Senior Software Engineer

🏢 Summary: B2B Senior Full-Stack Software Engineer role focused on building Java-based enterprise applications with strong integration of Agentic AI tools to enhance development workflows. The position involves end-to-end development, CI/CD pipeline design, automated testing, security implementation, and containerized deployments in an Agile environment. The role combines backend, frontend, DevOps, and AI-assisted engineering practices. 🗂️ Requirements: Minimum 5 years of hands-on Java development experience, Strong experience with Spring Boot and Spring Security, Solid knowledge of Hibernate / JPA and ORM concepts, Experience with relational databases (MySQL, PostgreSQL, or Oracle), Proficiency in HTML5, CSS3, JavaScript and one modern frontend framework (React, Angular, or Vue.js), Hands-on experience with JUnit, Mockito, Cucumber and integration testing, Practical experience designing and maintaining Jenkins CI/CD pipelines, Understanding of cryptographic principles and secure key management, Experience with Docker and Kubernetes, Experience designing and implementing RESTful APIs, Understanding of software architecture patterns and design principles, Experience working in Agile/Scrum environments 📃 Skills: Java, Spring, SpringBoot, SpringSecurity, Hibernate, JPA, MySQL, PostgreSQL, Oracle, HTML5, CSS3, JavaScript, React, Angular, Vue, JUnit, Mockito, Cucumber, Jenkins, Docker, Kubernetes, REST, Cryptography, GitHubCopilot, ChatGPT, Claude, Cline 🏢 Description: Senior Software Engineer (Full-Stack, Agentic AI Focus) Warsaw, hybrid 1 day/week B2B contract We are looking for a talented Senior Software Engineer to join our dynamic development team. This role focuses on full-stack development , with a strong emphasis on leveraging Agentic AI tools and technologies to drive efficiency, innovation, and smarter development workflows. The ideal candidate brings solid experience with Java-based enterprise applications , a strong engineering mindset, and a passion for using cutting-edge AI technologies to enhance productivity, code quality, and collaboration across the development lifecycle. Key Responsibilities 1. Development & Engineering Design, develop, and maintain full-stack applications using Java and modern web technologies. Build robust backend services using the Spring Framework (Spring Boot, Spring Security). Develop and optimize database interactions using Hibernate ORM . Create responsive, intuitive, and user-friendly frontend interfaces. Integrate Agentic AI tools and technologies to improve development efficiency and code quality. Participate in the entire software development lifecycle , from requirements analysis to deployment. Implement cryptographic solutions and security protocols to ensure safe handling of sensitive data. 2. CI/CD & DevOps Design, build, and maintain Jenkins CI/CD pipelines for automated build, testing, and deployment. Configure and optimize continuous integration workflows to ensure high code quality and rapid delivery. Implement automated testing integration within CI/CD pipelines. 3. Agentic AI Tools & Technology Integration Leverage AI-powered development tools (GitHub Copilot, ChatGPT, Claude, Cline, etc.) to accelerate coding, troubleshooting, and problem-solving. Utilize AI tools for code review, automated testing, and documentation generation . Stay up to date with emerging Agentic AI technologies and assess their potential to enhance development workflows. Share knowledge and best practices for AI-assisted development across the team. 4. Testing & Quality Assurance Write comprehensive unit tests using JUnit, Mockito, and other testing frameworks. Develop and execute integration tests to ensure system reliability and stability. Implement automated testing strategies and maintain strong test coverage standards . Participate in code reviews and uphold high coding and quality standards. Debug and troubleshoot complex technical issues . 5. Collaboration & Process Work closely with cross-functional teams including product managers, designers, and QA engineers. Actively participate in Agile/Scrum development processes . Contribute to technical documentation and internal knowledge sharing. Continuously improve development processes, tools, and team efficiency . Required Qualifications Technical Skills Java Expertise: Minimum 5 years of hands-on experience in Java development. Spring Framework: Strong experience with Spring Boot and Spring Security . Hibernate / JPA: Solid knowledge of ORM concepts, entity mapping, and database optimization. Database Technologies: Experience with relational databases such as MySQL, PostgreSQL, or Oracle . Frontend Technologies: Proficiency in HTML5, CSS3, JavaScript , and modern frameworks (React, Angular, or Vue.js). Testing Frameworks: Hands-on experience with JUnit, Mockito, Cucumber , and integration testing tools. CI/CD Tools: Practical experience designing and maintaining Jenkins pipelines . Cryptography: Understanding of cryptographic principles including encryption/decryption, digital signatures, and secure key management. Containerization: Experience with Docker and Kubernetes . API Development: Experience designing and implementing RESTful APIs . Architecture Knowledge: Understanding of software architecture patterns and design principles . Agile Methodologies: Experience working within Agile/Scrum environments . Preferred Qualifications Bachelor’s degree in Computer Science, Software Engineering, or a related field. Payment industry experience: 2+ years of experience working within payment systems or financial platforms.

