Software Engineer (Backend)

🏢 Summary: Backend Software Engineer role focused on building and evolving core services for a scalable, microservices-based IoT platform managing millions of devices globally. The position involves designing, developing, and maintaining high-performance backend systems in a cloud-native, distributed environment. You will contribute across the full software development lifecycle, including architecture, deployment automation, and reliability improvements. 🗂️ Requirements: Proficiency in at least one JVM language (Java or Scala), Understanding of secure software development (authentication, authorization, data handling), Knowledge of data storage and caching (MongoDB, Redis), Ability to write clean, production-grade backend code, Basic understanding of cloud-native environments (containers, CI/CD, Kubernetes), Experience with backend service design and distributed systems concepts 📃 Skills: Java, Scala, JVM, MongoDB, Redis, Kubernetes, CI/CD, Containers, REST, Microservices, Cloud, Authentication, Authorization, Caching, AI 🏢 Description: Software Engineer (Backend) Join the team responsible for developing and maintaining Coiote DM – a scalable, microservices-based platform used to remotely manage millions of IoT devices worldwide. Our system enables secure device provisioning, monitoring, firmware updates, and large-scale device lifecycle management. We work with modern backend technologies, cloud infrastructure, and distributed systems to ensure high performance, scalability, and reliability. We are looking for a Regular Software Engineer (Backend) to join our team and help us build and evolve core backend services powering the platform. Requirements: Good understanding of at least one JVM language (Java or Scala) Understanding of secure software development (authentication, authorization, data handling) Knowledge of data storage and caching (e.g., MongoDB, Redis) Writing clean, maintainable, production-grade backend code using modern AI assistance Basic understanding of cloud-native environments (containers, CI/CD, Kubernetes) English (B2+) and Polish (C2- we speak Polish on a daily basis) A huge plus if you have: Awareness of infrastructure (for eg. service discovery, networking, circuit breaking, retries, routing, K8s, VMs, CI/CD) ISO/OSI model (basic networking knowledge) Practical understanding of REST APIs, service integration patterns, event driven and distributed architectures Using logs, metrics, traces, dashboards for debugging and analyses Responsibilities: Participate in the full software development lifecycle: design, development, code review, testing, deployment, and maintenance Design and implement scalable and reliable service infrastructure Build and improve deployment automation and CI/CD pipelines Collaborate with product and customer-facing teams on technical analysis, PoCs, and custom adaptations Support other engineers through code reviews, feedback, and mentoring (especially junior team members) Contribute to improving engineering practices, technical standards, and system architecture Work model: Hybrid work model Mandatory onboarding period (first 3 months): at least 3 days per week in the office What we offer: Work on a large-scale IoT platform used globally Real impact on architecture, performance, and product quality Close collaboration with experienced engineers Space for initiative and technical ownership Opportunity to grow in backend, cloud, and distributed systems Flexible working hours Equipment of your choice (MacBook Pro / ThinkPad) Team with strong engineering culture and a good sense of humor Onsite gym and chillout space Multisport card Medical care Kitchen full of snacks and treats (including Good Lood ice cream) Car parking area and bike room A relaxed work atmosphere – no dress code, no open space

