Backend (Node.js) Developer

🏢 Summary: Lead the development of a high-load iGaming platform as a Tech/Team Lead Node.js Developer, driving architecture, integrations and new feature delivery. The role focuses on building scalable microservices, APIs and database solutions while collaborating with cross-functional teams. Fully remote work from Poland is possible. 🗂️ Requirements: Strong knowledge of JavaScript and ECMAScript 6, 3+ years commercial experience with Node.js and Nest.js, 5+ years commercial experience in web development, Proven AI experience, Hands-on experience with high-load SQL or NoSQL databases, Commercial experience implementing REST, GraphQL and WebSocket APIs, Solid understanding of TDD principles and experience writing tests, Understanding of microservice architecture principles, Practical experience with GIT, Hands-on experience with RabbitMQ and Redis, Familiarity with MongoDB and MySQL 📃 Skills: JavaScript, ECMAScript6, Node.js, Nest.js, AI, SQL, NoSQL, MongoDB, MySQL, REST, GraphQL, WebSocket, TDD, Microservices, GIT, RabbitMQ, Redis, TypeScript, Kubernetes, NATS, CI/CD 🏢 Description: We are looking for an experienced Tech/Team Lead Node.js Developer to spearhead the development of the innovative iGaming platform. Please note that fully remote work from Poland is possible. Responsibilities Build and maintain our in-house platform while ensuring scalability and reliability Design and implement integrations with third-party APIs Take an active role in developing new features from scratch by contributing ideas and technical solutions Operate with high-load SQL and NoSQL databases (MongoDB, MySQL) Implement REST, GraphQL and WebSocket APIs Write and maintain unit and integration tests following TDD principles Collaborate with cross-functional teams to define, design and ship new features Use GIT for version control and take part in code reviews Handle message brokers such as RabbitMQ and Redis Follow microservice architecture principles in system design and implementation Requirements Strong knowledge of JavaScript and ECMAScript 6 standards 3+ years of commercial experience with Node.js and Nest.js 5+ years of commercial experience in web development Proven AI experience Hands-on background in high-load SQL or NoSQL databases Commercial experience implementing REST, GraphQL and WebSocket APIs Solid understanding of TDD principles and proven experience writing tests Understanding of microservice architecture principles Practical experience with GIT version control Hands-on background with RabbitMQ and Redis Familiarity with MongoDB and MySQL databases Nice to have 2+ years of practical background in CI/CD, microservices architecture or containerization Hands-on familiarity with Kubernetes Practical exposure to the NATS messaging system Working knowledge of TypeScript We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Opportunity for an experienced Tech/Team Lead Node.js Developer to lead the development of a high-load iGaming platform, designing scalable architecture and integrating third-party services. The role involves hands-on backend development, API design, database management and microservices implementation. Fully remote work from Poland is available. 🗂️ Requirements: Strong knowledge of JavaScript and ECMAScript 6, 3+ years of commercial experience with Node.js and Nest.js, 5+ years of commercial web development experience, Proven AI experience, Experience with high-load SQL or NoSQL databases, Experience implementing REST, GraphQL and WebSocket APIs, Experience with TDD and writing unit and integration tests, Understanding of microservice architecture principles, Experience with GIT version control, Experience with RabbitMQ and Redis, Familiarity with MongoDB and MySQL 📃 Skills: JavaScript, ECMAScript6, Node.js, Nest.js, AI, SQL, NoSQL, MongoDB, MySQL, REST, GraphQL, WebSocket, TDD, GIT, RabbitMQ, Redis, Microservices 🏢 Description: We are looking for an experienced Tech/Team Lead Node.js Developer to spearhead the development of the innovative iGaming platform. Please note that fully remote work from Poland is possible. Responsibilities Build and maintain our in-house platform while ensuring scalability and reliability Design and implement integrations with third-party APIs Take an active role in developing new features from scratch by contributing ideas and technical solutions Operate with high-load SQL and NoSQL databases (MongoDB, MySQL) Implement REST, GraphQL and WebSocket APIs Write and maintain unit and integration tests following TDD principles Collaborate with cross-functional teams to define, design and ship new features Use GIT for version control and take part in