🏢 Summary: Senior Java Software Engineer role focused on architecting and developing scalable SaaS applications for AI-powered data analysis and compliance platforms. The position involves leading technical design, driving best practices, and improving CI/CD and platform quality. The engineer will work across the stack, aligning technical solutions with business needs and ensuring high software quality. 🗂️ Requirements: 5+ years of professional software development experience, 2+ years of experience delivering SaaS products, Proficiency in Java and at least one other language (Python or C#), Strong knowledge of algorithms, data structures, and computational complexity, Experience leading technical design and guiding development teams, Hands-on experience with at least two DevOps platforms: GitHub, Azure DevOps, GitLab, or Jenkins, Experience with CI/CD tooling and developer productivity practices, Ability to design technical solutions from specifications, Experience implementing redundancy and disaster recovery scenarios 📃 Skills: Java, Python, C#, SaaS, Algorithms, DataStructures, GitHub, AzureDevOps, GitLab, Jenkins, CICD, DevOps 🏢 Description: Position: Senior Java Software Engineer Salary: up to 26 000 PLN Form of employment: contract of employment Join our client, which makes software to help users organize data, discover the truth, and act on it. Their SaaS product manages large volumes of data and quickly identifies key issues during litigation and internal investigations. The AI-powered communication surveillance product proactively detects regulatory misconduct like insider trading, collusion, and other non-compliant behavior. They have more than 300,000 users in 49 countries serving thousands of organizations globally. Responsibilities: Architect, design, and develop model-based applications Guide product improvements across schema, framework, and platform Lead the team to best-practice technical design, by example and through collaboration Understand department-wide initiatives and guidelines, work with teams to ensure implementation is aligned with Engineering-wide policies and direction Maintain a backlog of tools or technology enhancements to improve the maintainability and quality of the solutions Encourage teams to work collaboratively by advising and enforcing best practices when needed Stay up-to-date with technologies and best practices related to CI/CD tooling and developer productivity Qualifications: 2+ years of professional experience delivering successful SaaS products. 5+ years of professional experience in software development Strong computer science fundamentals in algorithms, data structures, and computational complexity A self-starter driven to make an impact Strong communication skills, experience leading teams Proficiency in multiple programming languages, e.g, Java, Python, C# Able to learn at multiple levels of the stack – from fine-grained technical implementation to high-level control and data-flow. Comfortable working from Specifications to create a Technical Approach and scoping work Able to consider the Engineering solution in the business context Obsession with software quality and empathy for customer experience In-depth technical understanding and experience with at least two of the following DevOps Platforms: GitHub, Azure DevOps, GitLab, and Jenkins Experience implementing redundancy and disaster recovery scenarios Nice to have: Experience building AI-powered products that use Natural Language Processing or Machine Learning Knowledge of Linux Knowledge of NoSQL database systems such as MongoDB, Redis, and Elasticsearch Fundamental knowledge of Kubernetes and container-based systems Benefits: Comprehensive health, dental, and vision plans Parental leave for primary and secondary caregivers Flexible work arrangements Two, week-long company breaks per year Additional time off Long-term incentive program Training investment program

🏢 Summary: Full-time Senior Software Engineer role focused on designing and delivering scalable features and integrations for a renewable energy platform. The position involves building and maintaining large-scale systems, contributing to greenfield products, and supporting production services in a hybrid Warsaw setup. The goal is to enhance performance and automation in solar project development through robust software solutions. 🗂️ Requirements: 5+ years of software development experience, Proficiency in at least two production programming languages, Strong computer science fundamentals, Experience building and maintaining large-scale systems, Ability to work in remote or hybrid teams, Fluent English (spoken and written) 📃 Skills: Python, Java, Go, C++, JavaScript, TypeScript, Spring, Jackson, JPA, HTTP, SQL, MySQL, MariaDB, Git, Gradle, AWS, DDD 🏢 Description: Senior Software Engineer 💰 Salary: 14,000-28,000 PLN 🌎 Hybrid from Warsaw 🕦 Full-time position, long-term ☑️ Contract through Deel The company develops software that helps businesses plan and manage renewable energy projects more efficiently. Its technology platform uses data and automation to simplify complex workflows, enabling teams to design, evaluate, and deliver energy solutions at scale. The overall goal is to make clean energy projects easier to develop and deploy. Requirements: At least 5+ years of experience in