Staff / Senior Java Developer

🏢 Summary: Senior Backend Engineer role building and operating scalable core services and developer-facing tools for a voice platform. The position spans backend and frontend development, with end-to-end ownership of distributed, cloud-native production systems and collaboration with ML teams. 🗂️ Requirements: 6+ years building and operating distributed backend services, Professional Java experience, Experience designing gRPC/HTTP APIs, Experience with distributed systems and event-driven architectures, Experience operating cloud-native infrastructure in production, End-to-end production system ownership, Ability to collaborate with ML and cross-functional teams, Clear communication of technical trade-offs 📃 Skills: Java, Python, gRPC, HTTP, APIs, Cloud-native, Distributed, Event-driven 🏢 Description: We are looking for a Senior backend Engineer to help build the core services and user-facing tools that power a voice platform. In this role, you will develop and operate the platform's foundational backend systems while also building intuitive frontend experiences. You will work across the full stack, designing scalable backend services and creating high-quality frontend applications that enable internal teams and partners to build, test, and manage voice experiences. This is an opportunity to work on distributed systems at scale, shape developer-facing tools, and own features from concept through production. What You'll Do Design, build, and operate scalable backend services. Develop and maintain distributed systems using gRPC/HTTP APIs and event-driven architectures. Build cloud-native services with a strong focus on reliability, scalability, and performance. Own production systems end-to-end, including architecture, implementation, deployment, monitoring, and iteration. Partner closely with ML engineers to design robust interfaces between backend services and model-serving infrastructure. Collaborate with engineers and cross-functional stakeholders to deliver high-quality technical solutions. Champion engineering best practices, operational excellence, and maintainable system design. Who You Are You have 6+ years of experience building and operating distributed backend services. You have strong professional experience with Java and Python. Experience with Java is essential, while Python is a plus because much of the team's tooling is built in it. You have experience designing and developing gRPC/HTTP APIs, distributed systems, and event-driven architectures. You have experience building and operating cloud-native infrastructure in production environments. You take ownership of systems throughout their full lifecycle, from design through production support. You collaborate effectively with machine learning teams and cross-functional partners. You are an excellent communicator who can clearly explain technical trade-offs to both technical and non-technical stakeholders.

🏢 Summary: Senior Java Engineer role building cloud-native backend services for life sciences organizations analysing potential adverse drug effects. The position combines hands-on Java development, technical ownership, distributed-system design, AWS operations, and collaboration with international cross-functional teams. 🗂️ Requirements: 4–7 years of Java backend development experience, Strong Spring and Spring Boot knowledge, Production AWS experience, Microservices architecture knowledge, SQL and relational database experience, Tomcat or similar application server familiarity, Independent technical decision-making and system design contribution, Good communication skills 📃 Skills: Java, Spring, SpringBoot, AWS, Microservices, SQL, Tomcat, Databases 🏢 Description: We are looking for a Senior Java Engineer to join our team building a cloud-native platform used by global Life Sciences organisations. You will work on backend services supporting pharmaceutical companies in analysing potential adverse drug effects. This role offers a mix of technical ownership, system design, and hands-on development in a highly collaborative, international environment.🙋‍♀️ ✅ Your responsibilities: Design, develop, and maintain backend services built with Java, Spring, Spring Boot, and AWS. Contribute to architectural decisions and system-level discussions. Ensure stability, scalability, and performance of distributed services. Write clean, maintainable code and participate in code reviews. Collaborate with cross-functional teams to translate requirements into technical solutions. Support deployment automation and production operations. Troubleshoot complex technical issues and propose improvements. 🧠 Our requirements: Minimum 4–7 years of experience in backend development with Java. Strong knowledge of Spring and Spring Boot. Experience with AWS in production environments. Solid understanding of microservices architecture. Hands-on experience with SQL and relational databases. Familiarity with Tomcat or similar application servers. Ability to work independently, make informed technical decisions, and contribute to system design. Good communication skills. Nice to Have: Familiarity with Kafka or other event-driven systems. Ability to assist occasionally with small tasks in React. Experience working on projects in healthcare or Life Sciences. 🌟 What we offer: Fully remote work with flexible arrangements tailored to your needs. Benefits like a multisport pass and private healthcare to support your well-being. Training budget and support for certifications Opportunities to work on international projects that expand your expertise. Clear career growth paths with fast-track promotion opportunities.

