Mid Level Java Engineer jobs in Warsaw – Page 2 | RoboApply Jobs

Mid Level Java Engineer jobs in Warsaw· Page 2

Results 21–40 of 573 for “Mid Level Java Engineer” in Warsaw.

573 jobs found

21 - 40 of 573 Jobs
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Nordsec logo
Full-time|On-site|Warsaw

Join our dynamic team at Nordsec as a Mid-Senior iOS Engineer in the vibrant city of Warsaw! We are looking for a talented and passionate individual to contribute to the development of innovative iOS applications. You will play a crucial role in enhancing user experiences by implementing the latest technologies and best practices in mobile development.

Mar 23, 2026
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1GLOBAL logo
Full-time|On-site|Warsaw, Masovian Voivodeship, Poland

About Us1GLOBAL is an innovative technology leader in mobile communications, offering unparalleled global connectivity solutions for both enterprises and consumers. Our cutting-edge telecom platform features a robust, owned global mobile core network, state-of-the-art in-house developed eSIM technology, and a wide array of telecom licenses, allowing us to operate as a fully regulated telecommunications provider in 40 countries around the globe.We proudly serve some of the world’s most prominent banks, enterprises, and digital-first businesses, including neo-banks, global FMCG leaders, travel industry giants, and payment service providers. Currently, we empower over 70 million people and devices worldwide, facilitating our clients to launch, scale, and innovate confidently within the mobile ecosystem.1GLOBAL is a rapidly growing, profitable entity, projecting full-year revenues exceeding US$200 million and profits over US$25 million by 2025. Our robust cash flow supports continuous investments in infrastructure, platform innovation, and global expansion. Recent years have been pivotal for us, marked by significant enterprise and consumer client acquisitions that enhance our status as a formidable global mobile connectivity provider, dedicated to helping consumer brands thrive in telecommunications.Founded in 2022 by seasoned technology entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL is at the forefront of shaping the future of global telecommunications. We operate as a fully regulated Mobile Virtual Network Operator (MVNO) in 12 countries and as a regulated telecom operator in an additional 28 markets. Headquartered in the Netherlands, with premier R&D centers in Lisbon, Berlin, and São Paulo, our team of nearly 500 experts across 15 countries is unified by a singular mission: to redefine global mobile connectivity through unparalleled technology, scale, and operational excellence.About the TeamThis senior, hands-on Java position focuses on scalable backend systems, long-term ownership, and addressing real-world production challenges. You will be part of a newly formed backend team in Warsaw, dedicated to advancing our eSIM, global connectivity platform, and IoT solutions.The role entails:Enhancing and modernizing existing systems,Developing new services and greenfield components,Boosting reliability, performance, and maintainability across the platform.As a senior engineer, you will also lead the evolution of testing methodologies as systems evolve.

Feb 25, 2026
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Capital logo
Full-time|Hybrid|Warsaw, Mazowieckie, Poland

Join us at capital, a premier trading platform expanding globally. Our award-winning products, recognized for their advanced technology and exceptional client experience, set the standard in the industry. We are on the lookout for top-tier talent to join our dynamic engineering team.We are currently enhancing our Backend Team and seeking passionate Java Software Engineers with a keen interest in trading! Our engineering team is crucial in maintaining the performance, security, and reliability of our products. With a focus on delivering superior performance, ensuring compliance, and protecting client data, your contributions will significantly enhance the trading experience for our clients.We value engineers who not only write exceptional code but also embody our core values. We are searching for individuals who are ready to move quickly, willing to innovate and develop, who understand the importance of listening, respecting, and supporting, strive to exceed client expectations, and take full ownership for achieving real impact.

Jun 13, 2025
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altersolutions logo
Full-time|On-site|Warsaw

Join our dynamic team as an Angular Developer, where you will be instrumental in developing and modifying code for the front-end of a brokerage platform. Collaborate closely with full-stack and back-end developers to create comprehensive solutions using Java and Angular.Contribute to system architecture changes.Implement new features using Angular.Refactor existing code to enhance performance.Develop integrations with RESTful services.Optimize application performance and implement security solutions.Assist with technical design and documentation.

