similar) Strong problem-solving skills, system design thinking, and attention to detail Exposure to observability, logging, and monitoring tools Nice to Have: Experience with cloud platforms (AWS, GCP, Azure) Exposure to observability, logging, and monitoring tools Experience integrating backend systems with frontend or AI/ML pipelines Technology Stack: Backend: Python (FastAPI), PostgreSQL DevOps / Platform: Kubernetes (K8s), Helm, CI/CD (GitHub Actions) Internal tooling: TypeScript / Nx for CLI and automation tools Other: Docker, cloud infrastructure (AWS/GCP/Azure), monitoring and observability

🏢 Summary: Senior Back-End Developer role focused on designing and building scalable, secure APIs and services for a SaaS legal-tech platform hosted on AWS. The position involves developing distributed systems, optimizing data models, and integrating multiple AWS services to support complex enterprise workflows. You will collaborate with cross-functional teams to improve performance, reliability, and architecture of the back-end systems. 🗂️ Requirements: Experience as Back-End or Full-Stack Developer in SaaS environment, Strong knowledge of Python 3.10+, Strong knowledge of Django 4.x and Django REST Framework, Experience with PostgreSQL, Experience with Redis and/or Elasticsearch/OpenSearch, Experience with Celery and asynchronous task processing, Familiarity with AWS services: ECS, Lambda, S3, RDS, SQS/SNS, Experience with Git and CI/CD pipelines, Experience working in Agile/Scrum environment, Strong debugging and performance optimization skills 📃 Skills: Python, Django, DjangoRESTFramework, PostgreSQL, Redis, Elasticsearch, OpenSearch, Celery, AWS, ECS, Lambda, S3, RDS, SQS, SNS, Git, CI/CD, Terraform, Terragrunt, pytest, Ruff 🏢 Description: About Us We build B2B legal technology that helps law firms and fund managers work faster and produce high-quality results. Our product helps manage the legal processes used when raising private investment funds. It makes drafting, negotiation, and compliance work easier and faster for lawyers. We use a single-tenant SaaS system hosted on AWS in several regions. Our technology stack includes Python/Django 4.2, React 18 with TypeScript, PostgreSQL, Redis, Elasticsearch/OpenSearch, S3, ECS, and Lambda. Role Overview We are looking for a Senior Back-End Developer to design, build, and improve the APIs, data models, and services behind our product. You will work closely with front-end developers, QA engineers, and DevOps specialists to create reliable, scalable, and secure back-end systems used by global business clients. The ideal candidate has strong experience with Python/Django, AWS services, and distributed systems. They care about performance, clean architecture, and maintainable code. Key Responsibilities Design and build RESTful APIs using Python 3.10+ and Django 4.x / Django REST Framework. Create scalable data models and efficient queries using PostgreSQL, Redis, and Elasticsearch/OpenSearch. Build background jobs and asynchronous tasks using Celery, SQS, and Lambda. Integrate AWS services such as S3, SNS/SQS, CloudFront, ECS, and RDS into application workflows. Take part in code reviews and maintain clean, secure, and well-documented services. Work with DevOps to improve CI/CD pipelines and infrastructure automation. Help plan system architecture, scalability, and performance improvements. Essential Requirements Experience working as a Back-End or Full-Stack Developer in a SaaS environment. Strong knowledge of Python 3.10+ and Django 4.x / Django REST Framework. Experience with PostgreSQL, Redis, and/or Elasticsearch/OpenSearch. Familiarity with Celery, SQS/SNS, and AWS services such as ECS, Lambda, S3, and RDS. Experience with Git, CI/CD processes, and Agile/Scrum development. Strong debugging and problem-solving skills with attention to performance and reliability. Preferred Requirements Experience with infrastructure-as-code tools such as Terraform or Terragrunt and AWS developer tools. Knowledge of authentication systems, role-based access control, and single-tenant architecture. Experience working with text or document processing libraries. Familiarity with testing and code quality tools such as pytest, Ruff, and pre-commit workflows. Personal Attributes Practical engineer who values reliability and clean system design. Analytical and detail-focused problem solver. Comfortable working and communicating in cross-functional Agile teams. Proactive in improving code quality and developer experience. What We Offer Competitive salary and benefits. Remote-first work culture with colleagues from different countries. Opportunity to shape the back-end architecture and services of our global legal-tech product. Experience working with complex enterprise workflows and automation challenges.