🏢 Summary: Java Backend Engineer role focused on building AI-driven digital products for employees and HR stakeholders. The position covers end-to-end microservice development, testing, deployment, observability, production support, and secure, ethical AI delivery in an agile environment. 🗂️ Requirements: Strong Java and Spring Boot experience, Experience building microservices, Spring Batch and Spring Cloud experience, REST API and GraphQL schema design proficiency, NoSQL data modelling experience, Data streaming experience, OAuth 2.0 and Microsoft Entra ID authentication/authorization experience, Azure Cloud Services experience, English communication skills for cross-functional agile collaboration, Commitment to quality, maintainability, documentation, and continuous learning 📃 Skills: Java, SpringBoot, SpringBatch, SpringCloud, Microservices, REST, GraphQL, NoSQL, CosmosDB, Kafka, OAuth2, EntraID, Azure, AppServices, AzureMonitor, APIManagement, Observability 🏢 Description: Role Summary We are looking for a Java Backend Engineer to design, develop, and continuously improve intelligent digital products and services that support employees and HR stakeholders, with AI at the core. Required Skills & Experience Strong experience in Java and Spring Boot, including Spring Batch and Spring Cloud, and building microservices. Proficiency in REST API and GraphQL schema design. Experience with NoSQL data modelling (e.g., Azure Cosmos DB), data streaming (e.g., Confluent Kafka), and authentication/authorization protocols including OAuth 2.0 and Microsoft Entra ID. Familiarity with Azure Cloud Services, including App Services, Azure Monitor, and API-Management. Collaborative communication skills: able to express ideas clearly in English and adapt technical content for diverse audiences while working closely with product managers, designers, and engineers in agile settings. Strong commitment to quality, maintainability, documentation, and continuous learning. Key Responsibilities Design, develop, and continuously improve intelligent digital products and services that support employees and HR stakeholders, with AI at the core. Apply modern engineering practices, from analyzing user needs and developing new features to automated testing, deployment, and observability. Ensure quality, security, reliability, and compliance by applying digital principles and implementing functional and non-functional requirements. Build observability into solutions, monitor production health, help resolve incidents, and remediate root causes of risks and issues. Advocate for user and stakeholder needs, ensuring AI solutions are explainable, ethical, and human-centric. Share knowledge openly, contribute to hiring and onboarding, and help shape a collaborative, forward-thinking engineering culture.

🏢 Summary: Senior Java Developer role leading the delivery of resilient, highly available, event-driven microservices for a high-stakes financial environment. The position owns complex backend features end to end, from data models and APIs through deployment, monitoring, testing, and CI/CD quality practices. 🗂️ Requirements: 7+ years of commercial backend development, Proven experience building complex, distributed, scalable systems, Java 21+, Spring Boot, PostgreSQL, Kafka, OpenAPI, Vault, Kubernetes, Docker, Terraform, GitLab CI or Jenkins, Maven, Microservices architecture, Event-driven design, RESTful APIs, SCRUM, Strong collaboration skills, Fluent English 📃 Skills: Java, SpringBoot, PostgreSQL, Kafka, OpenAPI, Vault, Kubernetes, Docker, Terraform, GitLab, Jenkins, Maven, Microservices, REST, SCRUM 🏢 Description: Senior Java Developer We are looking for a Senior Java Developer (7+ years of experience) to lead the development of resilient, highly available systems and event-driven microservices in a high-stakes financial environment. Requirements: Experience: 7+ years of commercial backend development with a proven track record of building complex, distributed, and scalable systems. Tech Stack: Backend: Java 21+, Spring Boot, PostgreSQL, Kafka, OpenAPI, Vault DevOps & Cloud: Kubernetes , Docker, Terraform, GitLab CI/Jenkins, Maven Core Skills: Microservices architecture, event-driven design, RESTful APIs, SCRUM, strong collaboration skills, and fluent English. Nice to Have: Financial services/FinTech background, experience in distributed global teams, and exposure to AI/LLM integrations. Responsibilities: Architecture & Infrastructure: Lead the development of scalable, event-driven microservices engineered for high throughput and maximum uptime. Data & Security: Design robust data models while ensuring strict data consistency and security in a financial ecosystem. End-to-End Feature Ownership: Own complex backend features across their full lifecycle—from schema and API definition to deployment and production monitoring. Cross-Functional Collaboration: Partner with global stakeholders and frontend engineers to translate complex financial workflows into high-performance technical specs. Engineering Excellence: Elevate code quality through code reviews, modern CI/CD automation, and comprehensive testing (Unit, Integration, and Contract testing).

