Fullstack Software Engineer (regular)

🏢 Summary: B2B contract for a Senior Software Engineer to develop and operate a JVM-based, event-driven platform remotely from Poland. The role provides end-to-end ownership of system design, delivery, production reliability, monitoring, and support, with a rate up to 140 zł/h net + VAT. 🗂️ Requirements: 5+ years of software engineering experience, End-to-end ownership of features and components, Java and Kotlin expertise, Event-driven systems experience, Distributed systems knowledge, Event-driven architecture and API gateway experience, PostgreSQL, data modelling, and query performance knowledge, Relational and non-relational database knowledge, Unit, integration, and end-to-end testing experience, Independent delivery, risk, sequencing, and dependency management, C4 model system design experience, DORA metrics, stability, SSDLC, velocity, and predictability familiarity, AI coding tools experience, Cloud platform familiarity, Docker and Kubernetes experience, Fluent Polish, Advanced English (B2/C1) 📃 Skills: Java, Kotlin, JVM, PostgreSQL, NoSQL, Docker, Kubernetes, C4, DORA, SSDLC, Claude, Codex, Cursor, Cloud 🏢 Description: Contract : B2B Rate : up to 140 zł/h net + VAT depending on skills and experience Location : Remote within Poland Start : ASAP Project : Development of a JVM-based, event-driven platform with end-to-end ownership of software design, delivery, and production reliability. Key Technologies/Areas Java, Kotlin, JVM Event-Driven and Distributed Systems PostgreSQL and NoSQL Docker, Kubernetes Cloud Platforms AI Coding Tools Project Overview We are looking for a Senior Software Engineer to join one of our client’s engineering teams. You will own features and components from refinement and system design through development, production deployment, monitoring, and post-release support. Responsibilities Own the end-to-end design and delivery of features and components. Create, maintain, and align system designs using the C4 model with the domain target architecture. Develop reliable, production-ready, and well-tested software using Java and Kotlin. Manage estimation, sequencing, delivery risks, and cross-team technical dependencies. Own monitoring, reliability, production support, and participation in on-call. Contribute to frontend development where required. Use AI coding tools as part of your daily workflow. Requirements 5+ years of professional software engineering experience , including proven ownership of features and components end to end. Solid foundation in the JVM , including Java and Kotlin . Production experience with event-driven systems. Good understanding of distributed systems, including idempotency, at-least-once vs exactly-once trade-offs, schema evolution, and partitioning. Experience with event-driven architecture, API gateways, and understanding when not to apply these patterns. Sound knowledge of relational and non-relational databases, including PostgreSQL , data modelling, and query performance. Proven experience delivering reliable software with unit, integration, and end-to-end testing. Ability to independently manage delivery, risks, sequencing, and cross-team dependencies. Experience owning system design at team scope using the C4 model. Familiarity with DORA metrics, stability, SSDLC compliance, velocity, and predictability. Experience using AI coding tools such as Claude Code, OpenAI Codex, opencode, Cursor, or similar. Familiarity with cloud service providers. Experience with Docker and Kubernetes . Fluency in Polish and advanced English (B2/C1) Nice to have Frontend experience with React, TypeScript, and Node.js. Hands-on production experience with Kafka. Experience with Microsoft Azure. Why join us? Rite NRG is a vibrant outsourcing technology company driven by the Right People. We are dedicated to empowering businesses through innovative software solutions. We focus on building strong partnerships and providing top-notch software solutions that drive real business growth. Our business model revolves around collaboration and delivering impactful results for our clients. Join us and be part of a team where great minds, Right Energy, and strong partnerships come together to shape the future of technology! Possibility of long-term cooperation on a full-time project engagement basis. Flexibility in organizing the provision of services, taking into account project requirements and agreed availability. Opportunity to contribute to technically advanced projects. Opportunity for international collaboration.

