Senior Java / Full-Stack Software Developer

🏢 Summary: Senior Java Full-Stack Developer role for international projects, focused on end-to-end development of web applications in a cloud-based environment. The position involves backend and frontend development, design and testing activities, and collaboration within agile teams. It is a fully remote B2B contract with long-term cooperation. 🗂️ Requirements: Bachelor’s degree in Engineering, IT, Science, or related technical field, Minimum 5 years of commercial experience in corporate IT, Strong experience with Java and Java frameworks, Commercial experience with frontend technologies, Solid knowledge of JavaScript, HTML5, CSS3, Experience with Angular, Knowledge of databases and SQL, Experience with REST and SOAP web services, Experience with AWS or Azure, Knowledge of Clean Code principles, Experience with unit testing, Experience with source code management, Experience with CI/CD and automated deployments, Very good English (spoken and written), Experience in agile (Scrum) environments 📃 Skills: Java, Spring, JavaScript, HTML5, CSS3, Angular, SQL, REST, SOAP, AWS, Azure, CI/CD, Git, Scrum 🏢 Description: Senior Java Full-Stack Developer – Remote Contract type: B2B Hourly rate: 160–170 PLN/h Location: Remote We are looking for an experienced Senior Java Full-Stack Developer to join international implementation projects. The role involves end-to-end development of web applications, close collaboration with agile teams, and active participation in design and testing activities. The position is well suited for a developer who values clean code, quality, and teamwork in a cloud-based environment. Responsibilities Work as a Senior Java Full-Stack Developer across multiple implementation streams Develop and maintain web-based applications using Java and modern frontend technologies Write and maintain unit tests to ensure software quality Collaborate with agile team members to achieve project and client goals Participate in design reviews, testing activities, and technical discussions Requirements Bachelor’s degree in Engineering, IT, Science, or another technical field Minimum 5 years of commercial experience in a corporate IT environment Strong experience with Java and commonly used Java frameworks Commercial experience with frontend technologies and web-based applications Solid knowledge of JavaScript, HTML5, CSS3, and responsive single-page application design Experience with Angular Knowledge of databases and SQL Experience with web services and APIs (REST, SOAP) Experience deploying applications on cloud platforms such as AWS or Azure Knowledge of Clean Code principles and unit testing Experience with source code management, CI/CD, and automated deployments Very good English, both spoken and written Experience working in international and agile (Scrum) environments Strong communication and collaboration skills Nice to have Experience with Kafka or RabbitMQ Hands-on experience with microservices architecture Knowledge of Docker and Kubernetes Relevant certifications (Java, Spring, SQL, AWS, Azure) Knowledge of German or another European language Benefits Medicover healthcare package Multisport card Access to an e-learning platform Group life insurance We offer Fully remote cooperation Competitive hourly rate: 160–170 PLN/h (B2B) Long-term cooperation in international projects Modern technology stack and agile working environment

🏢 Summary: Senior Java Full-Stack Engineer role focused on designing and evolving scalable cloud-based products using Java and modern frontend technologies. The position involves building robust backend services, contributing to architecture decisions, and working with cloud-native deployments in a remote B2B setup. It requires strong independence and experience delivering high-quality, production-grade systems. 🗂️ Requirements: Senior-level software engineering experience, Strong hands-on experience with Java, Backend development expertise, Full-stack development experience, Experience with modern frontend frameworks, Understanding of cloud platforms, Experience with cloud-native architectures, Experience building production-grade systems, Ability to design scalable architectures, Experience with CI/CD and DevOps practices 📃 Skills: Java, GCP, AWS, Azure, Kubernetes, Docker, CI/CD, REST, API, Microservices, HTML, CSS, JavaScript, DevOps, Observability 🏢 Description: We are seeking a highly skilled Java Full-Stack Engineer to join our engineering team in building and evolving cloud-based products. The ideal candidate will possess extensive experience in software development, particularly with Java and modern frontend technologies. A strong understanding of cloud platforms, specifically GCP, is highly desirable, along with the ability to work independently within a senior engineering environment. What we offer: Remote