🏢 Summary: Senior Java Developer role focused on building and modernizing secure, scalable backend platforms and microservices for investment management products. The position offers hands-on architectural ownership, production support responsibilities, and collaboration across Agile engineering and business teams in a hybrid Krakow model. 🗂️ Requirements: 6+ years of commercial Java enterprise application development, Java 17+ proficiency, Advanced Spring and Spring Boot experience, REST API and backend service development experience, Microservices architecture knowledge, Object-oriented design, clean code, and design patterns, SQL query analysis and optimization, Docker and Kubernetes production experience, Kafka or event-streaming platform familiarity, CI/CD and DevOps practices experience, Secure coding and application security knowledge, Security scanning or vulnerability detection tools experience, Logging, monitoring, metrics, and distributed tracing familiarity, Business-critical production support and troubleshooting experience, Cross-functional collaboration with architects, QA, DevOps, and business teams, Very good English communication skills 📃 Skills: Java, Spring, SpringBoot, REST, SQL, Docker, Kubernetes, Kafka, CI/CD, DevOps, Microservices, Agile 🏢 Description: We are hiring on behalf of our client – a global financial services organization recognized for its premium service, deep domain expertise, and strong technology-driven approach. The company partners with clients, helping them solve complex challenges across investor services and capital markets. Their culture is built on collaboration, knowledge sharing, and empowering individuals to contribute beyond their immediate role. As a Senior Java Developer , you will design and develop core backend platforms and scalable microservices. You will contribute to new product development and modernization initiatives, influence architectural decisions, and work closely with engineering and business stakeholders throughout the software development lifecycle. This is a senior, hands-on engineering role with strong ownership expectations. You will help shape technical solutions, improve engineering practices, and ensure that business-critical systems remain secure, reliable, maintainable, and ready to scale. Key takeaways: Stack: Java 17+, Spring, Spring Boot, REST APIs, SQL, Docker, Kubernetes, Kafka, CI/CD Salary: 27 000 - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office (2 days per week for parents of children up to 4 years old) Location: ul. Klimeckiego, Krakow Recruitment process : A call with MOTIFE Recruiter (30 min) Technical interview with the Manager (1h) Technical interview with the Team (1h) Responsibilities: Backend Development Design, develop, and maintain enterprise-grade applications using Java 17+, Spring, and Spring Boot. Build scalable microservices and REST APIs supporting investment management products. Apply object-oriented design, clean code principles, and established software design patterns. Develop solutions that meet demanding performance, reliability, security, and maintainability standards. Architecture and Technical Excellence Contribute to architectural decisions and translate business requirements into effective technical solutions. Drive technical improvements across existing platforms and modernization initiatives. Participate in code reviews and promote consistent engineering standards across the team. Ensure solutions follow secure coding principles and software development lifecycle best practices. Cross-Functional Collaboration Partner with architects, QA engineers, DevOps specialists, and business stakeholders throughout the development lifecycle. Work within a cross-functional Agile team delivering web, backend, and mobile platform capabilities. Communicate technical decisions, risks, and dependencies clearly to technical and non-technical stakeholders. Support knowledge sharing and mentor other engineers where required. Delivery and Production Ownership Troubleshoot and resolve complex technical and production issues. Improve logging, monitoring, metrics, and distributed tracing across services. Enhance CI/CD pipelines to streamline software delivery and deployment. Drive continuous improvements in