Senior Software Developer (GoLang) | Remote in Poland

🏢 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

🏢 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: Long-term B2B opportunity for a Senior Backend Software Engineer to develop and maintain European Commission eDelivery products. The role focuses on Java-based backend services, distributed systems, secure APIs, messaging, data performance, testing, observability, and CI/CD in a mostly remote EU-based arrangement. 🗂️ Requirements: 8+ years with Java, Jakarta EE, Spring/Spring Boot, and Hibernate, 7+ years with Maven, Gradle, and npm, 5+ years with Oracle DB, PostgreSQL, or MySQL, 5+ years with REST APIs or SOAP/WSDL web services, 5+ years with ActiveMQ, RabbitMQ, or Kafka, 5+ years with XML, XSD, XPath, WSDL, JSON, and JSON Schema, 5+ years with Git workflows, 1+ year with distributed transaction patterns and idempotency, English at B2 level or higher, Located within the EU 📃 Skills: Java, JakartaEE, Spring, SpringBoot, Hibernate, Maven, Gradle, npm, Oracle, PostgreSQL, MySQL, REST, SOAP, WSDL, ActiveMQ, RabbitMQ, Kafka, XML, XSD, XPath, JSON, Git, GitFlow, Domibus, DomiSMP, DomiSML, AS4, ebMS3, OpenAPI, mTLS, HSM, Docker, Terraform, Ansible, Python, Node.js 🏢 Description: Currently, for one of our Partners, we are looking for an experienced Senior Backend Software Engineer (m/f/n) to support a long-term eDelivery project delivered for an organization of the European Commission. Nature of tasks: eDelivery Development: Contribute to the development of eDelivery products (Domibus, DomiSMP, DomiSML, eDelivery Conformance Testing Platform) in coordination with Technical Architect(s). Backend Development & Testing: Develop and maintain services, write clean, functional, maintainable code, troubleshoot problems, write unit/integration tests, and integrate them into the CI/CD pipeline. Distributed Architecture: Design distributed transaction patterns, handle idempotency, duplicate detection, reliable message delivery (at-least-once / exactly-once), eventual consistency, and compensating transactions. Security & APIs: Implement authentication/authorization flows, mTLS, secrets management, HSM integration, threat modeling, and versioned REST/SOAP APIs with enforced contracts (OpenAPI, WSDL). Messaging & Integrations: Govern inter-service communication patterns, design message broker topologies (queues, topics, dead-letter handling), and integrate via standard protocols (AS4, ebMS3). Performance & Data Storage: Optimize for speed and scalability, profile database queries, resolve contention points (connection pools, thread starvation), and design data storage solutions (partitioning, sharding, zero-downtime migrations). Observability & Cloud: Implement structured logging, distributed tracing, metrics collection, participate in post-mortems, write technical documentation, and basic configuration of cloud services. Minimum Requirements: Backend languages and frameworks (Java, Jakarta EE, Spring/Spring Boot, Hibernate): at least 8 years . Build and dependency management tools (Maven, Gradle, npm): at least 7 years . Relational databases (Oracle DB, PostgreSQL, MySQL): at least 5 years . REST APIs and/or SOAP/WSDL web services: at least 5 years . Message brokers (ActiveMQ, RabbitMQ, Kafka): at least 5 years . Message format standards (XML, XSD, XPath, WSDL, JSON, JSON Schema): at least 5 years . Git and Git workflows (GitFlow, trunk-based development): at least 5 years . Experience with distributed transaction patterns and idempotency: at least 1 year . English: minimum B2 level . Nice to have: eDelivery Standards: Experience with core eDelivery standards and profiles: OASIS ebMS3, AS4, SMP, BDXL, ebCore PartyId, and technical standards. Security & PKI: Experience with security protocols, web application security, secure API design (TLS/SSL, mTLS, PKI, HTTPS, WS-Security, CSP, SOAP/REST, OAuth 2.0, OpenID Connect, JWT, SAML, OWASP mitigation) and secrets management tools (HashiCorp Vault, AWS Secrets Manager). Performance & Code Quality: Experience in JVM profiling, resolving thread contention/connection pool issues, Liquibase/zero-downtime database migrations, code reviews, static analysis (SonarQube), and technical debt management. Architecture & Messaging: Experience with standard integration protocols, enterprise messaging patterns, service discovery, circuit breakers, load balancing, and containerization (Docker). Tooling & Infrastructure: Experience with CI/CD pipelines (Bamboo, GitLab CI, GitHub Actions), Infrastructure-as-Code (Terraform, Ansible), and monitoring/telemetry tools (Dynatrace, Splunk, Elastic APM, OpenTelemetry). Other Skills & Domain: Experience with Python or Node.js, Java software architecture / enterprise software development certifications, working for European institutions, public administration, or large international organizations, and French language skills (B2+). Offer: Type of contract: B2B via SHIMI. Rate: 450-500 Eur/MD. Type of work: mostly remote work (the candidate must be located within the EU) — occasional travel to Brussels may be required (with at least 7 days' notice). Travel: Occasional travel to Brussels may be required. Two planned customer meetings per 12-month period (up to 2 days each) are foreseen and covered by the contractor. Additional travel may be reimbursed only if explicitly requested and approved by the customer. Duration of the collaboration: long-term.