code reviews Handle message brokers such as RabbitMQ and Redis Follow microservice architecture principles in system design and implementation Requirements Strong knowledge of JavaScript and ECMAScript 6 standards 3+ years of commercial experience with Node.js and Nest.js 5+ years of commercial experience in web development Proven AI experience Hands-on background in high-load SQL or NoSQL databases Commercial experience implementing REST, GraphQL and WebSocket APIs Solid understanding of TDD principles and proven experience writing tests Understanding of microservice architecture principles Practical experience with GIT version control Hands-on background with RabbitMQ and Redis Familiarity with MongoDB and MySQL databases Nice to have 2+ years of practical background in CI/CD, microservices architecture or containerization Hands-on familiarity with Kubernetes Practical exposure to the NATS messaging system Working knowledge of TypeScript We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Opportunity for an experienced Tech/Team Lead Node.js Developer to lead the development of a scalable iGaming platform, working fully remotely from Poland. The role focuses on building high-load, microservices-based systems, integrating third-party APIs, and driving new feature development from scratch. You will collaborate with cross-functional teams while ensuring code quality, reliability, and architectural excellence. 🗂️ Requirements: 3+ years commercial experience with Node.js and Nest.js, 5+ years commercial experience in web development, Strong knowledge of JavaScript and ECMAScript 6, Proven AI experience, Hands-on experience with high-load SQL or NoSQL databases, Commercial experience implementing REST, GraphQL and WebSocket APIs, Solid understanding of TDD and experience writing unit and integration tests, Understanding of microservice architecture principles, Practical experience with GIT, Hands-on experience with RabbitMQ and Redis, Familiarity with MongoDB and MySQL 📃 Skills: JavaScript, ECMAScript6, Node.js, Nest.js, AI, MongoDB, MySQL, SQL, NoSQL, REST, GraphQL, WebSocket, TDD, GIT, RabbitMQ, Redis, Microservices, CI/CD, Kubernetes, NATS, TypeScript 🏢 Description: We are looking for an experienced Tech/Team Lead Node.js Developer to spearhead the development of the innovative iGaming platform. Please note that fully remote work from Poland is possible. Responsibilities Build and maintain our in-house platform while ensuring scalability and reliability Design and implement integrations with third-party APIs Take an active role in developing new features from scratch by contributing ideas and technical solutions Operate with high-load SQL and NoSQL databases (MongoDB, MySQL) Implement REST, GraphQL and WebSocket APIs Write and maintain unit and integration tests following TDD principles Collaborate with cross-functional teams to define, design and ship new features Use GIT for version control and take part in code reviews Handle message brokers such as RabbitMQ and Redis Follow microservice architecture principles in system design and implementation Requirements Strong knowledge of JavaScript and ECMAScript 6 standards 3+ years of commercial experience with Node.js and Nest.js 5+ years of commercial experience in web development Proven AI experience Hands-on background in high-load SQL or NoSQL databases Commercial experience implementing REST, GraphQL and WebSocket APIs Solid understanding of TDD principles and proven experience writing tests Understanding of microservice architecture principles Practical experience with GIT version control Hands-on background with RabbitMQ and Redis Familiarity with MongoDB and MySQL databases Nice to have 2+ years of practical background in CI/CD, microservices architecture or containerization Hands-on familiarity with Kubernetes Practical exposure to the NATS messaging system Working knowledge of TypeScript We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Leadership role focused on building and scaling a high-load iGaming platform using Node.js and microservices architecture. The position involves designing APIs, integrating third-party services, and ensuring system reliability and scalability. The role requires on-site work in one of the specified office locations. 