Java Architect | Hybrid Krakow

🏢 Summary: Long-term opportunity for a Full-Stack Java Developer to modernize a business-critical Collateral & Margining platform within a global investment banking environment. The role focuses on building and maintaining Java-based microservices while contributing to a transformation from monolithic systems to a cloud-native architecture. You will work across the full SDLC using modern Agile, DevOps, and automated testing practices. 🗂️ Requirements: Strong experience with Java 17/21, Hands-on experience with Spring Boot and microservices architecture, Solid knowledge of PostgreSQL, Experience with DevSecOps pipelines, Experience working in Agile and DevOps environments, Strong TDD practice using JUnit and integration testing, Experience with Cucumber for E2E testing, Experience delivering complex systems to production, Experience with REST APIs and messaging systems 📃 Skills: Java, Spring, SpringBoot, SpringCloud, Angular, TypeScript, PostgreSQL, Microservices, REST, MQ, Solace, Ansible, JUnit, Cucumber, DevSecOps, CICD, Redis, Hazelcast, Coherence, GCP, AWS, Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon, HTML5, GitHubCopilot 🏢 Description: Full‑Stack Java Developer – Global Investment Banking Platform (Kraków) B2B| Krakow | Hybrid: 6 days per month A global investment bank is expanding its engineering hub in Kraków and is looking for an experienced Senior and Mid Level Full‑Stack Java Developer’s to join a long‑term programme modernising a business‑critical Collateral & Margining platform used across global markets. This is a chance to join a mature engineering organisation driving a multi‑year transformation from monolithic systems to a modern, microservices‑based architecture. You’ll work on high‑impact technology used by thousands of institutional clients worldwide, while contributing to a brand‑new platform built with the latest open‑source tooling. About the Team & Platform The Collateral technology group delivers end‑to‑end solutions for a cross‑asset trading and risk environment. The team is currently: Supporting a large‑scale, business‑critical monolithic platform Building a new microservices‑based collateral platform using modern engineering practices Accelerating adoption of Agile, DevOps, AI‑assisted development, CI/CD, and cloud-native tooling Tech stack includes: Java 17/21, Spring Boot 3.5, Spring 6, Spring Cloud, Angular 17, TypeScript, REST APIs, Message Queues, Ansible, and modern open‑source infrastructure. Role Overview As a Senior Full‑Stack Java Developer, you will: Design, build, and maintain high‑quality Java microservices Contribute across the full SDLC, from design to production support Apply Agile and DevOps principles to improve delivery velocity Use TDD (JUnit), integration tests, regression tests, and Cucumber for E2E scenarios Collaborate closely with QA, product, and architecture teams Mentor junior engineers and support knowledge‑sharing across the team Support production systems: incident resolution, monitoring, and problem management Build automation and tooling to improve operational efficiency Essential Experience Strong experience with Java 17/21, Spring Boot, and microservices Solid knowledge of PostgreSQL and DevSecOps pipelines Experience working in Agile and/or DevOps environments Strong communication skills and ability to collaborate across global teams Proven experience delivering complex systems from concept to production Ability to translate functional requirements into scalable technical solutions Strong TDD discipline (JUnit, integration tests, Cucumber) Desirable Skills Experience with AI‑assisted development tools (e.g., GitHub Copilot) Spring Cloud components (Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon) Distributed caching/in‑memory data stores (Redis, Hazelcast, Coherence) REST APIs and messaging (MQ, Solace) Automated deployment tools (Ansible) TypeScript, Angular, HTML5 Cloud exposure (GCP/AWS) Why Join? Work on a mission‑critical global banking platform Contribute to a major multi‑year transformation Join a stable, established engineering organisation with modern practices Influence architecture, tooling, and engineering standards Long‑term project with strong investment and roadmap clarity

🏢 Summary: Long-term hybrid Java Engineer role on a project for a major international Swiss investment bank, focused on building and maintaining microservices and data streaming solutions in a modern cloud environment. The position requires deep expertise in Java and related enterprise technologies, with work in AI-assisted development and secure, scalable architectures. Opportunity to work with modern technologies in an international setting with strong growth potential. 