Python Tech Lead (IoT & Cloud)

🏢 Summary: The offer is for a senior backend and cloud engineer to design and scale IoT-driven, cloud-native platforms on AWS. The role focuses on building distributed systems, event-driven architectures, and scalable REST APIs using TypeScript and Node.js. It includes ownership of infrastructure, data processing workflows, and cloud-native deployments in production environments. 🗂️ Requirements: Completed degree in Computer Science or related field, 5+ years of backend engineering experience, Strong expertise in TypeScript, Strong expertise in Node.js, Hands-on experience with NestJS, Experience designing scalable REST APIs in production, Deep experience with AWS services, Experience with infrastructure as code, Experience with Kubernetes and containerization, Experience with CI/CD pipelines, Strong understanding of distributed systems, Knowledge of event-driven architectures, Experience with MQTT and IoT communication, Fluent English, Fluent Polish, Availability for hybrid work (1–2 days onsite per week) 📃 Skills: TypeScript, Node.js, NestJS, Fastify, REST, OpenAPI, AWS, IoT, IoTCore, Lambda, Kinesis, SQS, Timestream, IAM, CloudWatch, MQTT, PostgreSQL, Aurora, Terraform, OpenTofu, Kubernetes, Helm, GitLab, CI/CD 🏢 Description: Responsibilities We are looking for a strong backend and cloud engineer with deep experience in IoT and distributed systems who wants to shape and scale modern cloud - native platforms . You will design and evolve IoT and cloud architectures at OBI Smart Technologies Poland , working across device communication , telemetry processing and automation workflows . You act as a technical driver within the team, contributing to architecture decisions and ensuring scalable, secure and production-ready solutions across AWS environments . Your key responsibilities include: Design and develop scalable backend services using TypeScript, Node.js, NestJS and Fastify within distributed systems. Lead the design and evolution of REST APIs using OpenAPI standards and robust validation and versioning strategies. Design and operate AWS - native IoT and event-driven architectures using IoT Core, MQTT, Lambda, Kinesis and related services. Build scalable data processing and automation workflows for telemetry and energy-related data using Timestream , SQS and streaming services . Design and optimize persistence layers using PostgreSQL or Aurora and ensure data consistency and performance. Own infrastructure and deployment design using Terraform or OpenTofu , Kubernetes , Helm and GitLab CI/CD pipelines . Drive engineering best practices , observability , reliability and security standards while supporting GDPR-related backend processes and mentoring team members. Qualifications Completed university degree in Computer Science or a comparable technical field. 5+ years of professional experience in backend engineering with strong expertise in TypeScript and Node . js . Strong hands-on experience with NestJS and designing scalable REST APIs in production environments. Deep experience with AWS cloud services including IoT Core , Lambda , Kinesis , SQS , Timestream , IAM and CloudWatch . Strong experience with infrastructure as code , Kubernetes , containerization and CI/CD pipelines . Solid understanding of distributed systems, event-driven architectures and IoT communication patterns such as MQTT . Ability to translate complex business requirements into scalable technical solutions. Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week. About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 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: Hands-on Backend Tech Lead role responsible for driving technical architecture and implementation of a scalable SaaS legal-tech platform on AWS. The position combines active Python/Django development with team leadership, system design, and ownership of backend delivery. You will lead feature development end-to-end while ensuring high standards in scalability, security, and CI/CD practices. 