Node.js Backend Developer

🏢 Summary: On-site Senior Backend Engineer role focused on designing and building scalable, high-performance backend services within a microservices architecture for a K–12 EdTech platform. The position involves working with modern TypeScript-based technologies, handling integrations, and contributing to both greenfield and legacy systems. You will take ownership of solutions from design through deployment while collaborating closely with cross-functional teams. 🗂️ Requirements: 5+ years of backend development experience, Strong experience with TypeScript and Node.js, Experience designing scalable systems and making architectural decisions, Experience working with microservices architecture, Experience with databases such as MongoDB, Ability to work with cloud infrastructure (AWS), Experience with messaging systems, Fluent English, Availability to work on-site 4 days per week 📃 Skills: TypeScript, Node.js, NestJS, MongoDB, Redis, RabbitMQ, AWS, Microservices 🏢 Description: Magma Math , is a K–12 platform that helps teachers make smarter instructional decisions and encourages deeper student-driven discussions and collaboration around math. We're a fast-growing, well-funded company in the top tier of European EdTech — backed by $40M Series A and growing like crazy. But we're keeping it lean, smart, and fun — without the corporate fluff. Our work has a real impact : we’re helping students around the world get better at math, and we're recognized by education experts for improving how math is taught and learned. We're based in Warsaw , but our team spans New York 🗽, Stockholm 🇸🇪, and London 🇬🇧 — and you’ll have chances to meet everyone in person! On-site role : We expect candidates to work from office 4 days a week. 🧠 What you’ll work with TypeScript, Node.js, NestJS MongoDB, Redis, RabbitMQ AWS and microservices Lots of integrations (we do that a lot) Mix of greenfield and legacy systems (nothing scary) ✨ What you'll do Contribute to the design and implementation of scalable, high-performance backend services Work within our microservices architecture , handling both maintenance and greenfield projects Optimize, maintain, and continuously improve existing systems while building new features Take ownership of the solutions you create, from concept through deployment and ongoing maintenance Collaborate with PMs, QAs, and other developers to create the best experience for our users 🔍 What we’re looking for 5+ years experience with a history of impactful contributions Strong problem-solving skills and a passion for writing clean, efficient code Proficiency in system design and making architectural decisions A proactive attitude, with the ability to thrive in a fast-paced, growing startup environment Confident English – you can easily communicate complex technical concepts Team player – no lone wolves. You’re comfortable discussing tough problems, asking questions, and challenging ideas respectfully Critical thinking - You’re comfortable discussing tough problems and asking hard questions! ✅ What we offer Salary up to 30,000 PLN/month (+VAT) 26 days of leave covered by a yearly bonus 10 days of paid sick leave Yearly team meetups in Stockholm with all the people in company ✈️ Great Warsaw office – full floor just for us with snacks, drinks, and top-tier coffee ☕ Multisport Plus card Table football and chill board game nights with pizza & beer 🍕🍻 Occasional movie nights 🎬 We take your wellbeing very seriously 🧘‍♂️ — we want everyone to feel comfortable here 📋 Recruitment Process: 20-min intro call Technical task to do at home with a following technical interview (digital) Culture fit interview in office Interview with Product leadership (digital) 🚀 Ready to make an impact? Apply now and let's build something great together!

🏢 Summary: Long-term B2B opportunity for a senior engineer to deliver production-ready code and shape system architecture in a microservices environment. The role combines hands-on Java and React development with architectural responsibilities in a global, collaborative setup. It focuses on high-frequency delivery and technical excellence within the financial sector. 🗂️ Requirements: Strong Java experience (latest versions), Strong React experience, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Proven high-frequency code delivery, Experience in banking or financial sector 📃 Skills: Java, React, Microservices, REST, PostgreSQL, Banking, Docker, Kubernetes 🏢 Description: Working mode : Hybrid - 6 days per month at the Warsaw office Contract type : B2B, long term cooperation Rate : 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.