development processes, engineering tooling, and operational reliability. Requirements: Technical Expertise At least 6 years of hands-on commercial experience developing enterprise applications in Java. Strong practical knowledge of Java 17 or newer. Advanced experience with Spring, Spring Boot, REST APIs, and backend service development. Strong understanding of microservices architecture, object-oriented design, clean code, and software design patterns. Solid SQL skills, including practical experience with query analysis and optimization. Production experience with Docker and Kubernetes. Familiarity with messaging or event-streaming platforms such as Kafka. Experience working with CI/CD pipelines and modern DevOps practices. Security and Production Engineering Understanding of secure coding principles and common application security risks. Experience using security scanning or vulnerability detection tools. Familiarity with application logging, metrics, monitoring, and distributed tracing. Experience troubleshooting and supporting business-critical production systems. Collaboration and Mindset Proven ability to take ownership of technical solutions from design through production support. Strong problem-solving skills and the ability to resolve complex engineering challenges. Ability to collaborate effectively with architects, QA, DevOps, and business teams. Very good English communication skills. What we offer: Private medical care Life insurance Professional training and certification support Social fund benefits platform Stable employment with a long-term contract Apply now Join a senior engineering team building secure and scalable platforms for the investment management industry. Please apply via our careers page and submit your CV in English.

🏢 Summary: Remote full-time B2B opportunity for a Senior Back-End Engineer to build and maintain scalable fintech trading and investment platform services using Java and Go. The role combines hands-on backend development, architecture, performance optimization, code reviews, and mentoring junior engineers. 🗂️ Requirements: 6+ years of professional backend software development experience, Strong Java and Go experience, Microservices architecture expertise, RESTful API and distributed systems knowledge, SQL, NoSQL, and caching systems proficiency, Kubernetes, Docker, and cloud platform experience, CI/CD pipeline and DevOps practices experience, Written and spoken English proficiency 📃 Skills: Java, Go, Microservices, REST, SQL, NoSQL, Kubernetes, Docker, GCP, AWS, Azure, CI/CD, DevOps 🏢 Description: Senior Back-End Engineer (100% remote; Java+Go) 💰 Salary: 5500-7700 USD 💻 100% remote 🕦 Full-time ☑️ B2B We’re looking for a Senior Back-End Engineer (Java+Go) to join a fast-growing fintech company that builds a digital trading and investment platform. Requirements: 6+ years of professional experience in backend software development. Strong experience with Java and GoLang. Deep understanding of microservices architecture, RESTful APIs, and distributed systems. Strong proficiency in SQL and NoSQL databases, as well as caching systems. Hands-on experience with Kubernetes, Docker, and cloud platforms such as GCP, AWS, or Azure. Experience working with CI/CD pipelines and modern DevOps practices. Proficiency in English (both written and spoken). Nice To have: Background in fintech, high-frequency systems, or trading platforms. Understanding of low-latency system optimization. Experience working with event-driven architectures (Kafka, RabbitMQ, etc.). Key Responsibilities: Design, develop, and maintain backend systems and microservices using Java and GoLang. Build scalable, secure, and high-performance APIs and data pipelines. Contribute to architectural decisions, perform code reviews, and support continuous process improvements. Lead and mentor junior developers, sharing expertise to maintain high-quality standards. Collaborate closely with cross-functional teams to define and implement technical solutions. Improve system performance, reliability, and long-term maintainability through optimization and best practices. Stay current with emerging backend technologies, tools, and best practices. Get to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/