🗂️ Requirements: 10+ years professional software development experience, 3+ years in technical leadership or mentoring role, Expert-level Python 3.10+, Expert-level Django 4.x, Strong REST API development experience, Strong system design and architecture skills, Experience building scalable systems on AWS, Advanced PostgreSQL knowledge, Experience with Redis and Elasticsearch/OpenSearch, Experience deploying and scaling applications with ECS, Lambda, S3, CloudFront, RDS, Strong CI/CD practices knowledge, Infrastructure as Code experience, Strong debugging and problem-solving skills 📃 Skills: Python, Django, REST, AWS, ECS, Lambda, S3, CloudFront, RDS, PostgreSQL, Redis, Elasticsearch, OpenSearch, Terraform, Terragrunt, CI/CD, CloudWatch, Sentry, KMS, SOPS, JWT 🏢 Description: About Us We build B2B legal technology that helps law firms and fund managers work faster and produce higher-quality results. Our product makes the legal processes for raising private investment funds simpler, helping lawyers speed up drafting, negotiations, and compliance. Our platform runs on a single-tenant SaaS system hosted on AWS in multiple regions. It is built using modern technologies: Python/Django, React/TypeScript, PostgreSQL, Redis, Elasticsearch/OpenSearch, S3, ECS, and Lambda. Our teams use Agile Scrum methods and strong practices for CI/CD, Infrastructure as Code (Terraform/Terragrunt), and security. Role Overview We are looking for a Backend Tech Lead to guide one of our engineering teams. This is a hands-on leadership role for a skilled senior backend engineer ready to lead. You will manage the technical direction of your team while still actively coding, designing systems, and solving complex platform and data challenges. You will oversee building features from design to implementation, mentor engineers, promote technical excellence, and encourage a collaborative team culture. You will work closely with Product Managers to ensure your team delivers scalable, maintainable, and high-quality solutions for our clients worldwide. Key Responsibilities Lead technical design, architecture, and implementation of new features. Ensure solutions are scalable, secure, and match the product vision. Mentor backend engineers and support their growth through guidance, code reviews, and career development. Stay hands-on in Python/Django coding and solve complex platform and database issues. Set and enforce best practices for coding, testing, CI/CD, and system design. Work with Product Managers to turn requirements into technical designs and development plans. Manage the team’s technical roadmap and delivery, addressing risks and meeting sprint goals. Facilitate technical discussions, resolve difficult decisions, and make key architectural choices. Improve developer workflows and team productivity with tools and automation. Essential Requirements At least 10 years of professional experience in software development. Minimum 3 years in a leadership or mentoring role. Expert in Python 3.10+ and Django 4.x, including REST API development. Strong system design and architecture skills, with experience building scalable AWS systems. Skilled with PostgreSQL, Redis, and Elasticsearch/OpenSearch. Experience deploying and scaling applications on AWS (ECS, Lambda, S3, CloudFront, RDS). Strong problem-solving and debugging skills across the stack. Preferred Requirements Experience in legal tech, FinTech, or regulated industries. Knowledge of Infrastructure-as-Code (Terraform/Terragrunt) and advanced AWS tools. Familiarity with monitoring tools (CloudWatch, Sentry) and security practices (KMS, SOPS, JWT). Experience leading remote or distributed teams and setting team development standards (testing, linting, pre-commit workflows). Personal Attributes Hands-on leader who enjoys building software and supporting their team. Clear communicator, able to explain technical ideas to technical and non-technical people. Pragmatic decision-maker balancing technical quality and business needs. Strong sense of ownership and accountability for team success and platform health. Proactive problem-solver, adaptable in a growing company. Committed to learning and sharing knowledge with the team. What We Offer Competitive salary. Career growth opportunities in a fast-growing tech company. Remote-first culture with international colleagues. Work with innovative legal-tech solutions and high-profile global clients. This senior role allows you to shape the technical future of our product, working across the stack to deliver features for some of the world’s leading law firms.