🏢 Summary: Remote B2B offer for a Node.js engineer to support a project involving scalable, distributed web systems and microservices. The role focuses on building high-performance applications using JavaScript/TypeScript in cloud environments with AWS and Docker. Work includes backend development, database integration, automated testing, and CI/CD processes. 🗂️ Requirements: Minimum 3 years experience in building scalable web applications, Strong knowledge of JavaScript or TypeScript, Very good knowledge of Node.js and Nest.js, Experience with distributed architecture and microservices, Good knowledge of relational databases (PostgreSQL or MySQL), Experience writing unit and integration tests (Jest or Mocha), Knowledge of CI/CD processes, Experience with AWS (S3, SQS, Lambda), Experience with Docker 📃 Skills: JavaScript, TypeScript, Node.js, Nest.js, PostgreSQL, MySQL, Jest, Mocha, AWS, S3, SQS, Lambda, Docker, CI/CD, Microservices, MVC, CQRS 🏢 Description: Kim jesteśmy? Jesteśmy firmą programistyczną specjalizującą się w tworzeniu szytych na miarę, aplikacji webowych i mobilnych. Pracujemy dla klientów z całego świata – z USA, UK, Niemiec, Holandii, Skandynawii i innych. Tworzymy systemy od prostych API opartych o kontenery, poprzez systemy złożone z mikroserwisów, kończąc na rozwiązaniach Cloud Native. A to wszystko dla klientów m.in. z branży fintech, medtech, e-commerce. Kochamy programowanie oraz JS i TS, najbardziej Reacta i Node.js! Aktualnie poszukujemy inżynierów, którzy byliby zainteresowani wsparciem jednego z naszych projektów (rekrutacja pod projekt). Wynagrodzenie: B2B : 9 500 - 16 000 zł + VAT Miejsce pracy: Współpraca 100% zdalna, bez konieczności pojawiania się w biurze! Jeśli jednak chcesz pracować z biura, mamy dwie opcje - Warszawa, ul. Złota 59 oraz Gliwice, ul. Dolnych Wałów 8. Od Ciebie oczekujemy: co najmniej 3 lat doświadczenia w budowaniu zaawansowanych, wydajnych i skalowalnych aplikacji internetowych znajomości współczesnego użycia JavaScript lub TypeScript (MVC, CQRS, dependency injection) dobrej znajomości Node.js (Nest.js) doświadczenia w pracy w architekturze rozproszonej, mikroserwisach dobrej znajomości relacyjnych baz danych (PostgreSQL / MySQL) umiejętności pisania testów jednostkowych oraz integracyjnych w jednym z popularnych frameworków (Jest, Mocha, etc.) oraz znajomości automatyzacji procesów (CI/CD) doświadczenia w pracy z AWS (S3, SQS, Lambda) umiejętności pracy z Dockerem dobrej znajomości języka angielskiego umożliwiającej swobodną komunikację w zespole międzynarodowym - warunek konieczny zaangażowania, samodzielności, proaktywności oraz odpowiedzialności za projekt dostępność do podjęcia pracy w przeciągu ok. 1 miesiąca Mile widziane: doświadczenie w wykorzystaniu w pracy narzędzi AI (Copilot, Cursor itp.) znajomość Kubernetesa i Terraforma doświadczenie w branży fintech

🏢 Summary: Remote B2B offer for a Senior Fullstack JavaScript/TypeScript Engineer to build scalable web applications in distributed, microservices and cloud-native architectures. The role involves working with React and Node.js (Nest) on international projects, covering both frontend and backend layers. The position requires strong experience with AWS, Kubernetes and modern DevOps practices. 🗂️ Requirements: Minimum 5 years of experience building scalable web applications, Strong knowledge of JavaScript or TypeScript (MVC, CQRS, dependency injection), Very good knowledge of Node.js and Nest, Very good knowledge of React, Experience with distributed architecture and microservices, Knowledge of scalable system architecture and inter-service communication, Experience with AWS (S3, SQS, Lambda), Knowledge of Kubernetes and Terraform, Very good knowledge of PostgreSQL or MySQL and SQL, Ability to write unit and integration tests (Jest, Mocha or similar), Experience with CI/CD automation, Very good English skills (B2 or higher), Availability to start within 1 month 📃 Skills: JavaScript, TypeScript, Node.js, Nest, React, AWS, S3, SQS, Lambda, Kubernetes, Terraform, PostgreSQL, MySQL, SQL, Jest, Mocha, CI/CD, Microservices, MVC, CQRS 🏢 Description: Kim jesteśmy? Jesteśmy firmą programistyczną specjalizującą się w tworzeniu szytych na miarę, aplikacji webowych i mobilnych. Pracujemy