Role Long Term B2B Contract Rate: 170-190 PLN/H + VAT Main Responsibilities Design, build, and maintain scalable full-stack applications using Java and modern frontend technologies. Develop robust backend services, APIs, and integrations. Work with cloud-native architectures and deployment models. Contribute to technical architecture and engineering decision-making. Improve reliability, performance, security, and maintainability of the platform. Collaborate closely with product, design, and engineering colleagues. Mentor other engineers and help raise the technical bar across the team. Explore and apply modern development practices, including AI-assisted and agentic coding workflows where relevant. Key Requirements Strong senior-level experience as a software engineer. Deep hands-on experience with Java and backend development. Solid full-stack development experience, including modern frontend frameworks. Good understanding of cloud platforms and cloud-native engineering. Ability to work independently and make sound technical decisions. Strong communication skills and the ability to collaborate across teams. Experience building production-grade systems with high standards for quality, scalability, and maintainability. Nice to Have Experience with Google Cloud Platform , though AWS or Azure experience is also relevant. Experience with Kubernetes, containers, CI/CD, observability, and modern DevOps practices. Knowledge of AI-assisted development tools, coding agents, or agentic coding workflows. Experience in fintech, identity, compliance, SaaS, or other high-trust environments. Other Details Preferred locations include Vilnius, Lithuania or elsewhere in Lithuania , with secondary options being Poland or remote within the EU . This role is suitable for experienced professionals keen on working with innovative technologies in a dynamic environment.

🏢 Summary: Senior Java Full-Stack Engineer role focused on designing and building scalable cloud-native applications with modern frontend and backend technologies. The position involves developing robust APIs and services, contributing to architecture decisions, and improving platform reliability, performance, and security. This is a long-term remote B2B contract within a senior engineering environment. 🗂️ Requirements: Senior-level experience in software engineering, Strong hands-on experience with Java, Experience in backend development, Full-stack development experience with modern frontend frameworks, Understanding of cloud platforms and cloud-native architectures, Experience building production-grade, scalable systems, Ability to design APIs and backend services, Knowledge of containers and CI/CD practices 📃 Skills: Java, GCP, AWS, Azure, Kubernetes, Docker, CI/CD, APIs, Microservices, Frontend, Cloud, DevOps 🏢 Description: We are seeking a highly skilled Java Full-Stack Engineer to join our engineering team in building and evolving cloud-based products. The ideal candidate will possess extensive experience in software development, particularly with Java and modern frontend technologies. A strong understanding of cloud platforms, specifically GCP, is highly desirable, along with the ability to work independently within a senior engineering environment. What we offer: Remote Role Long Term B2B Contract Rate: 170-190 PLN/H + VAT Main Responsibilities Design, build, and maintain scalable full-stack applications using Java and modern frontend technologies. Develop robust backend services, APIs, and integrations. Work with cloud-native architectures and deployment models. Contribute to technical architecture and engineering decision-making. Improve reliability, performance, security, and maintainability of the platform. Collaborate closely with product, design, and engineering colleagues. Mentor other engineers and help raise the technical bar across the team. Explore and apply modern development practices, including AI-assisted and agentic coding workflows where relevant. Key Requirements Strong senior-level experience as a software engineer. Deep hands-on experience with Java and backend development. Solid full-stack development experience, including modern frontend frameworks. Good understanding of cloud platforms and cloud-native engineering. Ability to work independently and make sound technical decisions. Strong communication skills and the ability to collaborate across teams. Experience building production-grade systems with high standards for quality, scalability, and maintainability. Nice to Have Experience with Google Cloud Platform , though AWS or Azure experience is also relevant. Experience with Kubernetes, containers, CI/CD, observability, and modern DevOps practices. Knowledge of AI-assisted development tools, coding agents, or agentic coding workflows. Experience in fintech, identity, compliance, SaaS, or other high-trust environments.