🏢 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: 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: Hybrid Backend Developer role focused on building, testing, and maintaining reliable digital banking services in an agile team. The offer combines Java microservices development with ownership of test automation and backend quality, plus occasional business analysis support. Work is hybrid in Warsaw, with a long-term B2B engagement and a rate of up to 160 PLN net plus VAT per hour. 🗂️ Requirements: Java 21+, REST API and microservices development, Spring Boot 3.4 and Spring WebFlux, Hibernate, Git, Maven and Jenkins, Oracle DB, DB2 and SQL, SOLID principles, Test automation, Performance, unit, integration and API testing, Cucumber and WireMock, AI tools 📃 Skills: Java, REST, Microservices, SpringBoot, WebFlux, Hibernate, Git, Maven, Jenkins, Oracle, DB2, SQL, JUnit5, Cucumber, WireMock, AI 🏢 Description: General info: Model of work: hybrid (3 days work from office Warsaw) Type of contract: B2B, long-term cooperations Rate: up to 160 PLN nett + vat/ hour Introduction & Summary Looking for an experienced Backend Developer with a strong focus on testing and a willingness to engage in a blended capability role. This position offers the opportunity to work within an agile team while driving the quality and reliability of digital banking solutions. Main Responsibilities Design, develop, test, and maintain backend services that power our digital banking platforms. Drive backend testing activities within a dedicated agile team, ensuring high-quality, reliable, and scalable solutions. Collaborate closely with business stakeholders to understand requirements and contribute to solution design. Support analysis activities when needed, helping to translate business needs into technical solutions. Leverage AI-powered tools as part of daily development, testing, and delivery practices. Contribute to the full product lifecycle, from technical design and implementation to continuous improvement and operational support. Work collaboratively within a cross-functional agile team to deliver customer-focused digital banking services. Key Requirements Proficient in Java 21+, Rest API, and microservices. Experience with Spring Boot 3.4, Spring WebFlux, Hibernate, Git, Maven, Jenkins, Oracle DB/DB2/SQL, and Junit5. Knowledge of SOLID principles. Proficient in test automation, performance, unit, integration, and API testing. Familiarity with tools like Cucumber and WireMock. Experience in using AI tools. Nice to Have Frontend experience with JavaScript, TypeScript, Angular 2+, and Angular.JS. Familiarity with Playwright and qTest. ISTQB Foundation certification. Experience with Gherkin.

🏢 Summary: Senior Java Developer role focused on building and maintaining scalable backend services for digital banking platforms. The position combines Java development with ownership of backend testing, AI-assisted delivery practices, and collaboration in a cross-functional agile team. It offers a B2B contract, up to 150 PLN/h net + VAT, and hybrid work in Warsaw. 🗂️ Requirements: Backend development experience at Regular or Senior level, Java 21+ proficiency, REST API and microservices architecture experience, Spring Boot 3.4, Spring WebFlux, and Hibernate experience, Test automation experience with JUnit5, Cucumber, and WireMock, Git, Maven, Jenkins, Oracle DB, DB2, SQL, and Splunk knowledge, SOLID principles understanding, AI tools usage in software development, Fluent English 📃 Skills: Java, REST, Microservices, Spring, WebFlux, Hibernate, JUnit, Cucumber, WireMock, Git, Maven, Jenkins, Oracle, DB2, SQL, Splunk, SOLID, AI 🏢 Description: Senior Java Developer About our Client You will be working for a prominent player in the banking industry, helping shape the future of digital business banking across the Nordic region. The client builds and delivers innovative web and mobile banking solutions used by customers in Denmark, Finland, Sweden, and Norway, continuously evolving the next generation of scalable digital banking services. The Role & Expectations We are looking for a Senior Java Developer who embraces a blended capability role. Beyond standard development tasks, you will be expected to champion and drive backend testing within your agile team. You should be comfortable working in a modern, large-scale banking platform and proactively using AI-powered tools to optimize your daily workflow. What you will do Design, develop, test, and maintain backend services that power digital banking platforms. Drive backend testing activities (performance, unit, integration, and API testing) ensuring highly reliable and scalable solutions. Leverage AI-powered tools as a standard part of your daily development, testing, and delivery practices. Collaborate closely with business stakeholders to understand requirements and translate business needs into technical solutions. Contribute to the full product lifecycle—from technical design and implementation to continuous improvement and operational support. Work collaboratively within a cross-functional agile team based in a vibrant Warsaw hub. What we expect (Must-haves) Strong experience as a Backend Developer (Regular to Senior level). Solid proficiency in Java 21+ , REST APIs, and microservices architecture. Hands-on experience with Spring Boot 3.4 , Spring WebFlux, and Hibernate. Experience in test automation ( JUnit5, Cucumber, WireMock ). Working knowledge of Git, Maven, Jenkins, Oracle DB/DB2/SQL, and Splunk. Strong understanding of SOLID principles (knowledge of reactive programming is a major advantage). Mandatory experience in utilizing AI tools in software development. Fluent English (essential for daily communication in an international environment). Nice-to-haves Frontend development experience (JavaScript, TypeScript, Angular 2+). Familiarity with testing tools and frameworks like Playwright, qTest, and Gherkin. ISTQB Foundation certification. What is offered Salary: Up to 150 PLN/h net + VAT. Contract: B2B agreement Work model: Hybrid (3 days per week in the Warsaw office).