🏢 Summary: Backend and Cloud Engineer role focused on designing and scaling IoT-driven, cloud-native platforms in AWS. The position involves building distributed backend services, event-driven architectures, and telemetry processing systems while owning infrastructure and CI/CD pipelines. The engineer contributes to architecture decisions and ensures secure, scalable, and production-ready solutions. 🗂️ Requirements: University degree in Computer Science or related field, 5+ years of backend engineering experience, Strong expertise in TypeScript and Node.js, Hands-on experience with NestJS and scalable REST APIs, Deep experience with AWS services including IoT Core, Lambda, Kinesis, SQS, Timestream, IAM, CloudWatch, Experience with infrastructure as code and Kubernetes, Experience with containerization and CI/CD pipelines, Strong knowledge of distributed systems and event-driven architectures, Experience with IoT communication patterns such as MQTT, Fluent English and Polish, Availability for hybrid work (1–2 office visits per week) 📃 Skills: TypeScript, Node.js, NestJS, Fastify, REST, OpenAPI, AWS, IoT, IoTCore, Lambda, Kinesis, SQS, Timestream, IAM, CloudWatch, MQTT, PostgreSQL, Aurora, Terraform, OpenTofu, Kubernetes, Helm, GitLab, CI/CD 🏢 Description: Responsibilities We are looking for a strong backend and cloud engineer with deep experience in IoT and distributed systems who wants to shape and scale modern cloud - native platforms . You will design and evolve IoT and cloud architectures at OBI Smart Technologies Poland , working across device communication , telemetry processing and automation workflows . You act as a technical driver within the team, contributing to architecture decisions and ensuring scalable, secure and production-ready solutions across AWS environments . Your key responsibilities include: Design and develop scalable backend services using TypeScript, Node.js, NestJS and Fastify within distributed systems. Lead the design and evolution of REST APIs using OpenAPI standards and robust validation and versioning strategies. Design and operate AWS - native IoT and event-driven architectures using IoT Core, MQTT, Lambda, Kinesis and related services. Build scalable data processing and automation workflows for telemetry and energy-related data using Timestream , SQS and streaming services . Design and optimize persistence layers using PostgreSQL or Aurora and ensure data consistency and performance. Own infrastructure and deployment design using Terraform or OpenTofu , Kubernetes , Helm and GitLab CI/CD pipelines . Drive engineering best practices , observability , reliability and security standards while supporting GDPR-related backend processes and mentoring team members. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications Completed university degree in Computer Science or a comparable technical field. 5+ years of professional experience in backend engineering with strong expertise in TypeScript and Node . js . Strong hands-on experience with NestJS and designing scalable REST APIs in production environments. Deep experience with AWS cloud services including IoT Core , Lambda , Kinesis , SQS , Timestream , IAM and CloudWatch . Strong experience with infrastructure as code , Kubernetes , containerization and CI/CD pipelines . Solid understanding of distributed systems, event-driven architectures and IoT communication patterns such as MQTT . Ability to translate complex business requirements into scalable technical solutions. Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week. About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 Summary: Hands-on backend and cloud engineering role focused on building scalable IoT and cloud-native platforms in AWS. The position involves developing backend services, designing REST APIs, and implementing event-driven IoT architectures with strong emphasis on reliability and automation. You will contribute to infrastructure, data processing, and deployment pipelines in a production-grade AWS environment. 🗂️ Requirements: Completed degree in Computer Science or related field, 3+ years of backend development experience with TypeScript and Node.js, Strong knowledge of REST API design and NestJS framework, Hands-on experience with AWS services (Lambda, S3, SQS, IoT Core), Experience with relational databases such as PostgreSQL and ORM tools, Basic experience with containerization and CI/CD pipelines, Experience with infrastructure as code tools, Understanding of cloud-native or event-driven architectures, Fluent English and Polish, Availability for hybrid work (1–2 office visits per week) 📃 Skills: TypeScript, Node.js, NestJS, Fastify, OpenAPI, AWS, Lambda, S3, SQS, IoT, MQTT, Kinesis, Timestream, PostgreSQL, Aurora, TypeORM, Terraform, OpenTofu, Docker, CI/CD, Vue, IoT 🏢 Description: Responsibilities We are looking for a hands-on software and cloud engineer with a strong backend focus who wants to grow within IoT and cloud-native systems . You will contribute to building scalable IoT and cloud platforms at OBI Smart Technologies Poland , working on systems handling device communication , telemetry ingestion , and automation workflows . You collaborate closely with backend engineers, architects and product teams to deliver reliable and production-ready solutions across AWS -based environments. Your key responsibilities include: Develop and maintain backend services using TypeScript, Node.js, NestJS and Fastify . Design and implement REST APIs using OpenAPI standards and validation patterns . Contribute to AWS - based IoT and event-processing architectures including IoT Core, MQTT and telemetry ingestion . Support development of data processing and automation workflows using Lambda, SQS, Kinesis and Timestream . Work with PostgreSQL or Aurora databases and maintain persistence layers using TypeORM . Contribute to infrastructure and deployment processes using Terraform or OpenTofu , Docker and CI/CD pipelines . Support monitoring , testing , observability and operational stability while occasionally contributing to frontend components in Vue 3. Qualifications Completed university degree in Computer Science or a comparable technical field. 3+ years of experience in backend development using TypeScript and Node.js . Good knowledge of REST API design and frameworks such as NestJS. Hands-on experience with AWS services such as Lambda, S3, SQS or IoT Core . Experience working with relational databases such as PostgreSQL and ORM tools. Basic experience with containerization , CI/CD pipelines and infrastructure as code tools. Understanding of cloud-native or event-driven architectures Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week. About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "

🏢 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: Offer for an experienced Backend Tech Lead responsible for defining technical direction, designing system architecture, and leading backend development in Python. The role combines hands-on coding with architectural decision-making, performance optimization, and mentoring the team. You will ensure high quality, scalability, and stability of backend systems in a production environment. 🗂️ Requirements: Minimum 6 years commercial experience in backend development, Experience in technical leadership or architectural responsibility, Very good knowledge of Python and FastAPI, Strong knowledge of PostgreSQL and SQL optimization, Experience with Redis, Practical experience with asynchronous Python, Experience designing backend architectures and APIs, Experience with automated testing using pytest, Experience with Docker and Git, Experience with CI/CD and deployment automation, Ability to debug, optimize and diagnose production issues, Experience with monitoring and log analysis, Knowledge of Atlassian tools (Jira, Confluence) 📃 Skills: Python, FastAPI, PostgreSQL, SQL, Redis, Docker, Git, pytest, CI/CD, Jira, Confluence 🏢 Description: Szukamy doświadczonego Tech Leada Backend, który poza rozwijaniem oprogramowania potrafi wyznaczać kierunek techniczny rozwoju produktu, podejmować decyzje architektoniczne oraz wspierać zespół w budowaniu wysokiej jakości rozwiązań. Poszukujemy osoby z minimum 6-letnim doświadczeniem komercyjnym w tworzeniu systemów backendowych oraz doświadczeniem w prowadzeniu technicznym zespołu lub pełnieniu roli seniora odpowiedzialnego za architekturę i standardy techniczne. Wymagania Bardzo dobra znajomość: Python; FastAPI; PostgreSQL; Redis; SQL; Docker; Git. Doświadczenie i kompetencje: doświadczenie w projektowaniu architektury systemów backendowych i podejmowaniu decyzji technicznych; bardzo dobra umiejętność debugowania, diagnozowania i optymalizacji aplikacji produkcyjnych; doświadczenie w projektowaniu API oraz modelowaniu złożonej logiki biznesowej; bardzo dobra znajomość relacyjnych baz danych oraz optymalizacji zapytań SQL; praktyczne doświadczenie z asynchronicznym Pythonem; doświadczenie w tworzeniu i utrzymywaniu testów automatycznych z wykorzystaniem pytest; wysoka dbałość o jakość, czytelność, utrzymywalność i skalowalność kodu; doświadczenie w prowadzeniu code review oraz definiowaniu standardów programistycznych; umiejętność mentoringu i wspierania rozwoju mniej doświadczonych członków zespołu; samodzielność w analizie problemów i proponowaniu rozwiązań technicznych; doświadczenie w pracy z monitoringiem, logami oraz diagnozowaniem problemów na środowiskach produkcyjnych; znajomość narzędzi Atlassian (Jira, Confluence); umiejętność efektywnej współpracy z Product Ownerami oraz innymi interesariuszami; doświadczenie z procesami CI/CD oraz automatyzacją wdrożeń. Zakres