🏢 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.

🏢 Summary: Mid-level Full-Stack Developer role focused on building and modernizing a cloud-based practice management and CRM platform. The position involves a 60/40 split between Angular frontend and Node.js/Nest.js backend, contributing to migration from monolith to microservices and upgrading to the latest Angular version. Fully remote (Poland-based) with strong impact on architecture and product quality. 🗂️ Requirements: 2–3 years of commercial experience in full-stack web development, Commercial experience or strong willingness to work with Angular, Experience with Node.js backend development, Practical knowledge of Nest.js, Basic knowledge of SQL, Experience or willingness to implement automated E2E tests, Polish residency, Working proficiency in Polish, Notice period of 1 month or less 📃 Skills: Angular, Node.js, Nest.js, SQL, Playwright, Microservices, Cloud, ORM, E2E 🏢 Description: Position: Full-Stack Developer Location: Remote (Poland-based) Salary: 14500 – 19500 PLN / month Our client is an innovative software company delivering a modern, cloud-based practice management and CRM solution dedicated to professional services. The platform streamlines day-to-day operations, including workload management and automated document generation. The development team is highly autonomous, focused on refactoring their core product from a monolith into scalable microservices, migrating to the newest technology stacks, and fostering an environment with strong developer ownership. We are looking for a mid-level Full-Stack Developer (approx. 2–3 years of commercial experience) to join a tight-knit Polish development team. In this role, you will work on both frontend and backend tasks (approx. 60% Front-End and 40% Back-End workload), having a real impact on technology choices and product quality. Requirements: Around 2–3 years of commercial experience in full-stack web development. Professional experience or strong openness to working with Angular (the project is currently on Angular 6 and undergoing a migration to the latest stable version). Solid knowledge of backend development using Node.js, preferably with Nest.js (used for all new microservices). Basic understanding of SQL (complex queries are supported by in-house ORM and AI tools, backed by thorough code reviews). Familiarity with or interest in testing practices (manual testing with beta users and expanding automated E2E tests using Playwright ). Polish residency and working proficiency in Polish (mandatory for active participation in daily sync meetings). Notice period of 1 month or less . Mindset focused on autonomy, taking ownership of tasks, and willingness to challenge the status quo. Responsibilities: Developing new features and maintaining the cloud-based platform (60% FE / 40% BE split). Actively participating in architecture modernization (refactoring the monolith into microservices and migrating the legacy frontend to the latest Angular version). Writing clean, maintainable code and participating in peer code reviews. Ensuring software quality through self-testing and implementing automated E2E test scenarios with Playwright. Onboarding smoothly into the codebase (handling smaller bug fixes and minor features in Month 1, progressing to designing and delivering a major complex feature by Month 3). Attending daily team synchronization meetings (at 10:00 AM Polish time). Offer: Salary: 14500 – 19500 PLN / month (depending on experience). Contract type: Long-term B2B Contract (open to both permanent-like cooperation and 12-month fixed contracts). Working model: 100% Fully Remote work. Flexible working hours (with core presence during the 10:00 AM daily sync). Hardware: Company-provided laptop and necessary equipment. No on-call duties or weekend shifts. Great culture: High levels of engineering autonomy, flat structure, and direct impact on the final product. Fast recruitment process: 3 stages (1h Live Coding data processing task $\rightarrow$ ~3h Homework assignment $\rightarrow$ 1h final CTO interview) with rapid feedback provided within 1–2 business days after each stage.