🏢 Summary: The offer is for a Regular QA Engineer to test and improve a large-scale, microservices-based IoT platform used for remote device management worldwide. The role combines manual testing with building automated tests in JavaScript/TypeScript while supporting multiple development teams. It focuses on ensuring quality, reliability, and continuous improvement of test processes in a cloud-based environment. 🗂️ Requirements: Minimum 2 years of experience as QA Engineer, Experience with JavaScript or TypeScript, Experience with E2E testing frameworks, Knowledge of HTML and CSS, Understanding of HTTP and REST, Understanding of OOP concepts, Experience with Git, Understanding of networking concepts, Understanding of database concepts, Basic knowledge of CI/CD concepts, Polish language proficiency C2, English language proficiency B2 📃 Skills: JavaScript, TypeScript, HTML, CSS, HTTP, REST, Git, TestCafe, CI/CD, MongoDB, Postman, Kubernetes, Jenkins, GitLab, OOP 🏢 Description: QA Engineer Join the team responsible for developing and maintaining Coiote DM – a scalable, microservices-based platform used to remotely manage millions of IoT devices worldwide. You will become part of a growing QA group supporting 5 development teams, helping by manual testing and building automated tests in JavaScript/TypeScript, so strong practical knowledge of these technologies is essential. Our system enables secure device provisioning, monitoring, firmware updates, and large-scale device lifecycle management. We work with modern web technologies, cloud infrastructure, and automated testing frameworks to ensure high quality and reliability of the platform. We are looking for a technically oriented Regular QA Engineer who: Has good experience with JavaScript or TypeScript Has at least 2 years experience as an QA Engineer Understands basic OOP concepts Knows HTML , CSS , HTTP / REST fundamentals Has experience with Git Understands basic networking and database concepts Has basic knowledge of CI/CD and infrastructure concepts Has experience with E2E testing frameworks (e.g., TestCafe or similar) Can read and communicate in Polish (C2- we speak Polish on a daily basis) and English (B2) Nice to have: Is familiar with ISTQB Foundation Level Knowledge of MongoDB Experience with Postman (API testing) Basic understanding of Kubernetes Exposure to GitLab CI/CD or Jenkins Responsibilities: Design and execute functional and non-functional tests Prepare clear test cases, bug reports, and documentation Support and gradually expand test automation coverage Verify requirements and proactively ask questions to clarify expected behavior Participate actively in team meetings (planning, refinement, retrospectives) Report progress and escalate risks when necessary Contribute ideas to improve QA processes, standards, and quality culture What we offer: Highly skilled team members with a unique sense of humor MacBook Pro / ThinkPad Flexible work schedule Work on a large-scale IoT platform used globally Real impact on product quality across multiple teams Close cooperation with experienced developers and QA engineers Possibility to develop skills in test automation, CI/CD, and cloud technologies Hybrid work model (preferably office-based, but flexible - mandatory 3 month onboarding process with at least 3 days work from office in a week) Space for initiative and process improvement ideas Onsite gym and chillout space Multisport card Medical care Kitchen full of snacks and treats (including Good Lood ice cream) Car parking area and bike room A relaxed work atmosphere – no dress code, no open space If you already have experience working on real projects and want to contribute to product quality in a thoughtful and collaborative way, we invite you to talk with us! With us, you will have an impact on the process, work closely with the product team, and have space to grow.

🏢 Summary: The offer is for a Junior/Regular QA Engineer to support quality assurance of a scalable, microservices-based IoT platform managing millions of devices worldwide. The role focuses on manual and automated testing, expanding test automation coverage, and collaborating with multiple development teams to ensure high system reliability. You will work with modern web technologies, cloud infrastructure, and CI/CD tools in a hybrid work model. 🗂️ Requirements: Experience with JavaScript or TypeScript, Understanding of OOP concepts, Knowledge of HTML, CSS, HTTP, REST, Experience with Git, Understanding of networking concepts, Understanding of database concepts, Basic knowledge of CI/CD concepts, Experience with E2E testing frameworks (e.g., TestCafe), Ability to read and communicate in Polish (C2), Ability to read and communicate in English (B2) 📃 Skills: JavaScript, TypeScript, HTML, CSS, HTTP, REST, Git, TestCafe, CI/CD, MongoDB, Postman, Kubernetes, GitLab, Jenkins, Angular, Java, Scala 🏢 Description: QA Engineer Join the team responsible for developing and maintaining Coiote DM – a scalable, microservices-based platform used to remotely manage millions of IoT devices worldwide. Our system enables secure device provisioning, monitoring, firmware updates, and large-scale device lifecycle management. We work with modern web technologies, cloud infrastructure, and automated testing frameworks to ensure high quality and reliability of the platform. You will become part of a growing QA group supporting 5 development teams, helping us strengthen quality ownership and increase test automation coverage. We are looking for a technically oriented Junior QA Engineer who: Has experience with JavaScript or TypeScript Understands basic OOP concepts Knows HTML , CSS , HTTP / REST fundamentals Has experience with Git Understands basic networking and database concepts Has basic knowledge of CI/CD and infrastructure concepts Has experience with E2E testing frameworks (e.g., TestCafe or similar) Can read and communicate in Polish (C2) and English (B2) Nice to have: Is familiar with ISTQB Foundation Level Knowledge of MongoDB Experience with Postman (API testing) Basic understanding of Kubernetes Exposure to GitLab CI/CD or Jenkins Knowledge of Angular or Java/Scala Responsibilities (the Junior QA will): Perform manual testing of low and medium complexity features in a microservices-based system Design and execute functional and non-functional tests Prepare clear test cases, bug reports, and documentation Support and gradually expand test automation coverage Verify requirements and proactively ask questions to clarify expected behavior Participate actively in team meetings (planning, refinement, retrospectives) Report progress and escalate risks when necessary Contribute ideas to improve QA processes, standards, and quality culture What we offer: Highly skilled team members with a unique sense of humor MacBook Pro / ThinkPad Flexible work schedule Work on a large-scale IoT platform used globally Real impact on product quality across multiple teams Close cooperation with experienced developers and QA engineers Possibility to develop skills in test automation, CI/CD, and cloud technologies Hybrid work model (preferably office-based, but flexible - mandatory 3 month onboarding process with at least 3 days work from office in a week ) Space for initiative and process improvement ideas We are looking for QA engineers at different stages of their careers — both Junior and Regular . If you already have experience working on real projects and want to contribute to product quality in a thoughtful and collaborative way, we invite you to talk with us! With us, you will have an impact on the process, work closely with the product team, and have space to grow — whether you are building your first solid foundations or looking to move to the next level and help shape quality standards.