🏢 Summary: Oferta dla Regular Backend Engineera obejmuje rozwój i utrzymanie systemów dla sektora wydobywczego, opartych na Java, Spring i Spring Boot. Rola łączy pracę backendową z obszarami CI/CD, wdrożeniami oraz docelową odpowiedzialnością za wybrane moduły i współpracą z interesariuszami. 🗂️ Requirements: Minimum 5 lat komercyjnego doświadczenia, Dobra znajomość Java, Dobra znajomość Spring i Spring Boot, Bardzo dobra znajomość języka angielskiego, Umiejętność bezpiecznego wykorzystania AI w rozwoju oprogramowania, Gotowość do wyjazdów do Wielkiej Brytanii 1–2 razy w roku 📃 Skills: Java, Spring, SpringBoot, Jenkins, ArgoCD, AzureDevOps, Linux, Docker, Kubernetes, Bash, Python, SQL, PostgreSQL, Neo4j, Elasticsearch, CI/CD, AI 🏢 Description: Rozbudowujemy zespół dla naszego klienta z Wielkiej Brytanii, który tworzy nowoczesne rozwiązania cyfrowe dla sektora naftowego w obszarze wydobycia (upstream). Jeśli fascynują Cię projekty inżynieryjne i chcesz dostarczać rozwiązania dla globalnych liderów takich jak BP, AkerBP, Var Energi, Total czy Equinor, ta oferta jest właśnie dla Ciebie! Szukamy Regular Backend Engineer z dobrą znajomością Java i Spring. Dodatkowym atutem będzie doświadczenie w zakresie: projektowania i implementacji CI&CD: Jenkins, Argo CD i Azure DevOps, pracy ze środowiskiem Linux w oparciu o Docker oraz Kubernetes, wykorzystania języków skryptowych, w szczególności Bash lub Python, pracy z bazami danych SQL (PostgreSQL) oraz No-SQL (Neo4j, ElasticSearch), stosowania szeroko rozumianej automatyzacji w QA (unit, integration, performance), tworzenia rozwiązań dla branż inżynieryjnych, w szczególności naftowej lub energetycznej. W ramach kilkuosobowego zespołu, pod okiem naprawdę mocnego Architekta i Leada, będziesz rozwijał istniejące oraz tworzył nowe systemy, serwisy i aplikacje. Będziesz działał z kodem Java osadzonym w ramach Spring oraz Spring Boot. Oprócz tego zajmiesz się wybranymi obszarami CI&CD zarówno od strony budowy, jak i testowania oraz deploymentu. W dłuższej perspektywie przejmiesz odpowiedzialność za wybrane moduły nawigując wdrożenia oraz dalszy rozwój w szeroko rozumianej komunikacji z klientem oraz odbiorcami rozwiązań. Przykładowe projekty nad którymi pracujemy: Aplikacja monitorowania stanu systemów bezpieczeństwa na platformach wiertniczych. Aplikacja do integracji i śledzenia informacji na temat stanu procesu wykonywania odwiertów na poszczególnych platformach wiertniczych Aplikacja integrująca oraz umożliwiająca wizualizację szeroko pojętych danych i informacji związanych z procesem wydobywczym na platformie wiertniczej Zakres zadań Główne: rozwój i utrzymanie istniejących oraz tworzenie nowych systemów od strony backendu, utrzymanie i zarządzanie CI&CD, [w dłuższym terminie] przejęcie odpowiedzialności za wybrane moduły zarówno technicznie, jak i organizacyjnie - komunikując się z zaangażowanymi stakeholderami. UWAGA - dla potwierdzenie, że zapoznałeś się z treścią naszego ogłszenia, prosimy w pytaniu ankietowym: "Co Cię zainteresowało w naszej ofercie" zacząć swoją odpowiedź od słowa: PLATFORMA. Link do ankiety w sekcji Etapy Rekrutacji. Dodatkowo: udział w całym cyklu życia produktu i jego rozwoju - wymagania, architektura, implementacja, wdrożenie i utrzymanie, wdrożenia oraz migracje aplikacji między różnymi środowiskami, udział w podejmowaniu decyzji i rozwiązywaniu problemów w określonych obszarach projektu, mitygacja i rozwiązywanie problemów technicznych w ramach operacyjnych systemów, komunikacja, organizacja i współpraca w ramach międzynarodowego i interdyscyplinarnego zespołu. Oczekiwania Oprócz wymienionych wyżej technologii, oczekujemy od kandydata: min. 5 lata komercyjnego doświadczenia, podejścia zespołowego i proaktywności (zarówno technicznej, jak i komunikacyjnej), nastawienia na cel i dowożenie, otwartości zarówno w komunikacji, jak i w podejściu do rozwiązywania problemów, chęci do podejmowania wyzwań i nauki nowych rzeczy, bardzo dobrej znajomości j. angielskiego (współpraca na co dzień z zespołem z UK), zaangażowania oraz kreatywności, umiejętności efektywnego i bezpiecznego wykorzystania AI do rozwoju oprogramowania, otwartości na wyjazdy do Wielkiej Brytanii (1-2 razy w roku na kilka dni, w celu lepszej integracji z tamtejszym zespołem) Mile widziane doświadczenie z branży naftowej lub energetycznej. Nie szukamy natomiast kandydatów: tech driven, dla których ważniejsze od zadań biznesowych są aspekty techniczne i 'idealny' kod, mających trudności z przyjmowaniem lub przekazywaniem otwartej i konstruktywnej krytyki oraz