🗂️ Requirements: Strong knowledge of JavaScript and ECMAScript 6, 3+ years commercial experience with Node.js and Nest.js, 5+ years commercial experience in web development, Experience with high-load SQL or NoSQL databases, Experience implementing REST, GraphQL and WebSocket APIs, Experience writing unit and integration tests using TDD, Understanding of microservice architecture, Experience with GIT version control, Experience with RabbitMQ and Redis, Familiarity with MongoDB and MySQL 📃 Skills: JavaScript, ECMAScript6, Node.js, Nest.js, SQL, NoSQL, MongoDB, MySQL, REST, GraphQL, WebSocket, TDD, GIT, RabbitMQ, Redis, Microservices 🏢 Description: We are looking for a Tech/Team Lead Node.js Developer to join our team. In this role, you will spearhead the development of the innovative iGaming platform. Please note that office work 5 days from the EPAM office in Krakow, Gdansk, or Warsaw is required. Responsibilities Build and maintain our in-house platform while ensuring scalability and reliability Design and implement integrations with third-party APIs Take an active role in developing new features from scratch by contributing ideas and technical solutions Operate with high-load SQL and NoSQL databases (MongoDB, MySQL) Implement REST, GraphQL and WebSocket APIs Write and maintain unit and integration tests following TDD principles Collaborate with cross-functional teams to define, design and ship new features Use GIT for version control and take part in code reviews Handle message brokers such as RabbitMQ and Redis Follow microservice architecture principles in system design and implementation Requirements Strong knowledge of JavaScript and ECMAScript 6 standards 3+ years of commercial experience with Node.js and Nest.js 5+ years of commercial experience in web development Hands-on background in high-load SQL or NoSQL databases Commercial experience implementing REST, GraphQL and WebSocket APIs Solid understanding of TDD principles and proven experience writing tests Understanding of microservice architecture principles Practical experience with GIT version control Hands-on background with RabbitMQ and Redis Familiarity with MongoDB and MySQL databases Nice to have 2+ years of practical background in CI/CD, microservices architecture or containerization Hands-on familiarity with Kubernetes Practical exposure to the NATS messaging system Working knowledge of TypeScript We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Mid Developer role in an R&D team focused on building and maintaining modern sports data products, including live visualizations and APIs. The position involves developing new features, improving code quality, and ensuring scalability and performance of JS-based applications. The role emphasizes long-term collaboration, clean architecture, and active participation in the full software development lifecycle. 🗂️ Requirements: 4+ years of commercial experience building modern JS applications, Strong knowledge of HTML, Strong knowledge of CSS/SCSS, Strong knowledge of ES6+, Strong knowledge of TypeScript, Strong knowledge of Node.js, Strong knowledge of Vue.js or another JS framework, Experience with software architecture and design patterns, Strong understanding of SDLC and software delivery, Understanding of Agile methodologies (Scrum, Kanban), Ability to write unit tests and perform code reviews, Experience with application performance and scalability, Fluent English (minimum B1) 📃 Skills: JavaScript, TypeScript, Node.js, Vue.js, HTML, CSS, SCSS, NestJS, Redis, MySQL, RabbitMQ, Sass, Tailwind, PWA, WebSocket, Docker, Git, CI/CD, GitHub, GCP, Kubernetes, Kafka, Express, Koa 🏢 Description: STATSCORE! We are one of the world's leading companies in the field of providing innovative products for the sports industry. We collect, organize and deliver high-quality sports data helping sports enthusiasts, media and betting organizations achieve their goals. We connect people through what we do and create a better world for sports, every single day! PRODUCTS? All of our products are built in-house and are strictly related to sport. We are serving our customers with in-play live visualizations, as well as sports statistics widgets and raw data provided by our SportsAPI. All the features are created by using new technologies and the best practices around the process of software development. WHAT ROLE WILL YOU TAKE ON A TEAM? We are currently looking for an experienced talent who would like to join our R&D group and work with us to solve complex problems in a simple way! As a product company we are looking for long-term cooperation. Your role as Mid Developer requires quality engineering experience to be a natural team player and empathetic person with a desire to motivate and support a team of engineers. You will cooperate with other Developers, Product Manager, QA, System Architect and Tech Leader. You will spend your time mostly on: - coding new features (~70%) - maintenance and bug fixing (~15%) - internal meetings and analyses (~15%) Technologies you will be using (At least be familiar with a few of