🗂️ Requirements: 15+ years of experience in Java development, Extensive experience with Flowable, Strong knowledge of Spring Boot, Experience with ORM frameworks (JPA, iBatis), Knowledge of security standards (Azure AD, OAuth), Experience with Kafka, Experience with CosmosDB, Experience with PostgreSQL, Experience with Redis, Experience in building REST services, Experience with Azure cloud, Experience with Docker, Experience with Kubernetes, Experience with Maven, Experience with Gradle, Experience with microservices architecture, Experience with data streaming architectures, Experience with AI-assisted software development 📃 Skills: Java, Flowable, SpringBoot, JPA, iBatis, AzureAD, OAuth, Kafka, CosmosDB, PostgreSQL, Redis, REST, Azure, Docker, Kubernetes, Maven, Gradle, Microservices, DataStreaming, AI 🏢 Description: We are currently looking for talented and experienced Java Developer to join a long-term project with a major international Swiss investment bank operating in the financial sector. 📍 Location: Wroclaw or Krakow 🏢 Hybrid model: 3 days per week from the office Java Engineer with extensive knowledge (15+ years) of Java Flowable, Spring Boot, ORM frameworks (JPA, iBatis) Security (Azure AD, OAuth), Kafka, CosmosDB PostgresSQL, Redis, REST, Azure, Docker, Kubernetes, Maven Gradle, microservices and data streaming architectures and AI‑assisted software development. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Long-term hybrid opportunity for a senior Java Engineer to join a major international Swiss investment bank, working on modern microservices and data streaming architectures. The role focuses on backend development using Java and related enterprise technologies within a complex financial environment. It offers stable cooperation and involvement in impactful, large-scale projects. 🗂️ Requirements: 15+ years of experience with Java, Strong experience with Flowable, Strong experience with Spring Boot, Experience with ORM frameworks (JPA, iBatis), Experience with Azure AD and OAuth security, Experience with Kafka, Experience with CosmosDB, Experience with PostgreSQL, Experience with Redis, Experience with REST APIs, Experience with Azure, Experience with Docker, Experience with Kubernetes, Experience with Maven, Experience with Gradle, Experience with microservices architecture, Experience with data streaming architectures, Experience with AI-assisted software development 📃 Skills: Java, Flowable, SpringBoot, JPA, iBatis, AzureAD, OAuth, Kafka, CosmosDB, PostgreSQL, Redis, REST, Azure, Docker, Kubernetes, Maven, Gradle, Microservices, DataStreaming, AI 🏢 Description: We are currently looking for talented and experienced Java Developer to join a long-term project with a major international Swiss investment bank operating in the financial sector. 📍 Location: Wroclaw or Krakow 🏢 Hybrid model: 3 days per week from the office Java Engineer with extensive knowledge (15+ years) of Java Flowable, Spring Boot, ORM frameworks (JPA, iBatis) Security (Azure AD, OAuth), Kafka, CosmosDB PostgresSQL, Redis, REST, Azure, Docker, Kubernetes, Maven Gradle, microservices and data streaming architectures and AI‑assisted software development. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Long-term hybrid opportunity for an experienced Java Full Stack Developer to work on strategic UI and platform initiatives for a major Swiss investment bank. The role focuses on Java, React, and GUI development within a highly specialized financial systems environment. 🗂️ Requirements: 8+ years of experience, Java expertise, React expertise, GUI development experience, Full stack development experience, Experience working on complex enterprise systems 📃 Skills: Java, React, GUI 🏢 Description: We are currently looking for talented and experienced Java Full Stack Developer to join a long-term project with a major international Swiss investment bank operating in the financial sector. 📍 Location: Krakow 🏢 Hybrid model: 3 days per week from the office Experience: 8+ years Required Skills: Java React GUI Development Additional Information: Critical resource for delivery: O ne of the 2 developers globally. Oskar drives key UI initiatives and is the sole owner of stream-level deliverables such as LMF–Vantage integration. Highly specialized expertise: Deep LMF/F2B architectural knowledge, anchoring dependencies across UI and platform layers. Unique skillset with significant domain and system knowledge concentration. Immediate risk if lost: Creates a single point of failure, materially increasing execution risk and jeopardizing committed timelines. Replacement impact: High ramp-up effort leading to loss of momentum, reduced delivery stability, and elevated risk to strategic initiatives. Benefits ✅ Stable long-term cooperation with opportunity for extension Opportunity to work with modern technologies in an international environment Professional growth and continuous development opportunities Participation in challenging and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Senior/Mid Full‑Stack Java Developer role focused on modernising and rebuilding a business‑critical Collateral & Margining platform into a microservices‑based architecture. The position involves end‑to‑end development of Java microservices, full SDLC ownership, and production support within a global investment banking environment. You will contribute to a long‑term transformation using modern Agile, DevOps, and cloud‑native practices. 