🏢 Summary: Senior Backend Engineer role focused on building and scaling backend microservices for consumer-facing platforms and internal data privacy systems. The position involves developing distributed, event-driven systems supporting personalization, search, and regulatory compliance at scale. It requires strong experience in JVM technologies and cloud-native environments. 🗂️ Requirements: Strong commercial experience with JVM-based languages (Java or Scala), Experience with Kotlin or willingness to learn, Solid understanding of microservices architecture, Experience with event-driven systems, Experience with Docker and Kubernetes, Hands-on CI/CD experience in production, Experience with unit and integration testing, Experience with relational databases and SQL, Ability to design and maintain scalable distributed systems 📃 Skills: Java, Scala, Kotlin, JVM, Microservices, Docker, Kubernetes, CI/CD, SQL, PostgreSQL, AWS, Terraform, Elasticsearch, MongoDB, GraphQL, Go, Python 🏢 Description: We are looking for a Senior Backend Engineer to join a fast-growing product organization working on consumer-facing platforms and internal data systems. This role is suited for an experienced backend engineer who is comfortable building scalable, reliable services across different domains, from customer-facing journeys to data privacy and compliance infrastructure. About the Project: You will contribute to backend systems that power core customer experiences and internal platform initiatives. Depending on the team, this includes scaling a menu and personalization platform for high-traffic consumer applications, or building a centralized Data Privacy Service handling regulatory compliance (GDPR, CCPA) and Data Subject Requests at scale. Both streams require strong engineering fundamentals, a microservices mindset, and the ability to deliver in complex, distributed environments. Responsibilities: Design, develop, and maintain scalable backend microservices across consumer or data platform domains; Build systems supporting search, personalization, customer targeting, and engagement; Develop and operate services ensuring regulatory compliance and secure data handling (GDPR, CCPA); Work with event-driven architectures and distributed systems; Contribute to CI/CD pipelines, testing practices, and overall engineering quality; Collaborate with product and engineering teams to deliver reliable and performant solutions. Qualifications: Strong commercial experience with JVM-based languages (Java, Scala, or similar); Experience with Kotlin, or willingness to learn it on the project; Solid understanding of microservices architecture and event-driven systems; Experience with Docker and Kubernetes; Hands-on CI/CD experience in a production environment; Experience with unit and integration testing; Familiarity with relational databases (e.g. PostgreSQL) and SQL; AWS and Terraform experience is a plus; Experience with Elasticsearch, MongoDB, or GraphQL is a plus; Go or Python knowledge is a nice to have; Background in e-commerce, subscription platforms, or data privacy systems is a plus. Recruitment Process: Initial interview with our recruitment team; Interview with the hiring manager; Live Coding Assessment; Meeting with the Project Manager. Inuits Sp. z o.o. is registered in the National Register of Employment Agencies (KRAZ) under number 35420.