them) NestJS, Redis, MySQL, RabbitMq, Vue.js, Sass, Tailwind CSS, PWA, WebSocket, Docker, Git, CI/CD, Github Actions. YOUR RESPONSIBILITIES: Take an active part in creating a technological solutions/development roadmap Take an active part in the development cycle (coding, code-reviewing, writing unit tests) Build products, ensuring high performance, scalability and reliability Take care of broadly understood good practices and the quality of code Keep improving the entire software development life-cycle Control technical debt OUR EXPECTATIONS: Have 4+ years of experience building modern JS applications in a commercial environment Knowledge of HTML, CSS/SCSS, ES6+, TypeScript, Node.JS, Vue.JS (or another framework) Experience with architecture and software design patterns Have good interpersonal skills and fluent in English (B1 at least) Have strong analytical and problem-solving skills Strong knowledge of software development life cycle and delivery Understanding of Agile methodologies (mainly Scrum and Kanban) Would be your advantage: Experience with GCP, Kubernetes, Kafka Experience with popular backend frameworks (Nitro/H3, Express, Koa, NestJS) Expertise in application scaling Security expertise HOW DO WE WORK? We work in self-organizing Scrum teams. Test writing and code refactoring is our daily bread. We are taking care of the technological debt and the quality of the code. We plan our Sprint goals every 2 weeks, and use OKR’s in every quarter planning. We speak both Polish (internally) and English (with our partners). We work in hybrid mode with flexible hours, from home or from the office in Katowice (no dress code). TEAM & WORKING CONDITIONS: Annual performance bonus Private medical care Life insurance Lunch cards Sport cards Professional training & courses + English language courses Integration events, family picnics Additional days off for: birthdays, volunteer work Employee referral program Fruits / coffee / tea / drinks Fun office activities in our leisure zone such as: table football, play station, board games, darts Welcome pack All the equipment you need (laptop, extra-monitor, headphones), you only have to bring your talent! RECRUITMENT PROCESS: Only 3 short stages ahead of you: Screening - phone call (up to 30 min. in Polish) Technical task (4 hours estimated) Final interview with Hiring Manager and HR - video call / meeting in our office (90 min. in Polish)

🏢 Summary: Senior Fullstack Developer role focused on building and scaling a complex iGaming platform using React and Node.js. The position involves developing new features, integrating third-party APIs, and contributing to architectural decisions within a microservices-based environment. The role requires strong experience in high-load systems and modern web technologies. 🗂️ Requirements: 5+ years commercial experience in web development, 3+ years commercial experience with React, 3+ years commercial experience with Node.js, 3+ years commercial experience with Nest.js, Strong knowledge of JavaScript and ECMAScript6, Experience with high-load SQL or NoSQL databases, Experience implementing REST, GraphQL and WebSockets, Understanding of TDD and test writing, Knowledge of microservices architecture, Experience with Git, Experience with RabbitMQ, Experience with Redis 📃 Skills: JavaScript, ECMAScript6, React, Node.js, Nest.js, SQL, NoSQL, REST, GraphQL, WebSockets, TDD, Git, RabbitMQ, Redis, Microservices 🏢 Description: We are looking for a Senior Fullstack (React + Node.js) Developer to join our team in developing a complex iGaming platform using the latest web development technologies. If you're a self-starter with solid architecture, design, coding, testing, and debugging skills, we'd love to hear from you! Please note that office work 5 days from the EPAM office in Krakow, Gdansk, Wroclaw, Katowice or Poznan is required. Responsibilities Develop the in-house iGaming platform Integrate 3rd party APIs Create new features from inception Collaborate with cross-functional teams for high-quality solutions Ensure platform scalability and performance Maintain code quality through testing and debugging Contribute to architectural and design decisions Enhance and support existing platform components Requirements Knowledge of JavaScript and ECMAScript 6 standards 3+ years commercial experience in React, Node.js and Nest.js 5+ years commercial experience in web development Background in high loaded SQL or NoSQL databases Implementation of REST, GraphQL and WebSockets Understanding of TDD principles and test writing Familiarity with microservice architecture principles Skills in GIT, RabbitMQ and Redis Nice to have 2+ years hands-on background developing over CI/CD, Microservices architecture or Containers Familiarity with Kubernetes, Nats or TypeScript We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Leadership role focused on designing and delivering a scalable React Native SDK and mobile applications for iOS and Android. The position combines hands-on development with technical direction, mentoring, and cross-functional collaboration to build high-quality, high-performance mobile products. Work is conducted in an agile environment with hybrid presence in Gdansk or Krakow. 