Mid Backend Engineer | Networking Solutions

🏢 Summary: Junior Backend Software Engineer role focused on designing, implementing, and maintaining embedded Linux software for IoT networking devices. The position involves developing internal API frameworks and working with industrial networking technologies in a collaborative international R&D environment. Opportunity to grow while contributing to advanced connectivity solutions. 🗂️ Requirements: 1+ year C programming experience, 1+ year experience working with APIs, Experience with Shell or Python scripting, Knowledge of Git version control, Knowledge of Linux-based systems, Ability to design and maintain embedded Linux software, Experience developing and maintaining API frameworks, English proficiency 📃 Skills: C, Linux, Embedded, API, Shell, Python, Git, Lua, OpenWrt, Networking 🏢 Description: We are looking for a Junior Backend Software Engineer to create our developers' team in Warsaw, Poland. You will work with the leading networking solutions in the world and master your skills. Teltonika’s networking solutions business unit develops and manufactures industrial and enterprise connectivity equipment, primarily routers, switches, gateways, and modems. Our networking devices serve clients in the most complex areas of Industry 4.0, Smart City, and Green Energy. For more details please refer to the company site: https://www.teltonika-networks.com/products In this role, you will: Design, implement, maintain embedded Linux software of IoT devices. Develop and maintain our own API framework that is being used by other R&D teams. Analyse and implement new technologies. Collaborate with international team and solve complex problems. What we expect from you: 1+ years of experience in C programming. 1+ years of experience working with various API's. Experience in Shell/Python scripting. Knowledge of Git version control system. Knowledge of Linux based systems. Good written and verbal English skills. Ideally, you’ll also have: Technical education. Knowledge of computer networks. Experience in Lua programming. Experience of working with OpenWrt. What we offer: Great opportunities to grow in a strong and rapidly expanding company. Interesting and ambitious projects of industrial networking devices. Private medical care (Medicover Premium) and Multisport card. Hybrid working model, with arrangements agreed in advance with the line manager. Additional day off for your birthday. Team building activities.

🏢 Summary: Tech Lead / Senior Embedded Linux Software Engineer role focused on developing and maintaining software for embedded and bare-metal networking devices. The position involves solving complex cross-layer software and hardware issues, working closely with embedded systems, and leading technical initiatives within industrial connectivity projects. 🗂️ Requirements: 7+ years experience with embedded software development, 5+ years experience in C programming, 2+ years experience with Linux OS (Buildroot or Yocto), Strong knowledge of embedded Linux systems, Experience solving complex software and hardware issues, Understanding of operating system principles, Knowledge of computer networks, Experience with embedded processors (SoCs or microcontrollers), Experience with Linux drivers and bootloaders, Experience with hardware interfaces (UART, SPI, I2C, USB) 📃 Skills: C, Linux, Buildroot, Yocto, Embedded, BareMetal, Networking, UART, SPI, I2C, USB, WiFi, Bluetooth, OpenWRT, Shell, Drivers, Bootloaders, SoC, Microcontrollers, Cybersecurity 🏢 Description: We are looking for a Tech Lead / Senior Embedded Linux Software Engineer to join our developers' team in Warsaw, Poland. You will work with the leading networking solutions in the world and master your skills. Teltonika’s Networking Solutions business unit develops and manufactures industrial and enterprise connectivity equipment, primarily routers, switches, gateways, and modems. Our networking devices serve clients in the most complex areas of Industry 4.0, Smart City, and Green Energy. For more details please refer to the company site: https://www.teltonika-networks.com/products In this role, you will: Develop software for bare metal or embedded Linux devices. Solve complex technical problems across software and hardware layers. Analyze and apply new technologies. Work closely with hardware components and embedded systems. Collaborate effectively in a team locally and in the head quarter in Lithuania. Provide technical support to team members. What we expect of you: 7+ year of experience working with software for embedded devices (advantage if the device(s) are Linux-based). 5+ years of C programming experience; (come together with embedded skills). 2+ years experience working with Linux OS (Buildroot/Yocto). Experience solving complex software and hardware-related issues. Understanding of operating system principles. Knowledge of computer networks. Ideally, you’ll also have: Experience working with various embedded processors (SOCs/microcontrollers). Knowledge of electronics and experience with lab equipment (oscilloscope, logic analyzer, etc.). Shell programming experience. Experience with UART, SPI, I2C, USB. Experience with WiFi, Bluetooth. Experience with Linux drivers, bootloaders. Experience with OpenWRT operating system. Knowledge of cybersecurity. Good English language skills. What we offer: Great opportunities to grow in a strong and rapidly expanding company. Interesting and ambitious projects of industrial networking devices. Private medical care (Medicover Premium) and Multisport card. Hybrid working model, with arrangements agreed in advance with the line manager. Additional day off for your birthday. Team building activities.