🏢 Summary: Senior Fullstack Software Engineer role focused on building and deploying cloud-based systems using modern software craftsmanship practices and AI-assisted development tools. The position involves end-to-end software delivery, clean architecture, code reviews, testing, and improving delivery processes in a remote-first senior engineering team. 🗂️ Requirements: 5+ years of professional experience with Java or Kotlin, 3+ years of professional experience with JavaScript or TypeScript, Hands-on experience with SQL and NoSQL, Experience with AWS, GCP, or Azure, Experience with AI-assisted software development, Strong teamwork and collaboration skills 📃 Skills: Java, Kotlin, JavaScript, TypeScript, SQL, NoSQL, AWS, GCP, Azure, Microservices, TDD, BDD, DDD, Claude 🏢 Description: We are looking for a Senior Fullstack Software Engineer who is hungry to deliver quality software at pace, by utilising the latest technology trends and modern Software Craftsmanship techniques. Who are we ? We are a remote-first boutique software house company founded by a group of seasoned software experts (average experience in the team is 12 years). What connected all of us, despite a long-term relationship, is a passion for building Great Software that matters. We believe in people, so this is why the key values of Shaped Thoughts are autonomy and trust. Our people have a real and direct impact on what and how we build things. We put extra effort into ensuring everyone can make a difference and grow among other experts. Qualifications: 5+ years of professional experience with Java or/and Kotlin 3+ years of professional experience with JavaScript or/and TypeScript Hands-on experience with SQL and NoSQL Experience with cloud platforms (AWS / GCP / Azure) AI-assisted software development experience Nice to have: Microservices experience Understanding of distributed systems and event-driven architectures TDD, BDD practitioner Domain-Driven Design knowledge As a part of the team you will : Design, implement, code review, test and deploy cloud-based systems Develop software from start to finish - you ship it, you run it! Deliver quality technical solutions that come from a robust design and clean architecture Build & improve the software delivery process using tools such as Claude Code How do we work? We work as a team - all people can freely exchange knowledge and tasks, that’s why we’re looking for strong team players We believe in continuous improvement (Kaizen mindset) We’re happy to share knowledge and spend time learning our domain and new technologies We value asynchronous communication for work, however we meet in person to improve our personal relationships What do we offer ? Being a part of a strong senior team with an ability to learn and exchange knowledge Remote-first work environment B2B rate 140-190 PLN / hour, depending on your level of expertise Open-ended B2B contract or contract of employment Recruitment process It consists of the following stages: CV screening Tech screening (45 min) Live coding session (1h) Architecture task (1h) At least one of the stages must be completed on-site in one of the major cities: Wrocław, Poznań, Katowice, Kraków, Warszawa or Gdańsk. We actively encourage AI-assisted development in our daily work. However, during recruitment, we want to assess your individual skills - please don't use AI assistance unless explicitly permitted for a given stage.

🏢 Summary: B2B contract role for a Senior Java Developer focused on designing and maintaining scalable backend systems and APIs across diverse software projects, including AI-driven and legacy modernization initiatives. The position involves architectural input, code quality improvements, and deployment support in cloud environments within Agile teams. 🗂️ Requirements: Minimum 5 years of experience as a Java Developer, Commercial experience with Spring Boot or Hibernate, Strong knowledge of object-oriented programming and design patterns, Experience building and integrating RESTful APIs, Experience with SQL and NoSQL databases, Experience with cloud platforms (AWS, Azure, or GCP), Knowledge of CI/CD pipelines and version control systems, Experience working in Agile/Scrum teams, English proficiency at B2 level or higher, Experience with AI technologies or AI-powered solutions 📃 Skills: Java, Spring, SpringBoot, Hibernate, REST, SQL, NoSQL, PostgreSQL, MySQL, MongoDB, AWS, Azure, GCP, CI/CD, Git, OOP, Scrum, AI 🏢 Description: About position: We are currently building our talent pool for future Senior Java Developer roles. As our company is expanding, you may have the opportunity to work on a variety of software solutions across multiple initiatives, including projects we will be delivering in the future, from building native AI solutions to modernizing legacy systems. If you enjoy collaborating in a skilled team and are committed to delivering top-notch software, we’d love to connect. We're not prescriptive