🗂️ Requirements: 5+ years experience developing and deploying mobile apps with React Native, Experience leading and mentoring development teams, Strong knowledge of native Android or iOS architecture, Experience with full mobile development lifecycle, At least one successfully released product as team lead, Proficiency in JavaScript and TypeScript, Experience with Git version control, Experience working in Agile environments 📃 Skills: React, ReactNative, JavaScript, TypeScript, iOS, Android, Git, Agile, SDK 🏢 Description: Join Aristocrat as a React Native Lead Developer and become part of a global leader in gaming and entertainment, where technology and creativity come together to deliver world-class player experiences. With thousands of team members across the globe, we are united by a shared mission to bring joy to life through the power of play. In this role, you’ll lead a dedicated, distributed team working on innovative mobile solutions, contributing to scalable products that reach players worldwide. You’ll collaborate across teams while helping shape technical direction and drive impactful digital initiatives. Work mode: hybrid – 3 days per week from the Wave Office in Gdansk or Unity Office in Krakow. What You'll Do Lead the design and development of an SDK and mobile applications in React Native, ensuring alignment with overall product strategy. Participate in agile development processes, including sprint planning, stand-ups, and retrospectives. Establish, enforce and drive best practices in programming, testing, and deployment, ensuring high-quality work and alignment to industry standards. Collaborate with multi-functional teams, including native platform engineers (iOS/Android), product managers, and designers, to define technical requirements and deliver end-to-end solutions. Produce documents and diagrams to communicate your designs and processes effectively with the wider development and leadership teams. Provide regular feedback and support to team members, helping them develop their skills and advance their careers within the organization. Articulate technical concepts and project updates to partners, ensuring transparency and alignment with business goals. Fine-tune application performance, fix bottlenecks, and guarantee responsiveness across diverse platforms. Mentor and guide a team of developers, fostering a collaborative environment that encourages innovation and professional growth. What We're Looking For Demonstrated track record of 5 years of creating and deploying mobile apps using React Native, primarily for iOS and Android. Proven experience leading a development team, with strong mentoring and coaching skills. Strong knowledge of architecture and implementation of native Android or/and iOS apps, experience with full mobile development life cycle. At least one successfully released product while managing a team of developers. Profound expertise in JavaScript, TypeScript, and related frameworks and libraries. Familiarity with Git for version control and experience working in agile development environments. Adept problem solver with a history of delivering quality code and solutions. Why Product Madness? As part of the Aristocrat family, we share their mission of bringing joy to life through the power of play, with a world-class team who creates top-grossing, leading titles in the social casino genre, including Heart of Vegas, Lightning Link, Cashman Casino. With 800 team members across the globe, Product Madness is headquartered in London, with offices in Barcelona, Gdańsk, Lviv, Montreal and a remote team spanning the USA, making us a truly global powerhouse. We live by our People First principle. Regardless of where, when, or how they work, our team members have opportunities to elevate their careers, and grow alongside us. We take pride in fostering an inclusive culture, where our people are encouraged to be their very best, every day. But don’t just take our word for it. In 2024, we made the Global Inspiring Workplace Awards list, and won a bronze award at the Stevies for Great Employers in the ‘Employer of the Year - Media and Entertainment’ category.