software development Strong proficiency in at least two production programming languages (ideally Python and Java), though any combination of languages is acceptable Good engineering judgment based on solid computer science knowledge Experience working with teams to build and maintain large-scale systems Strong communication and collaboration skills, especially when working in remote or hybrid teams Comfortable adapting to changes in a growing product and evolving technology stack, with the ability to make practical decisions and support the team as things scale Fluent in spoken and written English (please submit your resume in English) Nice to Have: Interest in renewable energy and sustainability Experience applying Domain-Driven Design (DDD) principles Experience developing production software in at least one additional language besides Java (such as Python, Go, C++, JavaScript, or TypeScript) Familiarity with technologies such as Spring Framework, Jackson, JPA, HTTP, SQL (MySQL/MariaDB), Git, Gradle, and AWS Key Responsibilities: Design and deliver new features that improve the performance and accuracy of the platform Build integrations with key partners across the solar ecosystem to simplify end-to-end project workflows Develop new capabilities for our industry-leading solar design platform Lead the creation of new greenfield products that influence how solar systems are designed and implemented Take ownership of the services managed by your team, including participating in an on-call rotation for operational support 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 Software Engineer role focused on designing, building, testing, and deploying cloud-based distributed systems using modern software craftsmanship practices. The position involves end-to-end ownership of microservices-based solutions in a remote-first environment, leveraging cloud platforms and AI-assisted development tools. The offer emphasizes high-quality delivery, clean architecture, and close collaboration with stakeholders. 🗂️ Requirements: 7+ years of commercial experience with Java or Kotlin, Hands-on experience with SQL and NoSQL databases, Understanding of distributed systems, Experience with event-driven architectures, Experience with microservices architecture, Experience with cloud platforms (AWS, GCP or Azure), Experience with automated testing including acceptance and performance tests, Ability to design and deploy cloud-based systems 📃 Skills: Java, Kotlin, SQL, NoSQL, Microservices, AWS, GCP, Azure, TDD, BDD, DDD, AI, Claude, Codex 🏢 Description: We are looking for a Senior 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 formed 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: 7+ years of professional experience with Java or/and Kotlin Hands-on experience with SQL and NoSQL Understanding of distributed systems and event-driven architectures Microservices experience Experience with cloud platforms (AWS / GCP / Azure) Automated testing (including acceptance tests, performance tests) Nice to have: TDD, BDD practitioner Domain Driven Design knowledge AI-assisted software development experience As a part of the team you will : Design, implement, code review, test and deploy a cloud-based systems Develop software from start to finish - you ship it, you run it! Work closely with senior stakeholders on identifying business requirements and shaping the product Deliver quality technical solutions that come from a robust design and clean architecture Build & improve software delivery process using latest tools such as Claude Code or Codex 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 the ability to learn and exchange knowledge Remote first work environment B2B rate 170-200 PLN / hour dependent on your level of expertise Open bounded B2B contract 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: Senior Backend Engineer role focused on designing and delivering secure, scalable authentication services within a distributed platform environment. The position involves working across the full software development lifecycle, contributing to architecture, DevOps practices, and production readiness. The engineer will build and maintain Java-based backend systems while supporting high engineering standards and mentoring team members. 🗂️ Requirements: Strong commercial experience in Java, Proven expertise with Spring and Spring Boot, Experience building scalable, secure backend systems in distributed environments, Hands-on experience with OAuth 2.0 and JWT, Experience designing and integrating APIs, Knowledge of clean code, testing, and code reviews, Experience with CI/CD pipelines and cloud-native development, Understanding of authentication and authorisation concepts, Ability to work in Agile and DevOps environments, Fluent English (written and spoken) 📃 Skills: Java, Spring, SpringBoot, OAuth2, JWT, API, CI/CD, DevOps, Agile, Cloud, Authentication, Authorization 🏢 Description: More about this role Everything you need to know. Overview Senior Software Engineer (Java) (Hybrid/Kraków – 1 day per week in the office) We’re Kingfisher, a team made up of over 74,000 passionate people who bring Kingfisher - and all our other brands: Castorama, B&Q, Screwfix, Brico Dépôt and Koçtaş - to life. That’s right, we’re big, but we have ambitions to become even bigger and even