about background. Whether you've worked in fintech, SaaS, e-commerce, or enterprise systems, what matters is that you've shipped production software at scale, cared about its reliability, and learned from what broke. Who we are: We are Inspeerity (part of DevelopX group), engineering consultancy providing software development and consultancy. Our primary expertise is systems architecture and full stack development – from defining project requirements, to designing, building, and deploying software applications for web, backend, enterprise and mobile. We are crazy about technology, serious about people. TL;DR • Who : Senior Java Developer • Contract Type : B2B Framework Agreement. • Salary range: Up to 150 PLN/h • Company : Software House What you’ll be doing: Designing, implementing, and maintaining high-quality Java applications. Developing backend components and APIs to support scalable software solutions. Collaborating with cross-functional teams. Reviewing and refactoring code to ensure maintainability, performance, and security. Participating in technical design discussions and contributing to architecture decisions. Writing and maintaining technical documentation for systems, APIs, and processes. Supporting deployment and integration of applications in different environments. You will be the best fit if you have: 5 years of experience as a Java developer, preferably with exposure to Spring Boot, Hibernate, or similar frameworks. Strong understanding of object-oriented programming, design patterns, and clean code principles. Experience with RESTful APIs and web services integration. Familiarity with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB). Experience with cloud environments such as AWS, Azure, or GCP. Knowledge of CI/CD pipelines and version control systems (e.g., Git). Strong problem-solving skills and ability to troubleshoot complex issues. English level B2 or higher. Experience working in Agile/Scrum teams and contributing to iterative development. Experience with AI technologies, including using AI tools for development and building AI-powered features or applications. What we offer : Remote work or working from our Bialystok, Warsaw, Rzeszow offices. It's up to you! Collaboration with experienced and engaged people who will appreciate your work and support you whenever you need it 😊 Hybrid and flexible cooperation model based on a B2B Framework Agreement. Great working conditions and best equipment: Dell or MacBook, your choose. Good to know: We don’t require a degree. We don’t do whiteboard puzzles or trick questions. Our interview process is practical: a technical conversation and a chat about how you work. We value direct communication and intellectual curiosity. If you’re someone who gets excited about debugging a tricky concurrency issue - not because you have to, but because you want to understand it — we’ll get along well.

🏢 Summary: Remote Fullstack Java Developer role for a mission-critical trading platform, focused on building new features and enhancing existing distributed systems. The position involves full lifecycle development, performance optimization, and post-production support in collaboration with a US-based team. 🗂️ Requirements: Bachelor’s or Master’s degree in Computer Science or related field, 5–10 years of experience as Fullstack Developer, Strong knowledge of Java programming, Strong knowledge of algorithms and data structures, Experience with concurrency and multithreading, Experience with distributed systems, Experience with SQL and relational databases, Experience with NoSQL databases, Experience with high-speed messaging systems, Experience with UNIX or Linux systems 📃 Skills: Java, Nodejs, Angular, SpringBoot, JavaScript, HTML, CSS, JSON, Kafka, Tibco, Tervela, Redis, Cassandra, Oracle, SQL, PLSQL, Tomcat, WebLogic, WebSphere, Unix, Linux, NoSQL, Concurrency, Multithreading, Algorithms, DataStructures 🏢 Description: We are looking for a Fullstack Java Developer to join remotely one of the project for our American client from trading sector. We offer: Salary range: 45-55 USD/h on B2B +VAT without paid vacations depending on the experience, and technical testing 100% Remote job Working hours: Starting from 12:00 or ideally from 2 PM CET to have the overlap with the US team in the Eastern Time zone (especially during the onboarding process) Description of the Position: Perform software development and programming to create new features and enhance functionality on a mission critical platform. Adapt and extend existing re-usable components and libraries. Develop high quality software while meeting deadlines. Assist with rollout and post production support. Present ideas for system improvements. Design or upgrade existing software to ensure product performance and quality expectations are met. Job Responsibilities: ·       Creating new features and enhancing functionality on a mission critical platform ·       Adapts