opinii, akceptujących tylko pracę samodzielną, Co oferujemy Oprócz rynkowych stawek: - kulturę ‘remote first’ z możliwością pracy w pełni zdalnie lub hybrydowo z biura na Śląsku, - biuro w dogodnej lokalizacji - łatwy dojazd autem lub transportem miejskim - darmowy parking - żłobek/przedszkole na terenie biurowca - multisport plus i inicjatywy sportowe - ubezpieczenie zdrowotne PZU - szkolenia i rozwój (2.5k PLN na rok) - pair programming culture (zawsze otrzymasz pomoc doświadczonych kolegów i koleżanek) - udział w konferencjach IT (SpringIO w Barcelonie, Devoxx w Londynie) - integracje firmowe (wyjazdy, grille, spotkania) Etapy Rekrutacji Złożenie CV Zapoznanie się z CV Kandydata Wstępna rozmowa telefoniczna - ok. 0,5 godz. Rozmowa techniczna (w biurze lub zdalnie) - ok. 1 godz Rozmowa końcowa i decyzja - ok. 0,5 godz. Środowisko i kultura pracy Współpracę w zespole opieramy przede wszystkim na wzajemnym zaufaniu i uczciwości. Nie patrzymy na ręce i pozwalamy na maksymalną swobodę przy realizacji zadań. Z drugiej strony, w kontekście biznesowym, nastawieni jesteśmy na efektywność oraz jakość - są to dla nas najważniejsze czynniki, dzięki którym Klienci nas szanują i wiedzą, że mogą na nas liczyć. Do zespołu angażujemy ludzi proaktywnych i takich, których nie trzeba zachęcać do działania. Ludzi, którzy nie boją się wyzwań. Forma współpracy zdalnie lub hybrydowo z naszego biura w Zabrzu O nas Iterative Engineering - zajmujemy się rozwojem produktów cyfrowych i tworzeniem oprogramowania. Jesteśmy nastawieni na budowanie długotrwałych relacji i osiągamy to poprzez zaufanie. Naszym największym atutem jest doświadczony zespół profesjonalistów oraz sprawny proces tworzenia oprogramowania oparty na paradygmatach Agile. Jesteśmy zaangażowani w dostarczanie rozwiązań dla sektorów inżynieryjnych tj. Oil & Gas, Renewables oraz Space. Nasz stack technologiczny - BE: Java + Spring - FE: Javascript/Typescript + Angular/React - Mobile: Ionic/Cordova + Angular/React - ENV: Linux + Docker + K8s

🏢 Summary: Senior Backend Engineer role focused on building and maintaining multi-cloud Java services in a microservices, event-driven environment. The position includes test automation, production-code optimization, technical problem-solving, and support for service providers. 🗂️ Requirements: 4+ years of web development experience in similar environments, Bachelor’s degree in Computer Science, Information Security, or related technology field, Java 8, Spring, and Spring Boot expertise, Microservices and event-driven systems experience, Code and business-process documentation experience, Complex requirements and business-process analysis experience, Internal tools and reusable architecture development experience, Production code optimization and performance improvement experience, Application debugging, refactoring, and production-issue reproduction experience, JUnit and Mockito testing experience, Git experience, Commitment to code quality and ownership, Strong problem-solving and continuous-improvement approach, Upper-intermediate English 📃 Skills: Java, Spring, SpringBoot, Microservices, JUnit, Mockito, Git, AWS, ECS, SNS, SQS, RedShift 🏢 Description: ID77083 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to develop and maintain multi-cloud platform services using Java 8 and Spring Boot , contributing to microservices architecture and event-driven systems within a small, high-ownership team. You will optimize production code, write unit and system tests using JUnit and Mockito, support complex business requirements gathering, and monitor service providers in the field. Experience in financial, accounting, or logistics software is a strong plus. What you will do Develop multi-cloud platform services as part of a small engineering team; Build and maintain automation frameworks to execute developer-written tests in private and public cloud environments; Optimize code, ensure engineering best practices are followed, and support the team in resolving technical challenges; Monitor and support service providers using the application in the field. Must haves 4+ years of experience in web development in similar environments; Bachelor’s degree in Computer Science, Information Security, or a related technology field; Strong knowledge of Java 8 , Spring , and Spring Boot ; Experience with Microservices and event-driven systems; Experience creating documentation for code and business processes; Experience gathering and navigating complex requirements and business processes; Experience developing internal tools and