🗂️ Requirements: Strong experience with Java 17/21, Hands-on experience with Spring Boot and microservices architecture, Solid knowledge of PostgreSQL, Experience with DevSecOps or CI/CD pipelines, Strong TDD practice using JUnit and Cucumber, Experience building and consuming REST APIs, Experience with messaging systems, Experience working in Agile or DevOps environments, Ability to deliver complex systems from design to production 📃 Skills: Java, Spring, SpringBoot, SpringCloud, Angular, TypeScript, REST, PostgreSQL, Microservices, DevSecOps, CI/CD, JUnit, Cucumber, Ansible, Redis, Hazelcast, Coherence, MQ, Solace, GCP, AWS, Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon, HTML5, TDD, DevOps, Agile, GitHubCopilot 🏢 Description: Full‑Stack Java Developer – Global Investment Banking Platform (Kraków) B2B | 6 days per month in the office | 1300-1800 PLN A global investment bank is expanding its engineering hub in Kraków and is looking for experienced Senior and Mid Level Full‑Stack Java Developer’s to join a long‑term programme modernising a business‑critical Collateral & Margining platform used across global markets. This is a chance to join a mature engineering organisation driving a multi‑year transformation from monolithic systems to a modern, microservices‑based architecture. You’ll work on high‑impact technology used by thousands of institutional clients worldwide, while contributing to a brand‑new platform built with the latest open‑source tooling. About the Team & Platform The Collateral technology group delivers end‑to‑end solutions for a cross‑asset trading and risk environment. The team is currently: Supporting a large‑scale, business‑critical monolithic platform Building a new microservices‑based collateral platform using modern engineering practices Accelerating adoption of Agile, DevOps, AI‑assisted development, CI/CD, and cloud-native tooling Tech stack includes:Java 17/21, Spring Boot 3.5, Spring 6, Spring Cloud, Angular 17, TypeScript, REST APIs, Message Queues, Ansible, and modern open‑source infrastructure. Role Overview As a Senior Full‑Stack Java Developer, you will: Design, build, and maintain high‑quality Java microservices Contribute across the full SDLC, from design to production support Apply Agile and DevOps principles to improve delivery velocity Use TDD (JUnit), integration tests, regression tests, and Cucumber for E2E scenarios Collaborate closely with QA, product, and architecture teams Mentor junior engineers and support knowledge‑sharing across the team Support production systems: incident resolution, monitoring, and problem management Build automation and tooling to improve operational efficiency Essential Experience Strong experience with Java 17/21, Spring Boot, and microservices Solid knowledge of PostgreSQL and DevSecOps pipelines Experience working in Agile and/or DevOps environments Strong communication skills and ability to collaborate across global teams Proven experience delivering complex systems from concept to production Ability to translate functional requirements into scalable technical solutions Strong TDD discipline (JUnit, integration tests, Cucumber) Desirable Skills Experience with AI‑assisted development tools (e.g., GitHub Copilot) Spring Cloud components (Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon) Distributed caching/in‑memory data stores (Redis, Hazelcast, Coherence) REST APIs and messaging (MQ, Solace) Automated deployment tools (Ansible) TypeScript, Angular, HTML5 Cloud exposure (GCP/AWS) Why Join? Work on a mission‑critical global banking platform Contribute to a major multi‑year transformation Join a stable, established engineering organisation with modern practices Influence architecture, tooling, and engineering standards Long‑term project with strong investment and roadmap clarity

🏢 Summary: Full Stack Java Developer role in a hybrid model, focused on building and maintaining cloud-native financial applications using modern Java and React technologies. The position involves backend development with Java 17+ and Spring Boot, frontend development with React, and deployment in Azure cloud environments with DevOps practices. 🗂️ Requirements: 7+ years hands-on experience with Java 17+, 5+ years experience in cloud applications, 5+ years experience with web technologies, Strong hands-on experience with React, 7+ years experience with frameworks and development tools, 5+ years experience with PostgreSQL, 2+ years experience in DevOps, Experience with Spring Boot, Experience with RDBMS 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, SQL, PostgreSQL, Oracle, SQLServer, Azure, Terraform, Docker, Kubernetes, AKS, Linux, DevOps, CI/CD, CosmosDB, Elasticsearch, Lucene, Neo4j 🏢 Description: Full Stack Java Developer 📌 We are looking for Full Stack Java Developer on behalf of our client to join to the leader from the largest Swiss financial holding company. Work model : Hybrid 2-3 days from Cracow Job description: Strong experience with Java 17+, Spring Boot 3, RDBMS (SQL Server / Oracle) Experienced in web UI development using React 18+ (hooks) / Typescript Experience of DevOps CI/CD, building and deploying