🏢 Summary: Mid-level Front-end Software Engineer role focused on building scalable, high-traffic web solutions for a large e-commerce platform. The position involves delivering medium to high complexity features, translating product and UX requirements into maintainable code, and contributing to front-end architecture decisions. This is a contractor role with high ownership in a product-driven environment. 🗂️ Requirements: Minimum 10+ years of experience as a Front-end Software Engineer, Strong knowledge of HTML, Strong knowledge of CSS, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Practical experience with React, Ability to develop scalable and maintainable front-end architecture, Experience ensuring code quality, performance, and accessibility, Experience working in cross-functional product teams, Ability to work independently and take technical ownership 📃 Skills: HTML, CSS, JavaScript, TypeScript, React, Accessibility, Performance, Architecture 🏢 Description: For our Client – one of the largest and most recognizable e-commerce platforms in Central Europe, serving millions of users daily and building large-scale, high-traffic digital products – we are currently looking for a Front-end Software Engineer (Mid-level) to join a product-driven environment focused on delivering high-quality, scalable web solutions. 📍 Warsaw - once per 2-3 weeks in the office only 🎯 Your Responsibilities Deliver medium to high complexity front-end features independently Translate product and UX requirements into clean, scalable, maintainable code Collaborate closely with Product Managers and UX/UI Designers Ensure high standards of code quality, performance, and accessibility Take ownership of delivered solutions in a contractor model (high autonomy expected) Contribute to team-level technical decisions and front-end architecture discussions Identify and address front-end technical debt 🔧 Required Experience & Skills Min 10 + years of experiance as a Front-end Software Engineer Solid understanding of HTML, CSS, JavaScript, and TypeScript fundamentals Practical experience with React (preferably with TypeScript) Ability to work independently and take accountability for outcomes Experience collaborating in cross-functional teams ⭐ Nice to Have Experience working on large-scale web applications Experience with cross-team front-end integrations Familiarity with design systems and component libraries Interest in scalable testing practices 🌍 What You Can Expect Long-term cooperation in a contractor model High-impact product environment with millions of end users Real ownership over features and technical solutions Modern engineering standards and strong product culture Occasional on-site workshops and team events 📍 Please note that we will contact only selected candidates. TQLO Sp. z o.o. – Employment Agency (KRAZ No. 33580)

🏢 Summary: Mid-level Front-end Software Engineer role focused on building scalable, high-quality web features for a large-scale, high-traffic e-commerce platform. The position involves translating product and UX requirements into maintainable React-based solutions while ensuring performance, accessibility, and code quality. The role offers high autonomy and ownership in a contractor model within a product-driven environment. 🗂️ Requirements: 10+ years of experience as Front-end Software Engineer, Strong knowledge of HTML, Strong knowledge of CSS, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Practical experience with React, Ability to deliver medium to high complexity front-end features independently, Experience working in cross-functional teams, Ability to ensure code quality, performance and accessibility standards 📃 Skills: HTML, CSS, JavaScript, TypeScript, React, Accessibility, Performance 🏢 Description: For our Client – one of the largest and most recognizable e-commerce platforms in Central Europe, serving millions of users daily and building large-scale, high-traffic digital products – we are currently looking for a Front-end Software Engineer (Mid-level) to join a product-driven environment focused on delivering high-quality, scalable web solutions. 📍 Warsaw - once per 2-3 weeks in the office only 🎯 Your Responsibilities Deliver medium to high complexity front-end features independently Translate product and UX requirements into clean, scalable, maintainable code Collaborate closely with Product Managers and UX/UI Designers Ensure high standards of code quality, performance, and accessibility Take ownership of delivered solutions in a contractor model (high autonomy expected) Contribute to team-level technical decisions and front-end architecture discussions Identify and address front-end technical debt 🔧 Required Experience & Skills Min 10 + years of experiance as a Front-end Software Engineer Solid understanding of HTML, CSS, JavaScript, and TypeScript fundamentals Practical experience with React (preferably with TypeScript) Ability to work independently and take accountability for outcomes Experience collaborating in cross-functional teams ⭐ Nice to Have Experience working on large-scale web applications Experience with cross-team front-end integrations Familiarity with design systems and component libraries Interest in scalable testing practices 🌍 What You Can Expect Long-term cooperation in a contractor model High-impact product environment with millions of end users Real ownership over features and technical solutions Modern engineering standards and strong product culture Occasional on-site workshops and team events 📍 Please note that we will contact only selected candidates. TQLO Sp. z o.o. – Employment Agency (KRAZ No. 33580)