reusable architecture; Experience optimizing code and improving performance for production systems and applications; Experience debugging, refactoring applications, and reproducing production issues; Experience with testing frameworks including JUnit and Mockito ; Experience with Git ; Commitment to code quality and ownership of developed applications; Strong problem-solving skills with a proactive approach to continuous improvement; Upper-intermediate English level. Nice to haves Experience working with financial or accounting backends; Experience with Test-Driven Development (TDD); Experience with logistics software, delivery, transportation, route planning, or roadside assistance domains; Experience with AWS services such as ECS, SNS, SQS, and RedShift; Experience in architectural design, code reviews, and SOLID principles. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

🏢 Summary: Middle/Senior Full Stack Developer role focused on customer-growth features for a large-scale international platform, including onboarding, subscriptions, pricing, trials, and payments. The position emphasizes Node.js back-end development, React front-end work, cloud scalability, and cross-functional product delivery. 🗂️ Requirements: 4+ years of commercial software development experience, Strong Node.js and TypeScript back-end experience, Good React and TypeScript front-end skills, Product-oriented development experience, Cloud infrastructure and DevOps knowledge, AWS experience: EC2, ECS, RDS, S3, MySQL and Redis experience, CI/CD and infrastructure automation familiarity, Scalable system design and engineering best-practice knowledge, Upper-Intermediate English or higher 📃 Skills: Node.js, TypeScript, React, AWS, EC2, ECS, RDS, S3, MySQL, Redis, CI/CD, DevOps 🏢 Description: Join a product-focused engineering team working on customer growth initiatives that directly influence business scalability and user experience. You will contribute to the evolution of onboarding, subscription plans, pricing strategies, and payment experiences for a large-scale international platform. We are looking for a Middle/Senior Full Stack Developer with strong Back-end expertise in Node.js and solid Front-end skills in React. You will collaborate closely with Product Managers, Designers, QA Engineers, and other developers in a highly collaborative environment focused on innovation and continuous improvement. We at Sigma Software value engineering excellence, ownership, and knowledge sharing. This is an opportunity to work with modern cloud technologies, influence product decisions, and contribute to impactful solutions used by customers worldwide. Customer Our Customer is a product-focused international company developing a large-scale digital platform with a strong emphasis on customer growth and user experience optimization. The organization continuously improves pricing models, onboarding journeys, payment flows, and trial experiences to increase customer engagement and business scalability. The engineering culture promotes innovation, ownership, and close collaboration across product, design, and engineering teams. Project The project focuses on building and improving customer-facing product experiences related to onboarding, subscription management, pricing strategy, trial conversion, and payment flows. The team works in a modern cloud-based environment with high engineering standards and a strong product mindset. You will participate in feature delivery, scalability improvements, architecture discussions, and engineering initiatives aimed at increasing development efficiency and enhancing customer experience. Requirements 4+ years of commercial software development experience Strong Back-end development experience with Node.js and TypeScript Good Front-end development skills with React and TypeScript Experience working in product-oriented environments Knowledge of cloud infrastructure and DevOps practices Experience with AWS services such as EC2, ECS, RDS, and S3 Experience with relational databases and caching solutions including MySQL and Redis Familiarity with CI/CD tools and infrastructure automation practices Understanding of software engineering best practices and scalable system design Strong communication and collaboration skills Upper-Intermediate or higher English level Will be a plus Experience with Terraform, Ansible, SonarQube, GitLab CI/CD, and ELK stack Experience working with subscription-based or SaaS products Knowledge of experimentation platforms, pricing systems, or payment integrations Experience