dla klientów z całego świata – z USA, UK, Niemiec, Holandii, Skandynawii i innych. Tworzymy systemy od prostych API opartych o kontenery, poprzez systemy złożone z mikroserwisów, kończąc na rozwiązaniach Cloud Native. A to wszystko dla klientów m.in. z branży fintech, medtech, e-commerce. Kochamy programowanie oraz JS i TS, najbardziej Reacta i Node.js! Aktualnie poszukujemy inżynierów, którzy byliby zainteresowani wsparciem jednego z naszych projektów (rekrutacja pod projekt). Wynagrodzenie: B2B : 17 000 - 26 000 zł + VAT Miejsce pracy: Praca 100% zdalna, bez konieczności pojawiania się w biurze! Jeśli jednak chcesz pracować z biura, mamy dwie opcje - Warszawa, ul. Złota 59 oraz Gliwice, ul. Dolnych Wałów 8 Od Ciebie oczekujemy: co najmniej 5 lat doświadczenia w budowaniu zaawansowanych, wydajnych i skalowalnych aplikacji internetowych znajomości współczesnego użycia JavaScript lub TypeScript (MVC, CQRS, dependency injection) dobrej znajomości Node.js (Nest) oraz React.js doświadczenia w pracy w architekturze rozproszonej, mikroserwisach znajomości rozwiązań architektonicznych w budowaniu wydajnych i skalowalnych aplikacji (komunikacja między serwisami, kolejki) doświadczenia w pracy z AWS (S3, SQS, Lambda) znajomości Kubernetesa i Terraforma bardzo dobrej znajomości relacyjnych baz danych (PostgreSQL / MySQL) i języka SQL, umiejętności pisania testów jednostkowych oraz integracyjnych w jednym z popularnych frameworków (Jest, Mocha, etc.) oraz znajomości automatyzacji procesów (CI/CD) dobrej znajomości języka angielskiego umożliwiającej swobodną komunikację w zespole międzynarodowym - warunek konieczny zaangażowania, proaktywności oraz odpowiedzialności za całość projektu (zarówno warstwę FE, jak i BE) dostępność do podjęcia pracy w przeciągu ok. 1 miesiąca Mile widziane: doświadczenie w wykorzystaniu w pracy narzędzi AI (Copilot, Cursor itp.) doświadczenie w branży fintech doświadczenie w Next.js znajomość Playwright znajomość frameworka Koa

🏢 Summary: Long-term B2B hybrid role focused on hands-on Java and React development within a microservices architecture, contributing directly to production code and system design. The position emphasizes high-frequency delivery, REST API development, and collaboration in a global engineering environment. It combines technical leadership with active development in financial-sector projects. 🗂️ Requirements: Strong experience with Java, Strong experience with ReactJS, Experience with microservices architecture, Experience delivering RESTful APIs, Experience with PostgreSQL, Recent experience with modern Java versions, Ability to deliver code changes frequently, Background in banking or financial sector 📃 Skills: Java, ReactJS, Microservices, REST, PostgreSQL, Docker, Kubernetes 🏢 Description: Working mode: Hybrid - 6 days per month at the Kraków office Contract type: B2B, long term cooperation Rate: 200 PLN/h Summary: This role focuses on hands-on development and system architecture, driving engineering culture, and enhancing business growth through technical expertise in a collaborative, global environment. Main Responsibilities: Deliver code to production and support system architecture aligned to microservices Understand business, engineering, and non-functional requirements Drive the desired engineering culture across teams Collaborate with a globally diverse team across regions Proactively remove impediments, assess risks, and communicate issues to program management Identify and eliminate process inefficiencies Key Requirements: Strong Java and React programming experience Experience in microservice architecture Background in the financial sector, particularly banking Proven capability of delivering code changes at high frequency Experience with RESTful API delivery Familiarity with PostgreSQL databases Recent Java experience, preferably with the latest versions Experience with ReactJS for UI application development Nice to Have: Knowledge of containers and orchestration technologies like Docker and Kubernetes. Other Details: This position offers the opportunity to work within a multi-regional team on innovative projects. Ideal for candidates seeking to leverage their development skills in a dynamic and evolving business context.