🏢 Summary: Engineering Team Lead role focused on designing, implementing, and maintaining embedded Linux and backend software for IoT devices while actively contributing to production code. The position combines technical leadership, architectural decision-making, and hands-on development in C-based environments, with responsibility for device communication and cloud integration. The role also involves mentoring a team, ensuring code quality, and collaborating with stakeholders and customers on technical solutions. 🗂️ Requirements: Experience with C programming, Experience with Linux-based or embedded Linux systems, Experience with IoT or embedded systems, Experience with cloud platforms such as Azure or AWS, Ability to design and maintain embedded/backend software, Experience with device communication and system integration, Leadership experience in technical teams, Ability to define architecture and coding standards 📃 Skills: C, Linux, Embedded, IoT, Shell, Lua, Azure, AWS, RutOS 🏢 Description: Teltonika has been creating IoT solutions for over 25 years, with offices in over 26 countries and more than 2,500 employees worldwide. Our expertise spans networking solutions, telematics, telemedicine, EV charging, and electronics manufacturing. Teltonika’s technologies are widely used across diverse industries, including Green Energy, Smart Cities, Industry 4.0, and more. Currently, we are inviting an ambitious Engineering Team Lead to join and co-create our new R&D Team in Poland to help us grow our global presence in the IoT sector by quickly and effectively responding to changing market needs and offering reliable, safe, and easy-to-use solutions. We are an open-minded, curious, and innovation-driven company and are ready to offer the best environment for creative and ambitious professionals who are eager to contribute to the development and success of Teltonika Networks. If you are curious, creative, analytical, and willing to work in a rapidly changing environment, then we are on the same path! In this role you will: Design, implement, and maintain embedded Linux / backend software for IoT devices Actively write production code (C, Shell, Lua) Work mainly with device communication integration with 3rd-party platforms, devices, and other internal RutOS applications Review code, define coding standards, and ensure high code quality Make architectural decisions and guide the technical direction Solve complex technical problems together with the team Lead and mentor a team of Embedded Linux application layer developers Define project scope, goals, and deliverables in collaboration with senior management and other teams Identify potential project risks and implement mitigation strategies to minimize impact Prepare regular reports for senior management on project progress, team performance, and technical issues Engage with customers to gather requirements, provide technical expertise, and ensure customer satisfaction Lead efforts to improve development processes, boost system performance, and enhance product quality What we expect of you: Experience with C programming Experience working with Linux-based systems / embedded Linux Experience working with IoT or embedded systems Strong leadership and communication skills, with the ability to inspire, motivate, and develop a high-performing team Experience working with major cloud platforms (e.g., Azure, AWS ) Ability to explain technical concepts to non-technical people Passion for mentoring and developing team members What we offer: Benefit package consisting of unlimited commissions , based on your performance Private medical care (Medicover Premium) and Multisport card Internal training for your successful start Onboarding on Teltonika’s internal systems, sales processes, and product-related topics, providing constant materials, progress check-up tests, and continuous feedback to help unlock more of your potential Unique opportunities to grow professionally as part of a challenging and high-growth environment Additional day off for your birthday Team-building activities Salary We appreciate everyone's efforts and experience, so we offer an attractive base salary that will match your skillset and expertise in the field.