Nov 5, 2025
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Nordsec logo
Full-time|On-site|Warsaw

Join NordLayer, where we are revolutionizing cybersecurity for modern businesses.Our dynamic platform is designed to empower teams while alleviating security concerns. Trusted by over 11,000 global organizations, NordLayer seamlessly integrates with any technology stack, ensuring user protection across borders.Your role: As a DevOps Engineer, you will play a pivotal part in securing the infrastructure and enhancing CI/CD processes within our organization. Work closely with seasoned engineers and cross-functional teams to adopt DevOps best practices, support scalable cloud solutions, and optimize software delivery. This role offers a fantastic opportunity to advance your career in a vibrant environment dedicated to infrastructure automation and innovation.

Jan 26, 2026
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Moss logo
Full-time|On-site|Warsaw

Join Moss, where we empower finance professionals to automate their daily tasks and make strategic decisions.Our unique culture is driven by impact and growth, with every team member dedicated to learning and excelling. Recognized by Sifted’s Rising 100 and LinkedIn's Top Startups, we are committed to propelling your career and achieving lasting success together.We are looking for talented **Mid-Level Backend Engineers (f/m/d)** to join various teams in our Warsaw office, including:Sales EnablementPricing & BillingAcquisitionSpend ManagementActivation & Card SpendIn this role, you will collaborate closely with designers, product managers, and frontend engineers to bring innovative ideas to life. Your goal will be to ensure that our product simplifies and automates everyday tasks through intuitive and efficient tools.

Apr 29, 2025
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altersolutions logo
Full-time|On-site|Warsaw

Join altersolutions as a Mid/Senior Angular Developer in Warsaw, where you will have the opportunity to work on innovative projects and enhance your skills in a collaborative environment. You will be responsible for developing dynamic web applications using Angular, collaborating with cross-functional teams to design and implement user-friendly interfaces.

Apr 30, 2025
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Nordsec logo
Full-time|On-site|Warsaw

Join our team as a Backend Engineer and contribute to our innovative solutions at NordProtect. We are looking for talented individuals with a passion for technology and a strong background in backend development, specifically using Go. In this role, you will collaborate with cross-functional teams to design, implement, and maintain robust and scalable backend systems.

Apr 13, 2026
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Veeam Software logo
Full-time|On-site|Warsaw, Poland

Join Veeam Software as a Junior/Middle QA Engineer and be part of a dynamic team dedicated to ensuring the highest quality of our innovative software solutions. In this role, you will collaborate with developers and product teams to identify and resolve issues, contributing to the continuous improvement of our products.

Apr 2, 2026
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Tietoevry logo
Full-time|On-site|Warsaw

Join Tietoevry as a Test Automation Engineer specializing in Java and Payments/Swift. In this full-time role, you will be at the forefront of technology, enhancing payment systems through automated testing solutions. Collaborate with a dynamic team to deliver high-quality software that meets our clients' needs.

Jan 19, 2026
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Nord Security logo
Full-time|On-site|Warsaw

Join the NordPass Team to Revolutionize Password Security!At NordPass, we strive to make online password management effortless and secure. With over 7 million users and 10,000+ companies relying on us, we are committed to providing a premium password manager that safeguards credentials, cards, and sensitive information.Your Contribution: Play a pivotal role in enhancing digital security for millions by developing innovative and secure login solutions.Key ResponsibilitiesCollaborate with cross-functional teams to integrate and optimize microservices across NordSecurity's product ecosystem, ensuring a seamless user experience.Prioritize the delivery of high-quality, scalable, and secure code.Engage in key technical and architectural decisions, refining development processes and shaping the strategic direction of our products.Demonstrate strong ownership over product development, maintenance, and quality assurance.Facilitate effective communication and collaboration among engineering, product, and design teams.Essential QualificationsExtensive experience with PHP (3+ years).Hands-on experience with AI tools to enhance engineering (e.g., code generation, test creation, performance optimization, and debugging), demonstrating accountability for outcomes.Proficient in system design, with a clear understanding of design patterns and their applications.Solid grasp of Object-Oriented Programming (OOP), asynchronous programming, and design patterns.A genuine passion for architecture and technology; we want to hear from those who can create scalable and robust code.Familiarity with core CI/CD principles, unit testing, and integration testing.Preferred QualificationsKnowledge of cryptography.