🏢 Summary: Staff Software Engineer (Backend) role focused on building advanced detection capabilities and scalable backend services across hybrid on‑prem and SaaS environments. The position involves architectural design, platform integrations, and leveraging AI/ML to enhance detection accuracy while mentoring engineers. It combines deep technical ownership with cross‑functional collaboration to drive product and platform improvements. 🗂️ Requirements: Degree in Computer Science or equivalent practical experience, 6+ years of experience building enterprise‑grade software with .NET, Experience designing and delivering scalable on‑prem and cloud‑based systems, Understanding of DevOps, CI/CD, and observability tooling, Strong knowledge of distributed systems and modular architectures, Experience with Docker, Kubernetes, and Infrastructure as Code, Ability to design REST APIs and asynchronous communication patterns, Proficiency in modern object‑oriented backend languages, Experience with high‑performance databases, Experience with Azure 📃 Skills: .NET, Azure, Docker, Kubernetes, IaC, CI/CD, DevOps, REST, PostgreSQL, EF, SQL, AI, ML, OOP 🏢 Description: We are looking for a Staff Software Engineer (backend oriented) , who will work on advanced detection capabilities, scalable backend services, and architectural improvements across hybrid environments. This role combines deep technical ownership with the opportunity to influence product direction and mentor other engineers. Responsibilities: Build and enhance detection features across services in hybrid environments Design scalable backend components for both on‑prem and SaaS deployments Contribute to platform‑wide integrations across multiple products Use AI/ML tools to improve detection accuracy, anomaly identification, and engineering productivity Collaborate with product, platform, and engineering leaders to align technical decisions with business goals Mentor engineers and support a culture focused on innovation, security, and technical excellence. Requirements: Degree in Computer Science or equivalent practical experience 6 - 10+ years of experience building enterprise‑grade software, including experience with .NET Background in designing and delivering scalable on‑prem and cloud‑based systems (ideally experience with Azure ) Understanding of DevOps, CI/CD, and observability tooling Strong understanding of distributed systems and modular architectures Experience with Docker, Kubernetes, and IaC Ability to design robust REST APIs and asynchronous communication patterns Proficiency in modern object‑oriented backend languages Experience with high‑performance databases (e.g., PostgreSQL, EF Core) Nice to have a solid knowledge of identity‑related technologies. Benefits: Attractive salary and benefits package, including Multisport card, insurance, and medical care Hybrid work from the Krakow office International work environment in a product company Training and development opportunities within the organization.

🏢 Summary: Backend Developer role focused on designing and building scalable, cloud-based applications using Java and Spring Boot in a microservices architecture. The position involves developing and deploying distributed, event-driven services on Azure using modern containerization and API technologies. The offer emphasizes building reliable, high-quality backend systems with up-to-date cloud-native practices. 🗂️ Requirements: Strong Java development experience, Experience with Spring Boot, Experience with microservices architecture, Experience with cloud-native applications, Familiarity with Azure, Knowledge of Kafka or similar messaging systems, Understanding of GraphQL or REST APIs, Experience with Docker, Experience with Kubernetes 📃 Skills: Java, Spring, SpringBoot, Microservices, Azure, Kafka, GraphQL, REST, Docker, Kubernetes 🏢 Description: We are seeking a talented Backend Developer to join our team, contributing to the design and development of modern, cloud-based applications. The role focuses on building scalable and maintainable services using up-to-date technologies and best practices. Key Responsibilities: Develop and maintain backend services using Java and Spring Boot . Build and support microservices solutions for distributed systems. Work with cloud platforms such as Azure , including event-driven architectures. Implement and consume APIs using GraphQL or REST. Package and deploy applications using Docker and Kubernetes . Collaborate with team members to deliver reliable, high-quality software. Required Skills & Experience: Strong background in Java development with Spring Boot . Experience with microservices and cloud-native applications. Familiarity with Azure , Kafka , or similar messaging/event systems. Understanding of API design ( GraphQL /REST). Practical experience with containerization ( Docker , Kubernetes ). Nice to Have: Knowledge of CI/CD practices and automated deployments. Experience with monitoring, logging, or observability in distributed systems.