🏢 Summary: Opportunity for Mid and Senior Software Engineers to design and build high-performance, scalable backend systems powering global content delivery. The role focuses on event-driven, distributed architectures, technical leadership, and ownership of reliability and scalability for systems used by millions of users. It combines hands-on development with architectural decision-making in a cloud-native environment. 🗂️ Requirements: 4+ years (Mid) or 6+ years (Senior) experience in building scalable backend systems, Proficiency in Kotlin, Python or similar backend language, Experience with modern backend frameworks such as Spring Boot, Experience with relational databases (PostgreSQL or MySQL), Experience with NoSQL databases (DynamoDB or MongoDB), Hands-on experience with microservices architecture, Experience with event-driven systems, Experience with Kafka or similar streaming platform, Experience in API design (REST, gRPC or GraphQL), Hands-on experience with AWS services, Experience with Docker and Kubernetes, Experience with CI/CD pipelines and DevOps practices, Experience with monitoring and observability tools, Production support and incident management experience in distributed systems 📃 Skills: Kotlin, Python, Java, Go, TypeScript, JavaScript, Spring, REST, gRPC, GraphQL, Kafka, Redis, PostgreSQL, MySQL, DynamoDB, MongoDB, AWS, Docker, Kubernetes, Terraform, GitHub, Jenkins, Datadog, Sentry 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior and Mid Software Engineers to join the Content Cloud team . In this role, you will design and build high-performance backend systems that power content delivery across a global platform. You will act as a technical leader within the team, driving architectural decisions, mentoring engineers, and ensuring the reliability and scalability of systems used by millions of users. This is a hands-on role with strong ownership and impact on distributed, event-driven systems at scale. Key takeaways: Stack : Kotlin (main codebase) We're open to: Java/Go/TypeScript/JavaScript, Other tools: REST/gRPC/GraphQL, Kafka, Redis, PostgreSQL/MySQL, DynamoDB/MongoDB, AWS, Docker, Kubernetes Salary : Mid : 21 000 PLN - 23 000 PLN gross on the Contract of Employment Senior: 23 000 PLN - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location : ul. Grzybowska 60, Warsaw Recruitment process : A call with MOTIFE Recruiter Coding interview Panel interviews with the team (coding, architecture, and cross-collaboration interviews, Hiring Manager meeting) Responsibilities: Backend Architecture & Scalability Design and build high-performance, scalable backend services and APIs supporting global content delivery Architect event-driven systems and microservices handling large-scale traffic and real-time interactions Drive system design decisions with a focus on reliability, performance, and security Technical Leadership Lead technical discussions, architecture reviews, and design decisions across teams Define and promote reusable patterns, components, and engineering standards Mentor engineers through code reviews, pair programming, and technical guidance Performance & Reliability Identify system bottlenecks using monitoring, tracing, and load testing tools Optimize performance through data modeling, caching strategies, and query improvements Engineering Excellence Champion best practices including CI/CD, automated testing, observability, and infrastructure as code Maintain high standards for code quality, scalability, and maintainability Continuously improve development processes and system architecture Cross-Functional Collaboration Partner closely with Product, Design, and QA to deliver impactful features Translate business requirements into scalable technical solutions Act as a domain expert within the team and contribute to platform-wide initiatives Requirements: Technical Expertise 6+ years of experience building high-performance, scalable backend systems as Senior/4+ years of experience as a Mid Engineer Strong proficiency in Kotlin, Python, or similar backend languages Experience with modern backend frameworks (e.g., Spring Boot or Python-based frameworks) Strong experience with both relational (PostgreSQL, MySQL) and NoSQL databases (DynamoDB, MongoDB) Hands-on experience with microservices and event-driven architectures Experience with distributed streaming platforms such as Kafka Solid understanding of API design (REST, gRPC, or GraphQL) Cloud & Infrastructure Hands-on experience with AWS services (e.g., S3, DynamoDB, Lambda, SQS, IAM) Experience with Docker and Kubernetes Familiarity with infrastructure and deployment tooling (e.g., Terraform, GitHub Actions, Jenkins) Experience with caching systems such as Redis or Memcached Engineering Practices Strong understanding of CI/CD, DevOps, and Agile methodologies Experience with observability and monitoring tools (e.g., Datadog, Sentry) Proven experience in production support and incident management in distributed systems What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro Apply now If this sounds like your next step, we’d love to hear from you! Please apply via our careers page and submit your CV in English.