better. We want to become the leading home improvement company and grow the largest community of home improvers in the world. And that’s where you come in. At Kingfisher, our customers come from all walks of life, and so do we. We want to ensure that all colleagues, future colleagues, and applicants to Kingfisher are treated equally regardless of age, gender, marital or civil partnership status, colour, ethnic or national origin, culture, religious belief, philosophical belief, political opinion, disability, gender identity, gender expression or sexual orientation. We are open to flexible and agile working. Therefore, we offer colleagues a blend of working from home and our office, located in Kraków. Talk to us about how we can best support you! At Kingfisher, we value the perspectives that any new team members bring, and we want to hear from you. We encourage you to apply for one of our roles, even if you do not feel you meet 100% of the requirements. In return, we offer an inclusive environment, where what you can achieve is limited only by your imagination! We encourage new ideas, actively support experimentation, and strive to build an environment where everyone can be their best self. We offer a competitive benefit package and plenty of opportunities to stretch and grow your career: 20,000 - 28,000 PLN gross per month on an employment contract Private medical healthcare at LUXMED (including dentalcare) for you and your family Medicover sports card (Fit&More package) Life insurance financed by the employer 30-minute lunch break included in the 8-hour working day Work in a highly professional and stimulating atmosphere Training & Buddy programme that will allow you to quickly adapt to your new role Wellbeing programme for employees Co-financing of monthly tickets for the public transport in Krakow Comfortable working environment in the office and the possibility of home office Language courses, accounting courses, access to LinkedIn Learning and the possibility of co-financing studies and certification Employee referral programme What's the job About the role We are looking for a highly motivated and experienced Senior Backend Engineer to join our Software Engineering team. You will be part of a technology hub, working across the full software development lifecycle and contributing to the foundations of new platforms and capabilities. This role sits within a team responsible for authentication (AUTH) services across the group, playing a critical role in enabling secure, scalable, and reliable access to our products. As a Senior Software Engineer, you will work closely with your cross-functional team to design and implement new features and services, while bringing ideas, energy, and technical leadership to the table. If you're looking for an exciting opportunity to step out of your comfort zone and make a real impact building better software, this is the job for you! Responsibilities Design, build, and maintain secure, scalable backend services, taking solutions from concept through to production. Work closely with product, security, and engineering stakeholders to deliver high-value authentication and platform capabilities. Contribute to system and architecture design, participating in code and quality reviews to maintain high engineering standards. Apply DevOps and Agile practices, including automated testing, continuous integration, and frequent, reliable releases. Ensure services are production-ready through strong observability, monitoring, and operational support. Mentor and support other engineers, helping to build a collaborative and high-performing team. Continuously improve software quality and reliability through data-driven iteration, experimentation, and proactive problem-solving. What you'll bring Strong commercial experience in Java, with proven expertise in building production-grade backend systems using Spring / Spring Boot. Extensive experience designing and developing scalable, secure services in complex, distributed environments. Solid understanding of authentication and authorisation concepts, with hands-on experience using OAuth 2.0 and JWT. Experience working with APIs and integrating backend services within a wider platform ecosystem. Strong knowledge of software engineering best practices, including clean code, testing, and code reviews. Familiarity with DevOps and Agile ways of working, including CI/CD pipelines and cloud-native development. Ability to take technical ownership, collaborate effectively with cross-functional teams, and mentor other engineers. Excellent command of English (written and spoken) Rewards & Benefits What we offer. Private Health Care Private medical healthcare at LUXMED (including dental care) for you and your family. Child Insurance InterRisk - insurance for children. Sports Card Medicover sports card (Fit&More package). Courses Language courses, accounting courses, access to LinkedIn Learning and the possibility of co-financing studies and certification. Life Assurance Life insurance at Generali financed by the employer. Bonus Opportunity to earn annual bonus that aligns to work level of role. Parking Parking spaces and LOTOS card. Kingfisher Pension Scheme Co-financing of monthly tickets. Transport Discount Co-financing of monthly tickets for the public transport in Krakow (50% discount).