odpowiedzialności: wyznaczanie kierunku technicznego rozwoju backendu; projektowanie architektury systemu oraz podejmowanie kluczowych decyzji technologicznych; rozwój aplikacji backendowych oraz nadzór nad jakością implementacji; projektowanie i rozwój API oraz logiki biznesowej; identyfikowanie obszarów wymagających refaktoryzacji i usprawnień architektonicznych; optymalizacja wydajności aplikacji, baz danych oraz procesów backendowych; definiowanie i egzekwowanie standardów jakości kodu, testów oraz code review; diagnozowanie i rozwiązywanie złożonych problemów produkcyjnych; wspieranie zespołu w rozwiązywaniu wyzwań technicznych oraz podejmowaniu decyzji projektowych; mentoring programistów oraz rozwijanie kompetencji technicznych zespołu; współtworzenie roadmapy technologicznej oraz planowanie rozwoju systemu; dbanie o stabilność, bezpieczeństwo i utrzymywalność platformy. Mile widziane: podstawowa znajomość zagadnień frontendowych, w tym React; doświadczenie z integracjami zewnętrznymi (API dostawców, IdP/OIDC, usługi mailowe itp.); znajomość zagadnień związanych z bezpieczeństwem aplikacji webowych, w tym uwierzytelniania, autoryzacji, kontroli dostępu oraz ochrony danych. Jak wygląda praca u nas: masz realny wpływ na architekturę systemu, kierunek rozwoju technologicznego oraz standardy pracy zespołu; uczestniczysz w kluczowych decyzjach dotyczących produktu i technologii; rozwijasz produkt, który jest aktywnie wykorzystywany i stale rozwijany; masz przestrzeń do proponowania własnych rozwiązań, usprawnień i inicjatyw technicznych; stawiamy na pragmatyczne, proste i skuteczne rozwiązania zamiast niepotrzebnej złożoności; pracujesz w zespole opartym na bezpośredniej komunikacji i szybkim podejmowaniu decyzji; masz wpływ zarówno na implementację, jak i na procesy techniczne oraz organizację pracy zespołu; cenimy odpowiedzialność, partnerstwo i proaktywną postawę; działamy bez rozbudowanych struktur korporacyjnych - decyzje podejmujemy szybko i blisko zespołu. Co oferujemy: pracę wśród życzliwych i wspierających osób – stawiamy na relacje i dobrą atmosferę, mówimy sobie po imieniu. wpływ i nieskrępowany rozwój – Twoje pomysły i rozwiązania traktujemy na serio, pracę z biura (Warszawa-Żoliborz) dofinansowanie do karty MultiSport i opieki medycznej – lubimy sport, dbamy o zdrowie. 🔎 Proces rekrutacji: 1. Przegląd zgłoszeń 2. 10-minutowy video screening z wybranymi kandydatami 3. 40-minutowy test kompetencji logicznych 4. Zadanie rekrutacyjne i rozmowa z zespołem

🏢 Summary: Staff Engineer role focused on leading the design, evolution, and reliability of a high-scale distributed backend platform that generates and distributes real-time customer offers. The position combines deep hands-on backend engineering with architectural leadership in event-driven systems. It emphasizes scalability, performance, observability, and operational excellence in a complex production environment. 🗂️ Requirements: Experience owning complex backend systems end-to-end in scalable production environments, Proven experience designing and operating distributed systems, Strong backend engineering expertise in Java, Solid understanding of JVM performance, Hands-on experience with Apache Kafka, Hands-on experience with Spring Boot and/or Vert.x, Hands-on experience with Redis, Hands-on experience with OpenSearch or Elasticsearch, Experience with observability tools such as Datadog, Grafana, or Kibana, Strong system design skills in event-driven and asynchronous architectures, Knowledge of concurrency and non-blocking system design, Experience with scalability, resiliency, and fault-tolerance strategies, Experience debugging production incidents in distributed environments 📃 Skills: Java, JVM, Kafka, Spring, Vert.x, Redis, OpenSearch, Elasticsearch, Datadog, Grafana, Kibana, Kubernetes 🏢 Description: ABOUT THE ROLE We are looking for a passionate and highly experienced Staff Backend Engineer to help lead the design, development, reliability, and evolution of a complex distributed backend platform. This role is ideal for someone who enjoys going deep into understanding both the technical and business context behind problems, not just implementing solutions mechanically. We value engineers who are curious, proactive, and driven by learning - people who enjoy experimenting, challenging assumptions, and troubleshooting complex systems until the root cause is fully understood. As a Staff Backend Engineer, you will provide technical leadership across architecture, engineering practices, and platform evolution while remaining hands-on when needed. You will help teams make better technical decisions, raise engineering standards, simplify complex systems, and create solutions that balance business needs with long-term platform health. We're looking for someone who is comfortable working in