🏢 Summary: Part-time Backend Developer role for early-career candidates or students, focused on building and maintaining web applications using Python, Django, and microservices architecture. The position involves developing, testing, debugging, and documenting backend solutions, as well as participating in code reviews. It offers hands-on experience in modern backend development within a collaborative team environment. 🗂️ Requirements: Experience with Python, Experience with Django framework, Knowledge of RESTful APIs, Knowledge of microservices architecture, Experience with SQL, Experience with PostgreSQL, Knowledge of data modeling, Knowledge of data warehouse concepts, Knowledge of software testing methodologies, Ability to create unit tests, Understanding of clean code principles, Familiarity with design patterns, Ability to read technical documentation in English, Adherence to software development best practices 📃 Skills: Python, Django, REST, Microservices, SQL, PostgreSQL, APIs, UnitTesting, IntegrationTesting, SystemTesting, DataModeling, DataWarehouse, GitHub, GitLab 🏢 Description: Who we are looking for: We are looking for a Backend Developer, available for at least half-time, to join our team. If you are at the beginning of your professional career or currently studying, this job is for you. Responsibilities: implementing and developing software based on Python, Django, and microservices technologies, designing and developing web applications, running, testing, and debugging implemented software, creating unit tests, documenting the source code you create, conducting code reviews of source code written by other team members. Requirements: experience with Python and the Django framework, knowledge of RESTful APIs, microservices architecture, and best practices in API design, experience with SQL, especially PostgreSQL, data modeling, and data warehouse concepts, English proficiency sufficient to read technical documentation, creative, solution-oriented problem-solving skills, knowledge of software testing methodologies, including unit, integration, and system testing, openness toward others and the ability to work in a team, willingness to learn new technologies, adherence to software development best practices, knowledge and application of clean code principles, and familiarity with design patterns. Nice to have: knowledge of industry trends, emerging technologies, and best practices in software development, personal projects in your portfolio, familiarity with code repository management platforms such as GitHub or GitLab, documented ability to lead and comprehensively manage complex projects, from initial planning and scope definition through successful implementation and delivery, ensuring timely execution and alignment with business goals. We offer: sports card co-funding, company events, opportunities to learn and gain experience, prospects of working on interesting and diverse projects, participation in industry events, the possibility to work 100% remotely.

🏢 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, focusing 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 scalable, production-grade systems. - Deep expertise in Python, including advanced OOP, concurrency/multiprocessing, memory management, data structures, and algorithms. - Experience with data-centric libraries such as Pandas, NumPy, or similar frameworks. - Experience with large-scale data storage formats such as Parquet, JSON, or column-oriented databases and relational/NoSQL databases. - Comfortable utilizing AI tools to accelerate delivery while maintaining validation, testing, security, and refactoring standards. What our client offers - Hybrid work model in Warsaw (minimum 3 days a week in the office). - Contract of Employment (UoP) with increased tax-deductible costs (KUP). - Private medical care including full dental care. - Lunch card. - Multisport card.

🏢 Summary: Hands-on backend engineering role focused on developing and maintaining Python-based solutions and automation tools with real impact on product and internal projects. The position involves end-to-end ownership of tasks, backend feature development, and technical problem-solving within a collaborative team. It is suited for engineers eager to grow through practical coding and code review experience. 🗂️ Requirements: Very good practical knowledge of Python, Experience in backend development projects, Experience from academic, research, or personal programming projects, Ability to write clean, readable, maintainable code, Knowledge of clean code principles, Understanding of programming best practices, Practical problem-solving skills, Ability to independently deliver tasks end-to-end 📃 Skills: Python, Backend, Automation, Scripting, Git, CodeReview 🏢 Description: Role Objective Development and maintenance of backend solutions and process automation, with a real impact on both product and internal projects. The role is focused on hands-on engineering work and quickly taking ownership of responsibilities. Responsibilities – Participation in backend development projects – Creating and developing scripts and automation tools – Collaborating with the team to solve technical problems – Independently delivering assigned tasks end-to-end – Participating in code reviews and team collaboration Requirements – Very good practical knowledge of Python – Experience gained through student research groups, academic projects, or personal projects – Ability to write clean, readable, and maintainable code – Knowledge of clean code principles and programming best practices – Practical problem-solving skills Desired Traits – Proactivity and initiative – Strong sense of ownership for assigned tasks – A mindset focused on learning and technical growth – Ability to work independently after a short onboarding We offer: – Flexible working hours – Hybrid work options – Medical care program and Multisport – Integrations events