contributing to product growth initiatives and customer journey optimization Personal Profile Proactive and collaborative team player Product-minded engineer with strong ownership mentality Passionate about learning and continuous improvement Comfortable working in cross-functional international teams Open to innovation and process improvements Responsibilities Design, develop, and maintain scalable Full Stack solutions using Node.js, TypeScript, and React Collaborate closely with Product Managers, Designers, QA Engineers, and developers to deliver high-quality product features Contribute to onboarding, payment, trial, and pricing experience improvements Participate in technical discussions, architectural decisions, and solution design activities Improve system reliability, scalability, and performance within a cloud-based infrastructure Write clean, maintainable, and well-tested code following engineering best practices Participate in code reviews and knowledge-sharing initiatives Contribute to CI/CD improvements and engineering process optimization Support cross-team initiatives focused on developer experience and operational efficiency

🏢 Summary: Senior/Lead Product & Platform Engineer role to enhance a core platform using Kotlin, Java and GCP. The offer covers API, microservice and asynchronous-systems development, production reliability, AI/LLM capabilities and technical mentoring in a remote B2B engagement. 🗂️ Requirements: 5+ years of commercial Java development experience, Commercial Kotlin and Java experience, GCP experience: Cloud Run, Compute Engine, Cloud Storage, IAM, networking, REST API, microservices and distributed-systems experience, PostgreSQL, Redis and Firestore experience, CI/CD, Docker and automated-deployment experience, AI-agentic / LLM feature delivery experience, Retrieval grounding, moderation and hallucination-management knowledge, Ability to work in unfamiliar Kotlin/GCP codebases with AI coding tools, English proficiency at C1 level, Independent work, engineering judgement and mentoring ability 📃 Skills: Java, Kotlin, GCP, CloudRun, ComputeEngine, CloudStorage, IAM, REST, Microservices, PostgreSQL, Redis, Firestore, CI/CD, Docker, LLM, AI, Grounding, Moderation, Kotlin, Networking 🏢 Description: In Short - 100% remote or work from one of two offices - 170–200 PLN/h + VAT - B2B contract Your Daily Missions - Develop and enhance a core product platform. - Work with Kotlin and Java on GCP. - Build REST APIs, microservices and asynchronous-processing solutions. - Work with PostgreSQL, Redis and Firestore. - Develop CI/CD and deployment automation using Docker. - Ensure appropriate testing, monitoring, logging and performance. - Troubleshoot production issues. - Build reusable capabilities and solutions. - Use AI coding tools to accelerate development while verifying generated code. - Mentor other engineers and clearly communicate technical decisions. The Essentials We’re Seeking - At least 5 years of commercial experience as a Java Developer. - Strong commercial experience with Kotlin and Java. - Strong GCP experience, including Cloud Run, Compute Engine, Cloud Storage, IAM and networking. - Strong written and spoken English at C1 level and experience working in an international environment. - Experience with REST APIs, microservices and distributed systems. - Experience with PostgreSQL, Redis and Firestore. - Experience with CI/CD, Docker and automated deployments. - Practical experience delivering AI-agentic / LLM features. - Understanding of retrieval grounding, moderation and hallucination management. - Ability to quickly work in an unfamiliar Kotlin/GCP codebase using AI coding tools. - Strong engineering judgement and a reusability mindset. - Ability to work independently and mentor other engineers. Nice-to-haves - Terraform, Pub/Sub, Vertex AI or OpenAI APIs. - Experience with high availability, fault tolerance, high-throughput / low-latency systems, concurrency or caching. - Experience with OAuth / OIDC / JWT, secrets management or encryption. - Experience with voice or conversational AI. - Experience in collections, contact-centre or financial services. Benefits and Working Arrangements - Work remotely or from offices in Wroclaw or Bielsko-Biala, with occasional office, client-site or client-headquarters visits as needed. - Flexible start time between 7:00 and 10:00 am. - Employee referral bonus of 3,000–7,000 PLN. - Remote English classes and access to a company library. - Opportunities to participate in TechTalks, meet-ups and knowledge-sharing guilds.