🏢 Summary: The offer is for a Project Engineer responsible for coordinating cross-functional teams to deliver AI-powered robotic systems to customers, ensuring end-to-end integration and on-time project execution. The role involves designing robotic station processes, analyzing system performance, and debugging across the full technology stack. It combines technical analysis, project delivery, and frequent collaboration with engineering teams and customer sites. 🗂️ Requirements: Experience in end-to-end project management or similar role, Experience in robotics, intralogistics, or engineering, Ability to analyze performance data and system metrics, Ability to debug complex technical systems across software and hardware, Strong knowledge of data analysis tools (Excel or Google Sheets, SQL), Understanding of full technology stack in robotics systems, Fluent English, Availability to travel up to 40% 📃 Skills: SQL, BigQuery, Grafana, Excel, GoogleSheets, Robotics, Automation, MachineLearning, DataAnalysis, Debugging, Statistics 🏢 Description: Do you love connecting teams to deliver superb value? Are you excited about the delivery of state-of-the-art solutions to customers? Would you like to help us build the AI revolution in robotics? If the answers are yes, then you should keep reading! At Nomagic, we’re on a mission to teach robots the real world. We are looking for a Project Engineer who will ensure the smooth execution of our projects by coordinating work across engineering teams. Offer essentials: Play with robots every day Salary: 24,000 - 29,000 gross UoP per month + equity Relocation package if you are willing to move to Warsaw English-speaking environment Partly remote work is possible! ~Monthly visits to customer sites across Europe Here is why we love this job ourselves, and hope you will enjoy it too: We combine world-class research with top-notch engineering and apply it to solve real problems We build robots and vision systems powered by AI We have them in production at scale and see their real impact on critical operations We are still pretty small, so everyone has a direct impact on the product and how we work Our team has built Google Warsaw, unicorn startups (Climate Corp), tested rocket engines and worked at top companies such as Nvidia or ByteDance. Now we shape the future of smart robotics together! We are scaling our team, product and operations significantly Some of the problems you may try to solve with us: Design the overall process of a robotic station Deliver robots to customers with end-to-end integration from various technical teams (Software, Machine Learning, Mechanical, Electrical, Automation, etc.) Make sure that the deadlines are respected, working with project management from the very beginning of the sales process up to the final acceptance at the customer site Understand the impact and priority of any proposed improvements Analyzes robot performance data using various tools like BigQuery, Grafana, and spreadsheets Deeply understand our technology stack, debug it, analyse system performance and propose improvements Debug issues across the whole stack and make sure they are solved by the right team What skills we’d like you to have: Highly energetic and hands-on attitude! Strive to get things done and find solutions Experience in end-to-end project management or similar role Strong organizational skills and drive to deliver great products on time in full Experience in at least one of the following: robotics industry, intralogistics or engineering experience is required Great analytical skills (Google Sheets / Excel, SQL, basic statistics) Strong decision making skills Excellent communication skills in English, French and/or German is a plus Ability to travel up to 40% (peak) of time to customer sites What should you expect once you apply? 45 minutes Hiring manager Interview 45-minute Data Analytics Interview Onsites - half a day of interviews & discussions at the office Reference check

🏢 Summary: Backend engineering role in the Advertising team focused on building and operating high-performance, cloud-native microservices and ML infrastructure at massive scale. The position involves designing distributed systems, data streaming solutions, and end-to-end ML serving pipelines in a real-time marketplace environment. Engineers own services end-to-end, from design to deployment, within a modern Kotlin-based tech stack. 🗂️ Requirements: Proficiency in Kotlin or Java, Experience building high-performance, high-availability backend systems, Experience with distributed systems and microservices architecture, Experience with data streaming systems, Experience with cloud-native environments, Ability to design and deploy ML serving infrastructure, English at B2 level or higher 📃 Skills: Kotlin, Java, Spring, Kafka, Kubernetes, BigQuery, Spark, Docker, Consul, GitHub, GitHubActions, ML 🏢 Description: Important things for you Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN 11 200 - 15 250 Annual bonus based on your annual performance and company results. Our team is based in Warsaw. About the job Massive Scale : Design, build, and optimize systems that handle thousands of requests per minute. This is high-availability, high-performance engineering in practice. Modern Tech Stack : Work with a world-class, cloud-native environment. Our core technologies include Kotlin, Spring, Kafka, and Kubernetes. We're not shy when it comes to ML too :) True Ownership & Autonomy : We live by a "you build it, you run it" philosophy. You'll join an agile, autonomous team with full ownership of your microservices, from design to deployment. Complex Challenges : From distributed systems and data streaming to algorithmic optimization, you'll tackle the complex backend problems that power a massive, real-time marketplace. End-to-End ML Systems: Bridge the gap between big data and real-time product impact. You’ll build the infrastructure for serving ML models , using BigQuery and Apache Spark for offline data processing. You’ll integrate these components with our microservices architecture to create the sophisticated advertising system that powers a personalized user experience. Join the Advertising team! You will have a chance to build Allegro Ads - one of the most visible products on the platform. Your team works closely with the Machine Learning team, creating the best experience for customers. High performance, engineering best practices and great atmosphere in the team guaranteed! We are looking for people who: Code in Kotlin or Java and are eager to master Kotlin by taking part greenfield project Want to be proud of the code they create ; they value high-quality code reviews and engage in substantive discussions on software engineering best practices; Are excited about building new products and want to experience the journey of launching a fresh project within the Allegro ecosystem; Are open to developing soft skills and embracing a growth mindset through active participation in code reviews, pair programming, and team retrospectives.; Are open to incorporating AI coding assistants into their daily work to maximize efficiency and focus on complex problem-solving Can look for effective solutions to the requirements set by users; Want to constantly develop and update their knowledge; Know English at at least B2 level. What's in it for you: Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism ( see more here ), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here . #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale , which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!