🏢 Summary: Senior Software Engineer role focused on developing and maintaining secure encryption infrastructure across Windows, Linux, and cloud environments. The position involves backend and driver development, Windows application enhancement, CI/CD automation, and server management to support critical production systems. The role combines embedded systems, hardware-software integration, and cloud-based infrastructure in a hybrid Warsaw-based setup. 🗂️ Requirements: Engineering Degree in Electronics or Computer Science, Minimum 5 years of experience in IT, automation, software engineering, or electronics, Strong proficiency in IP networking, Strong knowledge of computer systems, Experience with database management, Proven troubleshooting skills in Python and C++, Experience working in Windows and Linux environments, Fluency in English, Fluency in Polish, Legal right to work in the European Union 📃 Skills: Python, C++, JavaScript, Node.js, Express, Windows, Linux, AWS, Azure, CI/CD, IP, VPN, PKI, SQL, Batch 🏢 Description: Ignite Innovation in Embedded Systems — Redefine the Future of Connectivity and Security! Warsaw-based opportunity with hybrid work model. As a Senior Software Engineer , you will be working for our client, a leading company in the manufacturing industry, focused on the development and deployment of critical encryption infrastructure. You will play a vital role in maintaining and advancing secure server and device solutions across Windows, Linux, and cloud environments. Join us to push the boundaries of hardware-software integration, ensuring robust security and operational excellence in high-stakes production lines. This is your chance to be part of pioneering technological progress. Your main responsibilities: Develop backend solutions in Python and hardware device drivers to support encryption systems. Create new Windows applications based on existing modules, extending functionality and performance. Enhance frontend components mainly supporting existing JavaScript modules in Node.js/Express. Automate CI/CD workflows, develop tests, and streamline deployment processes. Support and improve Windows batch scripts, deploy Windows services, and troubleshoot related applications. Diagnose and resolve issues within Python, JavaScript, and C++ codebases. Identify system risks, propose mitigation strategies, and implement solutions to prevent future problems. Collaborate directly with product development teams on evolving existing solutions and developing new products. Manage Windows and Linux servers on-premises and in the cloud, overseeing network configurations and VPN connectivity. Navigate and maintain cloud-based systems, primarily AWS and Azure. Conduct upgrades and deployment of encryption infrastructure on new production lines. Occasionally travel domestically and internationally (up to 5%). You're ideal for this role if you have: An Engineering Degree in Electronics or Computer Science. At least 5 years of hands-on experience in IT, automation, software engineering, or electronics. Strong proficiency in IP Networking, computer systems, and database management. Proven troubleshooting skills in Python and C++, with experience in Windows and Linux environments. Ability to proactively identify risks and craft effective solutions. Excellent communication and collaboration skills for working with international teams. Fluency in English, both spoken and written, for technical documentation and team interactions. It is a strong plus if you have: (optional) Experience working with Azure or AWS cloud platforms. Background in PKI system development. Language Required for the role: Fluent in English and Polish. Eligibility for the role: Only candidates with an existing legal right to work in the European Union 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.

🏢 Summary: Senior Java Software Security Engineer role focused on building and securing cloud-native solutions within a large-scale Software Security platform. The position involves hands-on development, secure architecture design, and integration of modern security protocols in production cloud environments. You will drive engineering excellence across Java-based, event-driven systems deployed on GCP. 🗂️ Requirements: 7+ years of experience in Java development and software security, Expert knowledge of Java 21+ and JVM internals, Strong experience with Spring Boot, Hands-on experience with GCP cloud services, Experience designing cloud-native architectures, Experience with GKE and containerized deployments, Experience with Cloud Spanner and Postgres, Experience with event-driven systems (Kafka or Pub/Sub), Experience implementing OAuth2 and OpenID Connect, Knowledge of Zero Trust Architecture, Ability to identify and mitigate software security risks 📃 Skills: Java, Spring, JVM, GCP, GKE, Kubernetes, Spanner, Postgres, Kafka, PubSub, OAuth2, OpenID, ZeroTrust, Loom, Cloud, Microservices 🏢 Description: Unleash the Future of Software Security — Drive Innovation and Excellence at Scale! Krakow-based opportunity with hybrid work model (3 remote days per week). As a Senior Java Software Security Engineer – Cloud & Open Source , you will be working for our client, a global leader in innovative security solutions within the financial industry. You will play a pivotal role in adopting engineering excellence across their Software Security platform, directly contributing to cutting-edge cloud-native solutions, open-source initiatives, and high-impact program deliveries. This is a unique chance to shape the security landscape while advancing your career in a dynamic, high-tech environment. Your main responsibilities: Take ownership of code delivery, contributing hands-on to complex security solutions in production environments Develop and contribute to open source projects, blogs, or GitHub repositories showcasing expertise Leverage