
Infotree Service Sweden Filial · Warsaw
Location: Warsaw (Poland) Working model: hybrid (from time to time to the office) Contract type: B2B Contract duration: 12 months (with the possibility of ex...
Location: Warsaw (Poland)
Working model: hybrid (from time to time to the office)
Contract type: B2B
Contract duration: 12 months (with the possibility of extension)
Key Responsibilities
Requirements
We are seeking a skilled and detail-oriented Java developer to join the Payments Engineering team. The candidate will work in a pod with 3-4 experienced Java developers and focus on adapting legacy applications for non-discretionary ISO20022 changes, which is a new financial messaging standard. An ideal candidate thrives in complex environments, is able to work under time pressure, is keen to understand business logic and excels at reverse engineering a complex code base to implement high-impact changes. Key Responsibilities: * Participate in requirements gathering sessions with business users * Participate in analysis, solution design and planning the work with the Engineering team * Implement and test changes, participate in code reviews, assist in UAT and code releases * Think outside the box when implementing changes and improve the stack as you go along. The position requires 4 days/week in the office. Qualifications: * A Bachelor's or Master's degree in a computational field (Computer Science, Engineering, Applied Mathematics or a related quantitative discipline) * 4+ years of relevant work experience. * A solid grasp of Java, Spring, Hibernate, and DB2 * Spring Boot — dependency injection, auto-configuration, Spring Data, Spring Security * Apache Kafka — producers, consumers, Kafka Streams (stateful processing, state stores, aggregation), and Kafka Connect * MongoDB — document modelling, Spring Data MongoDB * Maven — multi-module project management, dependency resolution, build lifecycle * Docker — containerization, image builds * RESTful API design and development * Experience with event-driven / microservices architectures in a distributed systems environment * Familiarity with Git and CI/CD pipelines (GitLab CI preferred) Preferred: * Angular * IBM MQ / JMS — queue managers, channels * Infrastructure as Code — infrastructure provisioning and management * ISO 20022 or financial messaging standards (SWIFT, CBPR+, FIN) * Python scripting * Experience in financial services, payments, or banking technology * Strong analytical skills * Ability to collaborate effectively and work in a global team * Ability to stay commercially focused, whilst not losing sight of code quality * Good communication skills. Strong work ethic, ownership, willingness to engage and be challenged
For our client we are looking for a Middleware Engineer for DC migration project, to join the team in an onsite working model. Location: Warsaw (Poland) Working model: on site (5 days/week) Contract type: CoE/B2B Contract duration: until 30.06.2027 About the Company Join a dynamic, globally-focused organization leading transformative projects in the financial technology sector. This innovative company excels in delivering cutting-edge digital solutions to empower businesses and enhance customer experiences. With a strong emphasis on teamwork, creativity, and professional development, this is the perfect environment for ambitious professionals looking to make an impact in the tech-driven world. The following technical qualifications are required to carry out Middleware project tasks. Knowledge of tools and application environments: * BMC Control-M * Oracle Application Express (APEX) * Oracle Data Integrator 12c * Oracle Internet Directory 11g / 12c * Oracle Forms 11g / 12c * Oracle Reports 11g / 12c * Oracle Rest Data Service (ORDS) * Oracle Service Bus 11g / 12c * Oracle WebLogic 11g / 12c * PL/SQL * Perl / Powershell / Shell / Bash / Python * Rundeck / Ansible You will be expected to: · Closely work with FTS Application & Middleware Team carrying out BAU tasks; · Closely work with PMs driving the subsequent actions building, testing and migrating to new environments, not excluding preparation and placement of infrastructure build, configuration or access request and addressing blockers on the road; · Diagnosing and solving technical problems; · Monitoring environments for performance and reliability; · Produce of quality, live documentation (using Confluence). Individuals performing the services are expected to have following characteristics: · Recognizing the challenges related to application migration from one data center to the other; · Experience working in similar roles / projects (application migrations); · Excellent communication skills, good written and spoken Polish and English language and ability to work with variety of SMEs from several countries and socialize the technical scope, challenges and solutions among them; · Understanding of availability, performance, monitoring and resilience aspects for semi real time online transaction systems and mass transaction processing systems; · Understanding of infrastructure aspects, network solutions, load balancing, TLS; · Responsibility: care for product quality, making and keeping commitments; · Cooperation: the ability to share knowledge and experience, find compromises, build correct relationships within the local organization and in the corporation.
🚀 We're Hiring: Full-stack Developer (React/Java) | Financial Services You'll work alongside experienced engineers, building and enhancing business-critical applications used within a front-office trading environment. The platform processes significant trading volumes daily and plays a key role in the firm's success. Requirements: 🔹 4+ years of commercial frontend development experience 🔹 1–2 years of commercial backend development experience (Java or Python) 🔹 Strong React (Hooks, Context API) and JavaScript skills 🔹 Experience with modern CSS (CSS-in-JS, SCSS) 🔹 Knowledge of design patterns, Jest, npm, CI/CD, and GitLab 🔹 Experience building and consuming REST APIs ⭐ Nice to have: • AG Grid • Cypress • Understanding of UX principles • Experience working in financial services or trading environments