Senior Software Engineer (m/k)

🏢 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: 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 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 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: Hybrid Senior Java Backend Developer role in Krakow focused on building secure, scalable distributed microservices for modern banking messaging platforms. The role covers application design and development, quality standards, testing, automation, and technical mentoring within an Agile product team. 🗂️ Requirements: 5+ years of senior experience with Java, Spring Boot, and Kubernetes, Hands-on AWS cloud experience, CI/CD experience with GitHub, Jira, Jenkins, Maven, and Groovy, API design expertise: Swagger, OpenAPI 3.0, REST, JSON, microservices, OAuth 2.0 authentication and authorization experience, Kong API Gateway experience, TDD and Agile/Scrum development experience, Ability to translate business requirements into technical solutions, Communicative English proficiency, Legal right to work in Europe 📃 Skills: Java, Spring, Kubernetes, AWS, GitHub, Jira, Jenkins, Maven, Groovy, Swagger, OpenAPI, REST, JSON, Microservices, OAuth, Kong, TDD, Scrum 🏢 Description: Kick-start innovation in banking technology — develop scalable, secure, and high-performing microservices! Krakow-based opportunity with hybrid work model (up to 3 remote days per week). As a Senior Java Backend Developer – Cloud and Microservices Expertise , you will be working for our client, a leading financial institution dedicated to delivering state-of-the-art messaging solutions to enhance customer engagement. Your expertise will drive the design and development of distributed systems, supporting the modernization and standardization of critical messaging platforms. Join us and contribute to shaping the future of banking communication technology. Your main responsibilities: Applying your technical expertise to develop high-quality applications/systems in line with requirements and standards. Collaborating within a multi-disciplinary, Agile product team to design and build distributed microservices using modern technology stacks. Defining and maintaining technical quality standards across platforms. Building strong decision-making and problem-solving skills within your area of expertise. Producing efficient, maintainable code that aligns with business needs and technical dependencies. Conducting thorough unit testing to ensure software performance and reliability. Challenging code and design quality to uphold industry standards and project excellence. Contributing to automation test coverage and quality assurance processes. Maintaining effective communication with team members and stakeholders. Promoting innovative technologies and mentoring engineering colleagues. You’re ideal for this role if you have: Minimum of 5 years’ senior experience in Java, Spring Boot, and Kubernetes. Practical experience working with Cloud platforms, especially AWS. Strong knowledge of CI/CD tools such as GitHub, Jira, Jenkins, Maven, and Groovy. Expertise in API design standards: Swagger, OpenAPI 3.0, REST, JSON, Microservices architecture. Knowledge of authentication and authorization via OAuth 2.0, with experience using Kong API Gateway. Familiarity with Agile testing methodologies, particularly TDD, and extensive Agile/Scrum development experience. Ability to work closely with business stakeholders to translate functional requirements into robust technical solutions. Strong problem-solving capability with a focus on innovative, scalable solutions. It is a strong plus if you have: Experience with additional cloud services or certifications. Knowledge of DevOps practices beyond the core technologies listed. Language Required for the role: English – Communicative proficiency essential for effective collaboration and stakeholder engagement. Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.