pipelines Hands on experience or strong interest in building cloud native applications in Azure via Terraform would be very desirable Knowledge of containerization: Docker, Kubernetes / AKS, Linux/ scripting is a plus Experience in NoSQL / Search Engines: Azure Cognitive Search, Cosmos DB, Elasticsearch, Apache Lucene, Graph Databases (neo4j or similar) is a plus Mandatory checks: 7+ Years of hands on experience on Java 17+ or higher 5+ years of hands on experience in cloud applications 5+ years of experience on Web Technologies with strong hands-on in React JS 7+ years of expereince in Framework and Tools 5+ years of experience on postgres 2+ Years of Experience in Devops ✅ Benefits: Work with modern technologies and international teams Long-term and stable cooperation Professional growth opportunities 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Senior Full Stack Developer role in a long-term banking transformation program focused on modernizing wholesale credit and lending platforms. The position involves enhancing risk and collateral systems, improving data quality and governance, and contributing to core platform uplift. Full-time B2B contract with hybrid work model in Kraków. 🗂️ Requirements: Senior-level Java Full Stack development experience, Strong PostgreSQL experience, Experience with data sourcing, transformation and consumption processes, Ability to perform code reviews, Experience working in large-scale system modernization projects, Fluent English for technical communication 📃 Skills: Java, PostgreSQL, SQL, Git, REST, Claude, Quantexa 🏢 Description: 🌍Work mode: hybrid: 2x per week in the office in Kraków. ⏰Start: from June. 📝Contract: B2B. ⚙️Recruitment process: technical interview, live coding. ⏳Duration: >12 months contracts. 📕Project language: English. 💼Industry: Banking. 💻Workload: Full time. We are seeking high-performing Senior Full Stack Developers to join our Wholesale Credit & Lending Technology team. This pivotal role is integral to a major 3-4 year transformation program focusing on modernizing core credit and lending technology platforms across global markets. Main Responsibilities: Contribute to the uplift and refresh of wholesale credit and lending models. Support key risk and collateral management functions. Improve data quality, traceability, and governance. Review data sourcing, transformation, and consumption processes. Collaborate within a fast-paced engineering team. Key Requirements: Java Full Stack Development Strong experience with PostgreSQL (Postgres) Progressive engineering mindset Proven code review capability High attention to detail Pragmatic engineering approach Nice to Have: Exposure to Claude AI tooling Experience with Quantexa Other Details: This position requires office attendance 2 times per week (Cracow) and is part of a global-scale technology rollout. The urgency is high due to previous hiring challenges in fulfilling this critical transformation initiative.

🏢 Summary: Senior Full Stack Developer role in a long-term banking transformation program focused on modernizing wholesale credit and lending platforms. The position involves enhancing risk and collateral systems, improving data governance, and contributing to core platform uplift within a global rollout. Hybrid work model with full-time B2B contract and technical interview process. 🗂️ Requirements: Strong experience in Java Full Stack development, Strong experience with PostgreSQL, Experience in data sourcing and transformation processes, Experience with data quality and governance improvements, Ability to perform code reviews, Experience working in fast-paced engineering teams, Fluent English for technical communication 📃 Skills: Java, PostgreSQL, SQL, Git, Claude, Quantexa 🏢 Description: 🌍Work mode: hybrid: 2x per week in the office in Kraków. ⏰Start: from June. 📝Contract: B2B. ⚙️Recruitment process: technical interview, live coding. ⏳Duration: >12 months contracts. 📕Project language: English. 💼Industry: Banking. 💻Workload: Full time. We are seeking high-performing Senior Full Stack Developers to join our Wholesale Credit & Lending Technology team. This pivotal role is integral to a major 3-4 year transformation program focusing on modernizing core credit and lending technology platforms across global markets. Main Responsibilities: Contribute to the uplift and refresh of wholesale credit and lending models. Support key risk and collateral management functions. Improve data quality, traceability, and governance. Review data sourcing, transformation, and consumption processes. Collaborate within a fast-paced engineering team. Key Requirements: Java Full Stack Development Strong experience with PostgreSQL (Postgres) Progressive engineering mindset Proven code review capability High attention to detail Pragmatic engineering approach Nice to Have: Exposure to Claude AI tooling Experience with Quantexa Other Details: This position requires office attendance 2 times per week and is part of a global-scale technology rollout. The urgency is high due to previous hiring challenges in fulfilling this critical transformation initiative.