🏢 Summary: Mid and Senior Software Engineers are sought to design and build high-performance backend systems powering global content delivery on a large-scale fitness platform. The role focuses on event-driven microservices, architectural leadership, and ensuring reliability, scalability, and performance for systems used by millions of users. This is a hands-on position with strong ownership in distributed systems operating at scale. 🗂️ Requirements: 4+ years backend experience (Mid) or 6+ years (Senior), Proficiency in Kotlin or Python, Experience with Spring Boot or Python frameworks, Experience with PostgreSQL or MySQL, Experience with DynamoDB or MongoDB, Experience with microservices architecture, Experience with event-driven systems, Experience with Kafka, Knowledge of REST, gRPC, or GraphQL APIs, Experience with AWS services, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Experience with Redis or Memcached, Experience with monitoring and observability tools, Production support and incident management experience 📃 Skills: Kotlin, Python, Java, Go, TypeScript, JavaScript, Spring, REST, gRPC, GraphQL, Kafka, Redis, PostgreSQL, MySQL, DynamoDB, MongoDB, AWS, S3, Lambda, SQS, IAM, Docker, Kubernetes, Terraform, GitHubActions, Jenkins, Datadog, Sentry 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior and Mid Software Engineers to join the Content Cloud team . In this role, you will design and build high-performance backend systems that power content delivery across a global platform. You will act as a technical leader within the team, driving architectural decisions, mentoring engineers, and ensuring the reliability and scalability of systems used by millions of users. This is a hands-on role with strong ownership and impact on distributed, event-driven systems at scale. Key takeaways: Stack : Kotlin (main codebase) We're open to: Java/Go/TypeScript/JavaScript, Other tools: REST/gRPC/GraphQL, Kafka, Redis, PostgreSQL/MySQL, DynamoDB/MongoDB, AWS, Docker, Kubernetes Salary : Mid : 21 000 PLN - 23 000 PLN gross on the Contract of Employment Senior: 23 000 PLN - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location : ul. Grzybowska 60, Warsaw Recruitment process : A call with MOTIFE Recruiter Coding interview Panel interviews with the team (coding, architecture, and cross-collaboration interviews, Hiring Manager meeting) Responsibilities: Backend Architecture & Scalability Design and build high-performance, scalable backend services and APIs supporting global content delivery Architect event-driven systems and microservices handling large-scale traffic and real-time interactions Drive system design decisions with a focus on reliability, performance, and security Technical Leadership Lead technical discussions, architecture reviews, and design decisions across teams Define and promote reusable patterns, components, and engineering standards Mentor engineers through code reviews, pair programming, and technical guidance Performance & Reliability Identify system bottlenecks using monitoring, tracing, and load testing tools Optimize performance through data modeling, caching strategies, and query improvements Engineering Excellence Champion best practices including CI/CD, automated testing, observability, and infrastructure as code Maintain high standards for code quality, scalability, and maintainability Continuously improve development processes and system architecture Cross-Functional Collaboration Partner closely with Product, Design, and QA to deliver impactful features Translate business requirements into scalable technical solutions Act as a domain expert within the team and contribute to platform-wide initiatives Requirements: Technical Expertise 6+ years of experience building high-performance, scalable backend systems as Senior/4+ years of experience as a Mid Engineer Strong proficiency in Kotlin, Python, or similar backend languages Experience with modern backend frameworks (e.g., Spring Boot or Python-based frameworks) Strong experience with both relational (PostgreSQL, MySQL) and NoSQL databases (DynamoDB, MongoDB) Hands-on experience with microservices and event-driven architectures Experience with distributed streaming platforms such as Kafka Solid understanding of API design (REST, gRPC, or GraphQL) Cloud & Infrastructure Hands-on experience with AWS services (e.g., S3, DynamoDB, Lambda, SQS, IAM) Experience with Docker and Kubernetes Familiarity with infrastructure and deployment tooling (e.g., Terraform, GitHub Actions, Jenkins) Experience with caching systems such as Redis or Memcached Engineering Practices Strong understanding of CI/CD, DevOps, and Agile methodologies Experience with observability and monitoring tools (e.g., Datadog, Sentry) Proven experience in production support and incident management in distributed systems What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro Apply now If this sounds like your next step, we’d love to hear from you! Please apply via our careers page and submit your CV in English.