deep knowledge of Java 21+ (including Virtual Threads/Project Loom), Spring Boot 3.x, and modern JVM internals Design and implement scalable cloud-native architectures using GKE, Cloud Spanner, Postgres, and event-driven systems like Kafka or pub/sub Integrate Zero Trust Architecture and OAuth2/OpenID Connect at the code level to enhance security protocols Translate business requirements into robust technical solutions, driving automation from the outset Lead and influence teams by sharing knowledge, mentoring peers, and raising the bar on quality and efficiency Stay abreast of industry shifts, emerging trends, and innovative practices, guiding teams toward forward-thinking implementation Identify and mitigate software security risks, promoting best practices and continuous improvement You're ideal for this role if you have: 7 or more years of experience in Java development, software security, or related fields Proven expertise with JVM internals, memory management, and the Spring Boot ecosystem Hands-on experience working with GCP (Google Cloud Platform) cloud services Strong understanding of cloud-native architectures, open source tools, and modern security protocols Ability to create impactful solutions that make banking better, faster, and safer Leadership skills to influence teams and foster a culture of continuous learning and high standards Experience identifying security risks and adopting innovative tech or processes to address them A holistic, generalist mindset capable of applying thinking across multiple domains It is a strong plus if you have: Contributions to open source projects or technical blogs Certifications related to cloud platforms or security Language required for the role: Fluent English, with excellent communication skills Eligibility to work in Europe: Only candidates with an existing legal right to work in the European Union 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.

🏢 Summary: Senior Java Software Security Engineer role focused on building and securing cloud-native, open-source-driven solutions within a large-scale security platform. The position involves hands-on development, secure architecture design, and implementation of modern JVM and cloud technologies in production environments. The role combines deep Java expertise with cloud security and event-driven system design. 🗂️ Requirements: 7+ years of experience in Java development or software security, Expert knowledge of Java 21+ and JVM internals, Strong experience with Spring Boot, Hands-on experience with GCP services, Experience designing cloud-native architectures, Experience with event-driven systems, Knowledge of OAuth2 and OpenID Connect, Experience integrating Zero Trust Architecture, Experience identifying and mitigating software security risks, Fluent English, Legal right to work in the EU 📃 Skills: Java, JVM, SpringBoot, GCP, GKE, CloudSpanner, Postgres, Kafka, PubSub, OAuth2, OpenIDConnect, ZeroTrust, ProjectLoom, MemoryManagement, Cloud, GitHub 🏢 Description: Unleash the Future of Software Security — Drive Innovation and Excellence at Scale! Krakow-based opportunity with hybrid work model (3 remote days per week). As a Senior Java Software Security Engineer – Cloud & Open Source , you will be working for our client, a global leader in innovative security solutions within the financial industry. You will play a pivotal role in adopting engineering excellence across their Software Security platform, directly contributing to cutting-edge cloud-native solutions, open-source initiatives, and high-impact program deliveries. This is a unique chance to shape the security landscape while advancing your career in a dynamic, high-tech environment. Your main responsibilities: Take ownership of code delivery, contributing hands-on to complex security solutions in production environments Develop and contribute to open source projects, blogs, or GitHub repositories showcasing expertise Leverage deep knowledge of Java 21+ (including Virtual Threads/Project Loom), Spring Boot 3.x, and modern JVM internals Design and implement scalable cloud-native architectures using GKE, Cloud Spanner, Postgres, and event-driven systems like Kafka or pub/sub Integrate Zero Trust Architecture and OAuth2/OpenID Connect at the code level to enhance security protocols Translate business requirements into robust technical solutions, driving automation from the outset Lead and influence teams by sharing knowledge, mentoring peers, and raising the bar on quality and efficiency Stay abreast of industry shifts, emerging trends, and innovative practices, guiding teams toward forward-thinking implementation Identify and mitigate software security risks, promoting best practices and continuous improvement You're ideal for this role if you have: 7 or more years of experience in Java development, software security, or related fields Proven expertise with JVM internals, memory management, and the Spring Boot ecosystem Hands-on experience working with GCP (Google Cloud Platform) cloud services Strong understanding of cloud-native architectures, open source tools, and modern security protocols Ability to create impactful solutions that make banking better, faster, and safer Leadership skills to influence teams and foster a culture of continuous learning and high standards Experience identifying security risks and adopting innovative tech or processes to address them A holistic, generalist mindset capable of applying thinking across multiple domains It is a strong plus if you have: Contributions to open source projects or technical blogs Certifications related to cloud platforms or security Language required for the role: Fluent English, with excellent communication skills Eligibility to work in Europe: Only candidates with an existing legal right to work in the European Union 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.