🏢 Summary: Senior Fullstack (React + Node.js) Developer role focused on building and enhancing a complex iGaming platform using modern web technologies. The position involves developing new features, integrating third-party APIs, and ensuring scalability, performance, and code quality within a microservices-based architecture. Office presence in Łódź or Wrocław is required. 🗂️ Requirements: Knowledge of JavaScript and ECMAScript 6, 3+ years commercial experience with React, 3+ years commercial experience with Node.js, 3+ years commercial experience with Nest.js, 5+ years commercial experience in web development, Experience with high-load SQL or NoSQL databases, Experience implementing REST, GraphQL and WebSockets, Understanding of TDD principles and writing tests, Understanding of microservices architecture, Experience with GIT, Experience with RabbitMQ, Experience with Redis, Ability to work from office in Łódź or Wrocław 5 days per week 📃 Skills: JavaScript, ECMAScript6, React, Node.js, Nest.js, SQL, NoSQL, REST, GraphQL, WebSockets, TDD, Microservices, GIT, RabbitMQ, Redis 🏢 Description: We are looking for a Senior Fullstack (React + Node.js) Developer to join our team in developing a complex iGaming platform using the latest web development technologies. If you're a self-starter with solid architecture, design, coding, testing, and debugging skills, we'd love to hear from you! Please note that office work 5 days from the EPAM office in Łódź, Wroclaw is required. Responsibilities Develop the in-house iGaming platform Integrate 3rd party APIs Create new features from inception Collaborate with cross-functional teams for high-quality solutions Ensure platform scalability and performance Maintain code quality through testing and debugging Contribute to architectural and design decisions Enhance and support existing platform components Requirements Knowledge of JavaScript and ECMAScript 6 standards 3+ years commercial experience in React, Node.js and Nest.js 5+ years commercial experience in web development Background in high loaded SQL or NoSQL databases Implementation of REST, GraphQL and WebSockets Understanding of TDD principles and test writing Familiarity with microservice architecture principles Skills in GIT, RabbitMQ and Redis Nice to have 2+ years hands-on background developing over CI/CD, Microservices architecture or Containers Familiarity with Kubernetes, Nats or TypeScript We offer/Benefits We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview. We will reach out to selected candidates exclusively. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

🏢 Summary: Mobile Application Engineer role focused on building and maintaining React Native applications for iOS and Android within the gaming and casino domain. The position involves developing new features, improving user experience, and delivering end-to-end solutions in collaboration with backend engineers, product managers, and designers. The engineer will contribute to launching new brands and expanding products into new markets. 🗂️ Requirements: Minimum 5 years of mobile development experience for Android and iOS, Strong experience with React Native or React, Proficiency in TypeScript, Strong understanding of core JavaScript principles, Experience with cloud integrations, Experience with REST APIs, Experience with GraphQL, Experience with Datadog, Experience with Firebase, Experience with version control systems 📃 Skills: React, ReactNative, TypeScript, JavaScript, REST, GraphQL, Datadog, Firebase, CI/CD, Git, Android, iOS, Cloud 🏢 Description: ABOUT THE ROLE We're looking for a Mobile Application Engineer, specializing in React Native, with a mobile-first mindset and an understanding of native development to help drive our projects forward. As a part of the Gaming team, you would be an important cog in the machinery, creating new features for the casino vertical of our sites and its lobby. You will be part of driving a newly created frontend team within Gaming to deliver products and features end to end together with our backend engineers. In close collaboration with product managers, designers and our backend peers, we get to work with a broad variety of initiatives where we are aiming to level up our Casino site to the next level. YOU WILL BE RESPONSIBLE FOR: Develop and maintain high-quality React native applications for both iOS and Android platforms Ensure a smooth, engaging, and intuitive user experience Work on apps for LeoVegas brands such as BetMGM, BetUK, and Expekt Improve and enhance applications with