and extend existing re-usable components and libraries. ·       Develops high quality software while meeting deadlines ·       Presents ideas for system improvements ·       Design or upgrade an existing software to ensure product performance and quality expectations are met · Assists with rollout and post production support Required Qualifications: ·       Master’s or Bachelor's degree in Computer Science or related discipline ·       5-10 years of working experience as a full-stack developer, distributed systems experience is a plus ·       Excellent written and verbal communication skills ·       Strong ability to interpret business requirements ·       Must be a creative problem solver ·       Must demonstrate strong knowledge of algorithms, data structures, concurrency, and java programming Additional Preferred Experience: ·       Java, Nodejs, Angular, Spring Boot, JavaScript, HTML, CSS, JSON ·       Multi-threaded programming ·       Experience with algorithms, data structures, and concurrency ·       Kafka, Tibco Rendezvous, Tervela, or similar high-speed messaging system ·       Experience with distributed database systems like Redis, Cassandra or any other NoSQL database ·       Oracle PL/SQL programming, Proficiency in SQL ·       Tomcat, WebLogic, or WebSphere ·  UNIX / Linux operating systems ·  Experience with financial transaction systems ·  Basic knowledge of the fixed income and financial markets is a plus. ·  Excellent written and verbal communication skills ·  Strong ability to interpret business requirements ·  Must be a creative problem solver and should have good analytical thinking. This role isn't for you, but you have a friend who would be a good fit? Refer them and earn up to 5,000 PLN. Referral Program: Talent from your network

🏢 Summary: B2B contract opportunity for a Full Stack Developer focused on Java, React, and cloud-native technologies to build advanced planning applications and scalable backend/frontend systems. The role involves AI-assisted development, CI/CD ownership, automated testing, and collaboration with cross-functional product teams in a mostly remote setup. 🗂️ Requirements: Strong proficiency in React, Strong proficiency in Next.js, Strong proficiency in Node.js, Experience with Server-Side Rendering (SSR), Advanced programming experience with Java, Advanced programming experience with TypeScript, Deep knowledge of Java enterprise development, Experience with Spring Boot, Experience integrating LLMs and AI tools, Experience with REST APIs, Experience with relational databases, Experience with NoSQL databases, Experience with MS Azure, Hands-on experience with Docker, Hands-on experience with Kubernetes, Hands-on experience with Terraform, Experience with GitHub Actions, Experience with Gradle, Experience writing Unit tests, Experience writing Integration tests, Experience writing E2E tests, English proficiency minimum B2, Polish proficiency minimum B2+, Understanding of Agile principles, Knowledge of Scrum or Kanban 📃 Skills: Java, React, Next.js, Node.js, TypeScript, JavaScript, Spring, SpringBoot, REST, SQL, NoSQL, Azure, Docker, Kubernetes, Terraform, GitHub, Actions, Gradle, SSR, LLM, AI, Scrum, Kanban 🏢 Description: For one of our clients, we are looking for a Full Stack Developer (Java,React). Offer • Rate: up to 140 PLN/h net+VAT • Location: remote + visits in Katowice once per quarter • Contract: B2B Requirements • Strong proficiency in React, Next.js, and Node.js , including Server-Side Rendering (SSR) . Vue is a plus. • Advanced, hands-on programming experience with both Java and TypeScript / JavaScript. • Deep knowledge of enterprise software development using Java and Spring Boot technologies. • Experience integrating LLMs and AI tools into daily workflows to optimize development speed. • Mastery of REST APIs and experience with r elational/NoSQL databases , especially within MS Azure . • Hands-on experience with Docker, Kubernetes, Terraform , and pipeline automation via GitHub Actions and Gradle. • Direct experience writing automated Unit, Integration, and E2E tests. • Proficiency in English at a B2 minimum level. • Proficiency in Polish at a B2+ minimum level. • Strong understanding of Agile principles including Scrum or Kanban. Responsibilities • Design advanced planning applications in close collaboration with cross-functional teams. • Develop robust backend APIs for resource scheduling, allocation logic, and core modules. • Create responsive interfaces focused on performance, security, data visualization, and accessibility. • Build your own AI-based work environment using advanced developer tools to maximize efficiency. • Manage the platform lifecycle from architectural strategy to operations and CI/CD practices. • Design and implement automated test scenarios to guarantee platform success. • Maintain active communication with the Technical Product Owner and Product Management organization to align priorities.