ambiguity, treats failure as an opportunity to learn, welcomes constructive feedback, and leads through collaboration, ownership, and execution rather than authority. ABOUT YOUR FUTURE PLATFORM TEAM We build and operate a critical backend platform that generates, validates, and distributes customer-facing offers across multiple markets in real time. The system sits at the intersection of pricing, configuration, compliance, and localization - where milliseconds matter, correctness is non-negotiable, and small mistakes can have large-scale impact. Our systems apply complex configuration and licensing rules, handle market and event-level blocking, manage multi-language localization, and transform raw pricing data into customer-ready offers consumed across the ecosystem. We process high-throughput event streams, deal with constantly changing data, and solve problems that require both strong engineering fundamentals and deep domain understanding. Success means no incorrect or missing offers in production, near real-time reflection of pricing and configuration changes, fully compliant offers across jurisdictions, and seamless multi-language experiences for customers. Our ecosystem is built around: Event streaming and backbone: Apache Kafka Backend services: Java 23+ with Spring Boot and Vert.x (we are continuously evolving toward highly reactive, asynchronous, and event-driven architecture) State and performance optimization: Redis Search and analytics: OpenSearch / Elasticsearch Observability and operations: Datadog, Grafana, Kibana Runtime and scalability: Kubernetes-based containerized infrastructure We are actively evolving our platform toward more reactive, asynchronous, and event-driven architectures, making this an exciting environment for engineers who enjoy distributed systems, performance, concurrency, and real-time data processing challenges. WHAT YOU'LL DO Technical Leadership Leading architecture and design discussions for scalable, resilient distributed systems Collaborating with Architects and senior engineers to define solution approaches and evaluate new technologies through spikes and PoCs Improving and simplifying existing system designs while maintaining high engineering standards for performance, correctness, and maintainability Maintaining a strong engineering bar across quality, scalability, and maintainability Platform Reliability & Engineering Excellence Proactively identifying scalability, reliability, and performance risks across the platform Leading debugging and root cause analysis for complex production incidents Improving observability, monitoring, alerting, and operational readiness Driving technical debt reduction and continuous platform improvement Promoting best practices across event-driven systems, resiliency patterns, performance optimization, testing, automation, and CI/CD Team Enablement & Collaboration Supporting day-to-day technical coordination within the team and contributing to incident handling and engineering discussions Mentoring engineers through design reviews, code reviews, and hands-on technical guidance Supporting cross-team collaboration and helping troubleshoot integration and platform issues Encouraging a culture of collaboration, clarity, and shared ownership Actively participating in engineering communication channels and helping unblock others Delivery & Execution Working closely with Product, Engineering Managers, and Architects to translate ideas into executable technical solutions Helping define and break down EPICs and technical initiatives in Jira Driving clarity in ambiguous or complex technical initiative Ensuring alignment between short-term delivery needs and long-term platform evolution WHAT WE'RE LOOKING FOR Required Experience: Experience owning complex backend systems end-to-end in scalable production environments Proven experience designing and operating distributed systems Strong backend engineering expertise in Java, with solid understanding of JVM performance Hands-on experience with: Apache Kafka and event-driven architectures Spring Boot and/or Vert.x Redis for low-latency and stateful use cases OpenSearch / Elasticsearch for querying and analytics Observability tools such as Datadog, Grafana, or Kibana Strong system design skills, including: Event-driven and asynchronous architectures Concurrency and non-blocking system design Scalability, resiliency, and fault-tolerance strategies Evaluating trade-offs between latency, throughput, and consistency Experience debugging production incidents in distributed environments Strong communication skills and ability to influence technical decisions across teams Proactive mindset with strong ownership and accountability Comfortable working in complex, fast-paced engineering environments Collaborative approach and willingness to support and mentor