Apr 12, 2026
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Nordsec logo
Full-time|On-site|Warsaw

Join our dynamic team at Nordsec as a Mid-Level Backend Engineer, specializing in developing robust security tools. In this role, you will design, implement, and maintain backend services that safeguard our digital assets and enhance user experiences.Your responsibilities will include collaborating with cross-functional teams, ensuring optimal system performance, and contributing to the architecture of our security infrastructure. We are looking for innovative thinkers who are passionate about coding and eager to tackle challenging problems.

Apr 2, 2026
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NordPass logo
Full-time|On-site|Warsaw

Join NordPass and revolutionize password security.At NordPass, we are committed to making logins safer and more straightforward for everyone. As a member of our dedicated team, you will contribute to developing a password manager that is trusted by over 7 million users and more than 10,000 organizations worldwide to protect their credentials, payment information, and sensitive data.Your Role: Play a vital role in helping millions secure their digital identities by designing smarter, safer login solutions.

Mar 19, 2026
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netcompany1 logo
Full-time|On-site|Warsaw

Join our dynamic team as a Java Developer (f/m) and play a pivotal role in designing and developing innovative software solutions. You will work closely with cross-functional teams to deliver high-quality applications that meet the needs of our clients.In this position, you will leverage your expertise in Java programming, development frameworks, and best practices to create robust applications. Your contributions will directly impact the success of our projects and the satisfaction of our clients.

Mar 24, 2026
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netcompany1 logo
Full-time|On-site|Warsaw

Join our dynamic team as a Junior Java Developer and embark on an exciting journey with netcompany1, where innovation meets technology! In this role, you will have the opportunity to work on cutting-edge projects, collaborate with experienced developers, and enhance your coding skills in a supportive environment.

Mar 24, 2026
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altersolutions logo
Full-time|On-site|Warsaw

We are seeking a highly skilled Senior Java Developer to join our talented team at altersolutions. In this role, you will be instrumental in designing, developing, and deploying robust Java applications that meet our clients' needs. Your expertise will help drive innovation and efficiency within our projects.The ideal candidate will possess a deep understanding of Java technologies, frameworks, and best practices. You will collaborate with cross-functional teams to deliver high-quality software solutions on time and within budget.

Jun 5, 2025
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Nord Security logo
Full-time|On-site|Warsaw

Role Overview Nord Security is looking for a Low-Level Engineer to join the NordVPN team in Warsaw. This role focuses on developing and improving VPN technology that protects users' privacy and security around the globe. What You Will Do Collaborate with a skilled team to design, build, and refine VPN solutions Work on projects that strengthen digital security for millions of users Contribute to features and enhancements that improve online privacy Location This position is based in Warsaw.

Apr 15, 2026
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NordSec logo
Full-time|On-site|Warsaw

Role overview NordVPN is looking for a Low-Level Engineer in Warsaw to help build and maintain core technologies. This role focuses on improving software solutions and supporting the security and performance of NordVPN products. What you will do Work closely with other engineers to develop and maintain foundational software components Contribute to the security and efficiency of NordVPN’s products Help enhance existing solutions and support ongoing product improvements

Apr 15, 2026
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Nordsec logo
Full-time|On-site|Warsaw

Join NordLayer and be a part of our mission to revolutionize cybersecurity for businesses.Our innovative platform is designed to empower modern teams, allowing them to operate without the typical security concerns. With over 11,000 companies worldwide relying on NordLayer, we seamlessly integrate with any tech stack to ensure user protection across borders.Your role? Contributing to the development of next-generation network security solutions that help businesses remain secure and progressive.

Feb 25, 2026
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Nord Security logo
Full-time|PLN 14.5K/yr - PLN 20.7K/yr|On-site|Warsaw

Join Our Innovative Team at NordLayer!At NordLayer, we are revolutionizing cybersecurity, ensuring that businesses can scale securely. Our toggle-ready platform empowers modern teams to operate efficiently without the burden of security concerns. Trusted by over 11,000 companies across the globe, NordLayer seamlessly integrates with any tech stack to provide comprehensive user protection worldwide.Your Role: Play a vital role in safeguarding businesses and advancing network security solutions for the future.Key Responsibilities:Design, develop, and maintain automated end-to-end testing frameworks for both API and UI.Collaborate with the Test Automation team to enhance a shared testing library.Identify, document, and work with the engineering team to troubleshoot software defects.Partner closely with product, engineering, and QA teams to ensure top-notch product quality.

Apr 12, 2026

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