🏢 Summary: Full-time Senior Software Engineer role focused on backend development and system integrations for a large-scale job platform. The position involves API integrations, client and partner migrations, and backend services supporting UI applications, with overlap until 19:00–20:00 CET. The role emphasizes independent work on platform transitions and distributed systems. 🗂️ Requirements: Strong Java backend development experience, Experience building and integrating APIs, Experience with Kafka or other messaging/event streaming systems, Experience with MySQL or other relational databases, Experience with NoSQL databases (e.g., DynamoDB), Experience with system integrations or platform migrations, Ability to develop backend services supporting UI applications, Ability to work independently and proactively 📃 Skills: Java, Kafka, MySQL, DynamoDB, SQL, NoSQL, APIs, AWS 🏢 Description: Svitla Systems Inc. is looking for a Senior Software Engineer for a full-time position (40 hours per week) in Europe. Our client is one of the world’s largest and fastest-growing job sites. Overlap till 19:00 - 20:00 CET. Requirements Strong Java backend development experience. Experience building and integrating APIs. Experience with Kafka or other messaging/event streaming systems. Experience with MySQL or other relational databases. Experience working with NoSQL databases (e.g., DynamoDB). Experience working on system integrations or platform migrations. Ability to work on backend services that support UI applications. Work independently, take proactive steps, not just execute on steps. Nice to have Experience with AWS (especially DynamoDB or cloud-native services). Some AI tools experience - Optional, not required. Responsibilities Client and partner migrations, codebase transitions, and integrating systems through API calls. Perform client-side migrations, including: Updating API calls (old → new system), working across multiple client codebases, supporting pipeline / ramp issues. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Long-term Senior Software Engineer role building a cloud-based financial data platform from scratch. The position focuses on designing and developing scalable, real-time data processing solutions in Azure with strong influence on architecture and engineering standards. You will create backend services and data pipelines in a modern, evolving data environment. 🗂️ Requirements: Strong programming skills in Python or Java or C#, Experience with cloud platforms (Azure preferred), Experience building backend services or data processing components, Experience working with data pipelines and ensuring data consistency, Understanding of software design and clean code principles, Experience with CI/CD pipelines, Experience with version control systems 📃 Skills: Python, Java, C#, Azure, Cloud, CI/CD, Backend, Datapipelines 🏢 Description: As a Senior Software Engineer, you’ll be working on data-driven solutions within the financial data and analytics space. This is a long-term collaboration on a project being built from scratch, giving you real influence over architecture, technology choices, and engineering standards from day one. You’ll be shaping platforms that process large-scale, real-time data used across global financial systems, in a modern and evolving data environment. Key responsibilities Design and develop scalable solutions in cloud environment (Azure) Build and maintain data processing components and services Work with data pipelines and ensure data consistency across systems Develop cloud-based applications and services Collaborate with Engineering, Architecture and Product teams Contribute to clean code, CI/CD, automation and system reliability Take part in code reviews and technical discussions Ideal candidate profile Strong programming skills in Python or Java or C# Experience working with cloud platforms (Azure preferred) Experience in building backend services or data processing components Understanding of software design, clean code and good engineering practices Experience with CI/CD pipelines and version control systems Ability to work independently and as part of a team Good communication skills Nice to have Experience with Spark / PySpark / Databricks Experience with data platforms or data engineering concepts Familiarity with event-driven architectures (Kafka, Event Hubs or similar) Experience with Azure data ecosystem (e.g. Fabric) Experience with containers / Kubernetes (AKS) Conditions Form of cooperation: UoP + KUP 50% Salary range: 18 000 - 30 000 PLN gross/month + yearly bonus depends on the results Hybrid work model: 3 days per week in the Gdynia office Benefits: private medical care, Multisport card, employee pension scheme Recruitment steps Call with a KUBO recruiter (approx. 30 min.) Interview with the client (max. 2 rounds) Decision and feedback