🏢 Summary: Senior Full Stack Developer role in a long-term banking transformation program focused on modernizing wholesale credit and lending platforms. The position involves enhancing data quality, risk and collateral systems, and core credit models within a global engineering team. Hybrid work model with high-impact responsibilities in a multi-year technology rollout. 🗂️ Requirements: Strong experience in Java Full Stack development, Strong experience with PostgreSQL, Experience with data sourcing and transformation processes, Ability to perform code reviews, Experience working on credit or lending systems, Professional proficiency in English 📃 Skills: Java, PostgreSQL, SQL, FullStack, Git, REST, DataModeling, ETL 🏢 Description: 🌍Work mode: hybrid: 2x per week in the office in Kraków. ⏰Start: from June. 📝Contract: B2B. ⚙️Recruitment process: technical interview, live coding. ⏳Duration: >12 months contracts. 📕Project language: English. 💼Industry: Banking. 💻Workload: Full time. We are seeking high-performing Senior Full Stack Developers to join our Wholesale Credit & Lending Technology team. This pivotal role is integral to a major 3-4 year transformation program focusing on modernizing core credit and lending technology platforms across global markets. Main Responsibilities: Contribute to the uplift and refresh of wholesale credit and lending models. Support key risk and collateral management functions. Improve data quality, traceability, and governance. Review data sourcing, transformation, and consumption processes. Collaborate within a fast-paced engineering team. Key Requirements: Java Full Stack Development Strong experience with PostgreSQL (Postgres) Progressive engineering mindset Proven code review capability High attention to detail Pragmatic engineering approach Nice to Have: Exposure to Claude AI tooling Experience with Quantexa Other Details: This position requires office attendance 2 times per week and is part of a global-scale technology rollout. The urgency is high due to previous hiring challenges in fulfilling this critical transformation initiative.

🏢 Summary: Full-stack Java developer role in the financial sector focused on building scalable microservices and modern frontend applications in an Agile environment. The position involves backend and frontend development using Java, Angular, cloud-native technologies, and distributed systems integrations. Hybrid work model with a long-term international project and competitive B2B rate. 🗂️ Requirements: 5+ years of commercial Java development experience, 2+ years of Angular experience, Knowledge of Spring Framework, Experience with microservices architecture, Experience with Docker, Experience with Kubernetes, Experience with Kafka and distributed systems, Knowledge of REST APIs, Knowledge of SQL, Experience with Oracle databases, Experience with Git, Understanding of Clean Code principles, Understanding of Continuous Integration, Experience integrating REST and SOAP services, Knowledge of XML, Knowledge of JSON, Knowledge of Avro, English level B2 or higher 📃 Skills: Java, Angular, React, Spring, Docker, Kubernetes, Kafka, REST, SQL, Oracle, Git, SOAP, XML, JSON, Avro, Jenkins, ArgoCD 🏢 Description: Senior Java Full-stack Developer 📍 Location: Warsaw, Gdańsk or Gdynia 🏢 Work model: Hybrid (3 days per week in the office) 📅 Project duration: August 2026 – January 2027 💰 B2B rate: up to 157 PLN/h ⏰ Full-time (40h/week) About the project Join an international financial institution and become part of a team responsible for building modern, scalable solutions supporting one of the company's key business domains. You will work in an Agile environment, developing cloud-ready microservices and integrating modern applications with existing enterprise platforms. This role combines backend and frontend development while giving you the opportunity to work with modern technologies, distributed systems, and high-performance applications. Your responsibilities Design, develop and maintain full-stack applications. Build and enhance Java-based microservices. Develop modern frontend solutions using Angular. Integrate applications using REST APIs, Kafka, MQ and Oracle databases. Participate in migration and transformation of existing systems. Ensure application quality, scalability and performance. Collaborate with architects, analysts, QA engineers and business stakeholders. Contribute to code reviews and technical improvements. We are looking for someone who has Minimum 5 years of commercial experience with Java development. At least 2 years of experience with Angular (React is also valued). Strong knowledge of Spring Framework . Experience building microservices architectures . Practical experience with Docker and Kubernetes . Experience working with Kafka and distributed systems. Knowledge of REST APIs , SQL and Oracle databases. Experience with Git . Understanding of Clean Code , Continuous Integration and software engineering best practices. Experience integrating REST and SOAP services. Good understanding of XML, JSON and Avro . Good command of English (B2 or higher) . Nice to have Jenkins Argo CD Event Sourcing Schema Registry DevOps practices What we offer Competitive B2B rate of up to 157 PLN/hour . Long-term international project. Opportunity to work with modern cloud-native technologies. Challenging projects within the financial sector. Professional, collaborative and Agile environment. Work with experienced engineers on large-scale enterprise solutions.