🏢 Summary: Long-term B2B opportunity for an experienced Java Backend Engineer to build scalable, intelligent enterprise digital products and services. The role focuses on modern backend architecture and AI-enabled application development in a hybrid setup. 🗂️ Requirements: Experience in Java backend engineering, Java, Spring Boot, Spring Cloud, Spring Batch, Microservices, REST APIs, GraphQL, Azure Cloud, Azure Cosmos DB, Kafka, OAuth 2.0, Microsoft Entra ID 📃 Skills: Java, Spring, Microservices, REST, GraphQL, Azure, Cosmos, Kafka, OAuth, Entra 🏢 Description: -Senior Java Backend Engineer | Poland | Hybrid | B2B We're looking for an experienced Java Backend Engineer to join a long-term enterprise project focused on building intelligent digital products and services. DCV-Senior Java Backend Engineer-WP/US/Jo/03-08-26 send CV to (marcillina.tietjen@dcvtechnologies.co.uk) Tech Stack Java Spring Boot Spring Cloud Spring Batch Microservices REST APIs GraphQL Azure Cloud Azure Cosmos DB Kafka OAuth 2.0 Microsoft Entra ID Nice to Have Spring AI LangChain AI-powered application development 📍 Poland (Hybrid) 💼 B2B Contract If you enjoy building scalable backend systems and are interested in modern AI-enabled enterprise applications, we'd love to hear from you.

🏢 Summary: Senior Backend Java Developer role focused on building, testing and maintaining scalable backend services for customer-facing digital banking platforms. The position combines Java microservices development, backend test automation, technical solution design and collaboration with business stakeholders in an agile team. The offer includes private medical care, sports card co-financing, dedicated consultant support and an employee referral program. 🗂️ Requirements: Java 21+ backend development experience, REST API and microservices experience, Spring Boot 3.4, Spring WebFlux and Hibernate experience, Oracle DB, DB2 and SQL knowledge, Git, Maven and Jenkins experience, Splunk experience, SOLID principles knowledge, Unit, integration, API and performance test automation experience, Cucumber and WireMock experience, Backend testing leadership in an agile team, Business stakeholder collaboration and solution-design experience, AI-powered development and testing tools experience, Very good written and spoken English 📃 Skills: Java, REST, Microservices, Spring, WebFlux, Hibernate, Oracle, DB2, SQL, Git, Maven, Jenkins, Splunk, SOLID, Cucumber, WireMock, Agile, AI, English 🏢 Description: As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Senior Backend Java Developer Responsibilities: Design, develop, test and maintain backend services for digital banking platforms Drive backend testing activities within an agile team Ensure delivery of high-quality, reliable and scalable solutions Collaborate with business stakeholders to gather requirements and support solution design Support analysis activities and translate business needs into technical solutions Use AI-powered tools in development, testing and delivery processes Contribute to technical design, implementation, continuous improvement and operational support Work within a cross-functional agile team delivering customer-facing digital banking services Requirements: Strong experience in backend development using Java 21+, REST APIs and microservices Hands-on experience with Spring Boot 3.4, Spring WebFlux and Hibernate Practical knowledge of Oracle DB, DB2 and SQL Hands-on experience with Git, Maven and Jenkins Practical experience in working with Splunk Strong understanding of SOLID principles Proven experience in test automation, including unit, integration, API and performance testing Hands-on experience with Cucumber and WireMock Proven experience in driving backend testing activities within an agile team Ability to collaborate with business stakeholders and contribute to solution design Experience in using AI-powered tools in software development and testing Very good command of English, both spoken and written Nice to have: Understanding of reactive programming concepts Hands-on experience with JavaScript and TypeScript Practical experience with Angular 2+ and AngularJS Hands-on experience with Playwright and qTest ISTQB Foundation certification Practical knowledge of Gherkin Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program