others Nice to Have: Kubernetes and cloud-native infrastructure experience Experience building internal platforms or shared engineering frameworks SRE mindset and operational excellence practices Experience with real-time or high-throughput data systems Experience leading cross-team technical initiatives WHAT SUCCESS LOOKS LIKE Teams rely on you for technical direction and practical problem-solving The platform becomes more reliable, scalable, and easier to operate over time Production incidents decrease due to proactive engineering and improved system design Cross-team dependencies are better coordinated and easier to manage Engineering quality and consistency improve across services and squads Engineers grow technically through your mentorship and guidance WHAT WE OFFER Competitive salary aligned with your experience, expertise, and impact A collaborative, inclusive, and fast-paced engineering environment where ideas are welcomed, ownership is encouraged, and continuous learning is valued Hybrid work policy 4 weeks of Workation (T&C apply) Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card) Training budget ICAS assistance program that can provide help and guidance during challenging moments. Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Free parking for bicycles and motorcycles Free gym in the building Equipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25)

🏢 Summary: Backend-focused Software and Cloud Engineer role focused on building scalable IoT and cloud-native platforms in AWS. The position involves developing backend services, designing REST APIs, and implementing event-driven architectures for device communication and telemetry processing. You will also contribute to infrastructure, deployment, and data processing workflows in production cloud environments. 🗂️ Requirements: Completed degree in Computer Science or related technical field, 3+ years of backend development experience with TypeScript and Node.js, Strong knowledge of REST API design and NestJS, Hands-on experience with AWS services (Lambda, S3, SQS, IoT Core), Experience with PostgreSQL and ORM tools, Basic experience with containerization, CI/CD, and infrastructure as code, Understanding of cloud-native or event-driven architectures 📃 Skills: TypeScript, Node.js, NestJS, Fastify, OpenAPI, AWS, Lambda, S3, SQS, IoTCore, MQTT, Kinesis, Timestream, PostgreSQL, Aurora, TypeORM, Terraform, OpenTofu, Docker, CICD, Vue, REST 🏢 Description: Responsibilities We are looking for a hands-on software and cloud engineer with a strong backend focus who wants to grow within IoT and cloud-native systems . You will contribute to building scalable IoT and cloud platforms at OBI Smart Technologies Poland , working on systems handling device communication , telemetry ingestion , and automation workflows . You collaborate closely with backend engineers, architects and product teams to deliver reliable and production-ready solutions across AWS -based environments. Your key responsibilities include: Develop and maintain backend services using TypeScript, Node.js, NestJS and Fastify . Design and implement REST APIs using OpenAPI standards and validation patterns . Contribute to AWS - based IoT and event-processing architectures including IoT Core, MQTT and telemetry ingestion . Support development of data processing and automation workflows using Lambda, SQS, Kinesis and Timestream . Work with PostgreSQL or Aurora databases and maintain persistence layers using TypeORM . Contribute to infrastructure and deployment processes using Terraform or OpenTofu , Docker and CI/CD pipelines . Support monitoring , testing , observability and operational stability while occasionally contributing to frontend components in Vue 3. Benefits Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. Language Courses – you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones! Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Qualifications Completed university degree in Computer Science or a comparable technical field. 3+ years of experience in backend development using TypeScript and Node.js . Good knowledge of REST API design and frameworks such as NestJS. Hands-on experience with AWS services such as Lambda, S3, SQS or IoT Core . Experience working with relational databases such as PostgreSQL and ORM tools. Basic experience with containerization , CI/CD pipelines and infrastructure as code tools. Understanding of cloud-native or event-driven architectures Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week. About OBI Smart Technologies WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co-designing, building and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. OUR MISSION: " We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business-critical solutions to support the targets of our customer. "