🏢 Summary: Full-stack developer role in a Scrum team building a unified One Account platform, working on backend services, frontend components, and large-scale data processing within a microservices ecosystem. The position focuses on developing scalable solutions using modern infrastructure and AI-driven tools in a high-scale production environment. 🗂️ Requirements: Proficiency in Java and/or Kotlin, Experience with backend and frontend development, Experience working in Scrum, Ability to design scalable microservices, Experience with large-scale data processing, Willingness to use AI-driven development tools, English B2+ level, Availability for quarterly travel between Warsaw and Poznań 📃 Skills: Java, Kotlin, Scrum, Microservices, Kubernetes, Docker, Consul, GitHub, GitHubActions, Hermes, ServiceMesh, AI, MacOS, Windows 🏢 Description: Important things for you: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN PLN 14 600 - 20 825 Annual bonus based on your annual performance and company results. Our team is based in Warsaw. About the job Allegro’s development teams boast more than 1700 IT experts solving problems at a unique scale and complexity. However, if you join us, you’ll be joining a specific team that operates like a small, agile startup within our large organization. Based mostly in Warsaw, our team consists of six skilled developers and a dedicated Product Manager. We work in a mature Scrum environment, leveraging Allegro’s world-class infrastructure and cutting-edge development standards to ensure high-velocity, high-quality delivery. We are a full-stack team handling everything from our UI frontend and backend services to large-scale data processing. You'll be joining a group with varied experience levels, offering a great environment to both learn and make a significant impact. Our team culture is defined by a forward-thinking mindset; we deeply integrate AI-driven tools into our daily workflows and development processes to optimize productivity and innovation. By combining agile methodologies with the latest technological advancements, we maintain a sharp focus on building a scalable, future-proof platform for the entire Allegro ecosystem. The main area which the team is focused on is The One Account initiative - a strategic transformation of Allegro’s ecosystem, migrating from a fragmented, account-centric legacy architecture to a unified, company-level platform We are looking for people who: Code in Java and / or Kotlin Expect work that has a deeper meaning (not only tasks "management has commissioned") and want to enjoy its results Want to be proud of the code they create. They eagerly accept comments and share knowledge during code reviews Can look for effective solutions that solve business and technical challenges Want to constantly develop and update their knowledge Are not afraid to occasionally develop frontend part of solution Can travel between Warsaw and Poznań once a quarter for team workshops Know English at B2+ level What’s in it for you: Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism ( see more here ), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here . #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale , which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!