🏢 Summary: Senior and Mid Software Engineers to design and build high-performance, scalable backend systems powering global content delivery on a distributed, event-driven platform. The role combines hands-on development with architectural ownership, focusing on reliability, scalability, and performance at scale. Engineers contribute to microservices architecture, streaming systems, and cloud-native infrastructure in a hybrid work model. 🗂️ Requirements: 6+ years (Senior) or 4+ years (Mid) experience in scalable backend development, Proficiency in Kotlin, Python or similar backend language, Experience with Spring Boot or Python-based frameworks, Experience with relational databases (PostgreSQL or MySQL), Experience with NoSQL databases (DynamoDB or MongoDB), Hands-on experience with microservices architecture, Experience with event-driven systems, Experience with Kafka or other streaming platforms, Strong knowledge of REST, gRPC or GraphQL APIs, Experience with AWS services, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Experience with caching systems (Redis or Memcached), Experience with observability and monitoring tools, Production support experience in distributed systems 📃 Skills: Kotlin, Python, Java, Go, TypeScript, JavaScript, SpringBoot, PostgreSQL, MySQL, DynamoDB, MongoDB, Kafka, REST, gRPC, GraphQL, AWS, S3, Lambda, SQS, IAM, Docker, Kubernetes, Terraform, GitHubActions, Jenkins, Redis, Memcached, Datadog, Sentry, CI/CD 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior and Mid Software Engineers to join the Content Cloud team . In this role, you will design and build high-performance backend systems that power content delivery across a global platform. You will act as a technical leader within the team, driving architectural decisions, mentoring engineers, and ensuring the reliability and scalability of systems used by millions of users. This is a hands-on role with strong ownership and impact on distributed, event-driven systems at scale. Key takeaways: Stack : Kotlin (main codebase) We're open to: Java/Go/TypeScript/JavaScript, Other tools: REST/gRPC/GraphQL, Kafka, Redis, PostgreSQL/MySQL, DynamoDB/MongoDB, AWS, Docker, Kubernetes Salary : Mid : 21 000 PLN - 23 000 PLN gross on the Contract of Employment Senior: 23 000 PLN - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location : ul. Grzybowska 60, Warsaw Recruitment process : A call with MOTIFE Recruiter Coding interview Panel interviews with the team (coding, architecture, and cross-collaboration interviews, Hiring Manager meeting) Responsibilities: Backend Architecture & Scalability Design and build high-performance, scalable backend services and APIs supporting global content delivery Architect event-driven systems and microservices handling large-scale traffic and real-time interactions Drive system design decisions with a focus on reliability, performance, and security Technical Leadership Lead technical discussions, architecture reviews, and design decisions across teams Define and promote reusable patterns, components, and engineering standards Mentor engineers through code reviews, pair programming, and technical guidance Performance & Reliability Identify system bottlenecks using monitoring, tracing, and load testing tools Optimize performance through data modeling, caching strategies, and query improvements Engineering Excellence Champion best practices including CI/CD, automated testing, observability, and infrastructure as code Maintain high standards for code quality, scalability, and maintainability Continuously improve development processes and system architecture Cross-Functional Collaboration Partner closely with Product, Design, and QA to deliver impactful features Translate business requirements into scalable technical solutions Act as a domain expert within the team and contribute to platform-wide initiatives Requirements: Technical Expertise 6+ years of experience building high-performance, scalable backend systems as Senior/4+ years of experience as a Mid Engineer Strong proficiency in Kotlin, Python, or similar backend languages Experience with modern backend frameworks (e.g., Spring Boot or Python-based frameworks) Strong experience with both relational (PostgreSQL, MySQL) and NoSQL databases (DynamoDB, MongoDB) Hands-on experience with microservices and event-driven architectures Experience with distributed streaming platforms such as Kafka Solid understanding of API design (REST, gRPC, or GraphQL) Cloud & Infrastructure Hands-on experience with AWS services (e.g., S3, DynamoDB, Lambda, SQS, IAM) Experience with Docker and Kubernetes Familiarity with infrastructure and deployment tooling (e.g., Terraform, GitHub Actions, Jenkins) Experience with caching systems such as Redis or Memcached Engineering Practices Strong understanding of CI/CD, DevOps, and Agile methodologies Experience with observability and monitoring tools (e.g., Datadog, Sentry) Proven experience in production support and incident management in distributed systems What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro Apply now If this sounds like your next step, we’d love to hear from you! Please apply via our careers page and submit your CV in English.

🏢 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: Backend Software Engineer role focused on developing and maintaining a scalable, microservices-based IoT device management platform, building core backend services and ensuring performance, security, and reliability in cloud-native environments. 🗂️ 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 (MongoDB, Redis), Ability to write clean, maintainable, production-grade backend code, Basic understanding of cloud-native environments (containers, CI/CD, Kubernetes), English B2+, Polish C2 📃 Skills: Java, Scala, MongoDB, Redis, Kubernetes, CI/CD, REST, Microservices, IoT, JVM, Containers, Cloud 🏢 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