🏢 Summary: Senior Full Stack Engineer role focused on application security within a large-scale enterprise platform. The position involves resolving security findings, performing Java and TypeScript dependency upgrades, and ensuring system stability in a regulated financial environment. Requires hands-on secure coding expertise and collaboration with distributed global teams. 🗂️ Requirements: 7+ years enterprise Java experience, Strong background in application security, Experience in vulnerability investigation and remediation, Experience with Java and TypeScript/JavaScript dependency upgrades, Proficiency in Java SE and JEE, Proficiency in Spring Framework, Experience with JMS, Experience with JPA and Hibernate, Proficiency in TypeScript, Experience with Angular v2+, Experience with Observables and Redux, Experience with OAuth, OIDC, SSO integration, Understanding of enterprise design and integration patterns, Experience in financial or regulated environments, Fluent English, Willingness to undergo background check 📃 Skills: Java, JEE, Spring, JMS, JPA, Hibernate, TypeScript, JavaScript, Angular, Redux, OAuth, OIDC, SSO, IAM, Kafka, Camel, Jenkins, Harness 🏢 Description: Start date: April 2026 Salary ranges: 115-125 PLN net/h Form of employment: B2B contract Location: Remote Language: English (fluent) About the Role: We are seeking an experienced Full Stack Engineer with a strong background in application security , enterprise Java development, and modern front‑end frameworks. In this role, you will focus on resolving security findings across a large-scale platform, performing dependency upgrades (Java + TypeScript), ensuring that remediation work does not impact existing functionality, and collaborating with global distributed teams. This is a senior-level position requiring hands-on expertise in secure coding, investigation of vulnerabilities, and implementation of remediation strategies. Key Responsibilities: Analyze and resolve security findings across the platform Perform dependency upgrades (Java, TypeScript/JavaScript) Ensure stability and functional integrity of systems after security fixes Work collaboratively with distributed global engineering teams Integrate with enterprise IAM systems (OAuth, OIDC, SSO) Contribute to best practices, architecture patterns, and secure development standards Must-Have Qualifications: 7+ years of enterprise Java experience Strong security background, including vulnerability investigation & remediation Experience with dependency upgrades (Java, TS/JS) Proficiency in: Java SE / JEE Spring Framework JMS JPA / Hibernate TypeScript Angular v2+, Observables, Redux Enterprise IAM integration: OAuth, OIDC, SSO Solid understanding of enterprise design & integration patterns Experience working in financial/regulated environments Excellent communication skills and fluent English Nice to Have: Apache Camel Jenkins, Harness.io Kafka We offer: Up to 125 PLN/hour net under a B2B contract, A flexible billing model, A short, 14‑day invoice payment term, A comprehensive private medical care package, Access to the MyBenefit cafeteria platform (including Multisport cards and prepaid cards for IKEA, Zalando, Notino, and many other partners). Additional Information: Background checks is mandatory for this role and will be conducted by a trusted third‑party vendor. This requirement is standard for the financial industry, ensuring compliance with regulatory obligations and maintaining the highest security standards. Once a candidate is shortlisted, the client will request the necessary documents and personal details required to complete the verification process.