🏢 Summary: Senior Backend Engineer role focused on transforming a mission-critical e-commerce domain supporting subscriptions and purchasing journeys for millions of users. The position centers on migrating a monolithic system to scalable microservices, improving performance and reliability, and shaping the future architecture of a global platform. Engineers will work with event-driven systems and modern AI tools while owning solutions end-to-end. 🗂️ Requirements: 5+ years of professional backend engineering experience, Strong experience designing and operating microservices architectures, Experience modernising legacy systems and decomposing monoliths, Solid understanding of distributed systems and scalable backend design, Commercial experience with Go, Java, Kotlin or Scala, Hands-on experience with Kafka or similar event-streaming technologies, Hands-on experience with PostgreSQL, Hands-on experience with Docker and Kubernetes, Experience with CI/CD pipelines, Practical experience using AI coding assistants (Claude Code, Cursor, Copilot or similar), Ability to review and validate AI-generated code, Comfortable owning solutions from idea to production 📃 Skills: Go, Golang, Java, Kotlin, Scala, Kafka, PostgreSQL, Docker, Kubernetes, CI/CD, GraphQL, DDD, TDD, BDD, Microservices 🏢 Description: Join a global e-commerce technology organisation serving millions of customers across multiple international markets. As a Senior Backend Engineer, you will become part of a team responsible for one of the company's most critical customer-facing domains. The platform supports customer subscriptions, plans, and purchasing journeys used daily by millions of users. This is not a maintenance role. The team is actively transforming a mission-critical domain, modernising legacy systems, reducing technical debt, and building the next generation of scalable services that will support future growth. You will play a key role in migrating core functionality from a monolithic architecture to modern microservices while helping shape the future architecture of a global platform. What You'll Do Build & Scale Core Services Design, develop, and maintain scalable backend services within a distributed microservices architecture. Build reliable systems supporting millions of customer interactions. Improve performance, reliability, and scalability across critical customer-facing services. Drive Modernisation Lead the migration of key business domains from monolithic systems to modern microservices. Reduce technical debt and improve long-term maintainability. Design solutions that support future platform growth. Shape Architecture Participate in architecture discussions and technical decision-making. Design orchestration layers supporting complex customer journeys and business processes. Help define engineering standards and best practices. Work with Event-Driven Systems Build and operate services powered by event-driven architectures. Work extensively with Kafka and real-time lifecycle events. Design resilient and observable distributed systems. Raise Engineering Standards Conduct code reviews and support other engineers through technical guidance. Promote best practices across software development, testing, deployment, and observability. Contribute to a strong culture of ownership and continuous improvement. AI-Powered Engineering Use modern AI tools and coding agents throughout the software development lifecycle. Leverage AI for onboarding, architecture exploration, implementation, testing, debugging, and productivity improvements. Apply engineering judgement to validate, verify, and safely integrate AI-generated outputs. What We're Looking For Backend Engineering Expertise 5+ years of professional backend engineering experience. Strong experience designing and operating microservices architectures. Experience modernising legacy systems and decomposing monoliths. Solid understanding of distributed systems and scalable backend design. Technical Stack Commercial experience with Go (Golang), Java, Kotlin or Scala Engineers coming from a JVM background should be open to working in a Go-driven environment. Hands-on experience with: Kafka or similar event-streaming technologies PostgreSQL Docker Kubernetes CI/CD pipelines Product & Ownership Mindset Comfortable owning solutions from idea through production. Strong problem-solving skills and ability to make technical trade-offs. Experience collaborating with product, business, and engineering stakeholders. AI Fluency Practical experience using AI coding assistants such as Claude Code, Cursor, Copilot, or similar tools. Understanding of how context, prompts, constraints, and validation influence AI-generated outputs. Ability to critically review and verify AI-generated solutions. Nice to Have Experience with subscription-based products. Experience in e-commerce environments. GraphQL knowledge. Familiarity with DDD, TDD, and BDD practices. What We Offer Opportunity to build systems used by millions of customers globally. High-impact engineering work with significant architectural ownership. International collaboration across distributed engineering teams. End-to-end ownership from idea to production. Hybrid working model (3 days per week in the Warsaw office). B2B cooperation model. 30 days of paid annual leave. Modern office located in Warsaw city centre. Continuous learning and professional growth opportunities.

🏢 Summary: Backend Engineer role focused on developing and maintaining a global Mobile Wallet Platform, combining Java backend development with DevOps responsibilities. The position involves managing containerized environments, building CI/CD pipelines, and improving system observability in a high-scale transaction system. Remote work with occasional on-site presence in Warsaw. 🗂️ Requirements: 3+ years of Java development experience, Hands-on experience with Kubernetes, Hands-on experience with Docker, Experience with CI/CD automation, Proficiency with Gradle or Maven, Experience with Apache Kafka, Experience with SQL or Oracle databases, English level B2 or higher 📃 Skills: Java, JavaEE, Kotlin, Docker, Kubernetes, Jenkins, GitLabCI, Gradle, Maven, Kafka, SQL, Oracle, OpenTelemetry 🏢 Description: Role Overview: Are you a developer who loves to own the entire lifecycle of an application? We are looking for a Backend Engineer with a strong DevOps mindset to bridge the gap between code and infrastructure for our global Mobile Wallet Platform. Key Responsibilities: Backend development (Java EE) with a focus on automation and deployment . Configuring and managing Docker and Kubernetes environments. Building and maintaining CI/CD pipelines (Jenkins, GitLab CI). Optimizing system observability using OpenTelemetry and logging tools Requirements: 3+ years of experience in Java development. Hands-on experience with Kubernetes and Docker is mandatory. Proficiency in CI/CD automation and Gradle/Maven. Experience with Apache Kafka and SQL/Oracle. Fluent English (B2+). Project Context Scale: Handling billions of transactions globally. Tech Stack: Java EE, Kotlin, Kafka, Docker, Kubernetes, OpenTelemetry. Location: Remote with occasional visits to the Warsaw office (approx. once a month). Team: Agile setup (5-7 people). Impact: Enabling financial inclusion for the unbanked populations worldwide.

🏢 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. "

🏢 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. "