a strong product focus Contribute to launching new brands and expanding into new markets OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS At least 5 years of experience working as a mobile developer for Android and iOS Strong experience with React Native preferred, will consider React only experience Proficiency in TypeScript Good understanding of core JavaScript principles and concepts Experience with cloud integrations Experience with Rest API, Datadog, GraphQL, Firebase and version control NICE TO HAVES Experience writing Unit Tests Hands-on experience optimizing mobile performance Experience with CI/CD integrations WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 1400 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 11 offices worldwide. WHAT WE OFFER Hybrid work policy (3 days a week from office in Warsaw) 4 weeks of Workation  (T&C apply) Competitive base salary Benefits package - 800 PLN net (B2B)/gross (UOP) monthly Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast. Team and office social events throughout the year Equipment: MacBook + smartphone (iPhone 15 or Samsung Galaxy S24) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! As our company working language is English, we’d like to see your CV in English, please

🏢 Summary: Junior Back-End Developer role focused on building and enhancing production-level microservices within a modern, cloud-based gaming platform stack. The position involves working with Java and Spring Boot in a microservices architecture, ensuring observability and scalability of backend services. It offers hands-on experience with cutting-edge infrastructure and cloud technologies in a collaborative environment. 🗂️ Requirements: Minimum 1 year experience with Java, Solid understanding of backend web development, Knowledge of data structures and algorithms, Ability to develop and maintain microservices, Understanding of REST or RPC-based communication, Experience with containerized environments, Ability to work with relational databases 📃 Skills: Java, Spring, SpringBoot, Microservices, Kubernetes, Docker, Redis, PostgreSQL, Kafka, AWS, GCP, gRPC, Grafana, Alertmanager 🏢 Description: Kickstart your career at our Krakow Studio! At Kalamba Games, we're building the most high-performing stack in the industry across Game Development, RGS Platform, QA, and Art. Based in Krakow, our studio is home to a fun-loving, agile, and experienced team driven by a passion to disrupt the market through cutting-edge technology. We're all about collaboration, innovation, and having a great time while doing amazing work. If you're looking for a place to grow, learn, and make an impact from day one—read on! We're hiring: Junior Back-End Developer (immediate start) Are you a natural problem solver? Do you enjoy diving into new tech and tackling challenges head-on? We're looking for a motivated Junior Back-End Developer to join our growing team. What you'll be working with You'll be hands-on with some of the latest and greatest technologies in the industry: Languages & frameworks: Java 21, Spring Boot, Microservices architecture Infrastructure: Kubernetes, Docker, Redis, PostgreSQL, Kafka Cloud platforms: AWS, Google Cloud Platform Communication & observability: gRPC, Grafana, Alertmanager What you'll do Work on meaningful, production-level tasks that directly impact our products. Develop new microservices and enhance existing ones. Make your services observable with custom dashboards and alert rules. Learn fast and tackle unfamiliar tasks with curiosity and independence. And most importantly—have fun doing it! What we're looking for At least 1 year of experience with Java. Solid understanding of backend web development. Knowledge of data structures, algorithms, and problem-solving fundamentals. Passion, motivation, and eagerness to grow in a collaborative environment. What You'll Get as a Kalambian Employment contract or B2B — your choice 26 days of vacation (regardless of seniority) 1 additional paid day off for each year you're with us Private healthcare Subsidized MultiSport card Flexible working hours and remote work options Game room , snacks, and a fully-equipped kitchen Hybrid work model: We'd love to see you in our Kraków office at least 4 days a week during your first 3 months Let's build something great together If you're ready to take your career to the next level and be part of something exciting, we want to hear from you. Join us and help shape the future of gaming tech—one line of code at a time. Apply now and let's get the ball rolling!