🏢 Summary: Full-stack developer role in a Scrum team building and migrating Allegro’s platform to a unified One Account architecture. The position involves developing backend services and frontend components at large scale using modern infrastructure and AI-driven tools. You will work on high-traffic microservices and data-intensive systems within a mature DevOps environment. 🗂️ Requirements: Proficiency in Java and/or Kotlin, Experience in backend service development, Ability to work with frontend technologies, Experience in Scrum/Agile environment, Knowledge of microservices architecture, Familiarity with containerization and orchestration, Experience with version control and CI/CD tools, English level B2+ 📃 Skills: Java, Kotlin, JavaScript, Kubernetes, Docker, Consul, GitHub, GitHubActions, Scrum, Microservices, AI 🏢 Description: Important things for you: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN PLN 14 600 - 20 825 Annual bonus based on your annual performance and company results. Our team is based in Warsaw. About the job Allegro’s development teams boast more than 1700 IT experts solving problems at a unique scale and complexity. However, if you join us, you’ll be joining a specific team that operates like a small, agile startup within our large organization. Based mostly in Warsaw, our team consists of six skilled developers and a dedicated Product Manager. We work in a mature Scrum environment, leveraging Allegro’s world-class infrastructure and cutting-edge development standards to ensure high-velocity, high-quality delivery. We are a full-stack team handling everything from our UI frontend and backend services to large-scale data processing. You'll be joining a group with varied experience levels, offering a great environment to both learn and make a significant impact. Our team culture is defined by a forward-thinking mindset; we deeply integrate AI-driven tools into our daily workflows and development processes to optimize productivity and innovation. By combining agile methodologies with the latest technological advancements, we maintain a sharp focus on building a scalable, future-proof platform for the entire Allegro ecosystem. The main area which the team is focused on is The One Account initiative - a strategic transformation of Allegro’s ecosystem, migrating from a fragmented, account-centric legacy architecture to a unified, company-level platform We are looking for people who: Code in Java and / or Kotlin Expect work that has a deeper meaning (not only tasks "management has commissioned") and want to enjoy its results Want to be proud of the code they create. They eagerly accept comments and share knowledge during code reviews Can look for effective solutions that solve business and technical challenges Want to constantly develop and update their knowledge Are not afraid to occasionally develop frontend part of solution Can travel between Warsaw and Poznań once a quarter for team workshops Know English at B2+ level What’s in it for you: Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism ( see more here ), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here . #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale , which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!

🏢 Summary: Full-stack developer role in a Scrum team working on the strategic One Account initiative, transforming a legacy architecture into a unified, scalable platform. The position involves developing backend services and frontend components using Java and/or Kotlin within a large-scale microservices ecosystem. The offer includes a hybrid work model (4/1), flexible hours, competitive salary, annual bonus, and extensive development opportunities. 🗂️ Requirements: Proficiency in Java and/or Kotlin, Willingness to work in a full-stack role including frontend tasks, Experience working in Agile/Scrum environment, Ability to design effective technical solutions for business problems, Openness to code reviews and knowledge sharing, Continuous learning and self-development mindset, English level B2+, Availability to travel between Warsaw and Poznań once a quarter 📃 Skills: Java, Kotlin, Scrum, Kubernetes, Docker, Consul, GitHub, GitHubActions, Microservices, ServiceMesh, Hermes, AI 🏢 Description: Important things for you: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work. The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): PLN PLN 14 600 - 20 825 Annual bonus based on your annual performance and company results. Our team is based in Warsaw. About the job Allegro’s development teams boast more than 1700 IT experts solving problems at a unique scale and complexity. However, if you join us, you’ll be joining a specific team that operates like a small, agile startup within our large organization. Based mostly in Warsaw, our team consists of six skilled developers and a dedicated Product Manager. We work in a mature Scrum environment, leveraging Allegro’s world-class infrastructure and cutting-edge development standards to ensure high-velocity, high-quality delivery. We are a full-stack team handling everything from our UI frontend and backend services to large-scale data processing. You'll be joining a group with varied experience levels, offering a great environment to both learn and make a significant impact. Our team culture is defined by a forward-thinking mindset; we deeply integrate AI-driven tools into our daily workflows and development processes to optimize productivity and innovation. By combining agile methodologies with the latest technological advancements, we maintain a sharp focus on building a scalable, future-proof platform for the entire Allegro ecosystem. The main area which the team is focused on is The One Account initiative - a strategic transformation of Allegro’s ecosystem, migrating from a fragmented, account-centric legacy architecture to a unified, company-level platform We are looking for people who: Code in Java and / or Kotlin Expect work that has a deeper meaning (not only tasks "management has commissioned") and want to enjoy its results Want to be proud of the code they create. They eagerly accept comments and share knowledge during code reviews Can look for effective solutions that solve business and technical challenges Want to constantly develop and update their knowledge Are not afraid to occasionally develop frontend part of solution Can travel between Warsaw and Poznań once a quarter for team workshops Know English at B2+ level What’s in it for you: Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms). A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories. A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers). English classes that we pay for related to the specific nature of your job. A training budget, inter-team tourism ( see more here ), hackathons, and an internal learning platform where you will find multiple trainings. An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal. Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy. And that's just the beginning! You can read more about the benefits here . #goodtobehere means that: You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA. You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things. You get to choose which technology solves the problem and you are responsible for what you create. You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job. You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support). You will create solutions that will be used (and loved!) by your friends, family and millions of our customers. You will meet the Allegro Scale , which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning. You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about! Send us your CV and… see you at Allegro!