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Senior Software Engineer - Java/Kotlin Jobs

3415 Job Offers

Senior Software Engineer - Firefox Enterprise
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Join Mozilla's Firefox Enterprise team as a Senior Software Engineer. Develop and ship key OS integrations for large-scale deployments using C++, Rust, and JavaScript. Collaborate with a global team to enhance security, administration, and the user experience for millions.
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Mozilla
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Senior Software Engineer
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Join Mozilla's Localization Team as a Senior Software Engineer. Develop key Python/JavaScript tools like Pontoon and contribute to i18n/l10n standards for Firefox. Enjoy a remote role with excellent benefits, including bonuses, comprehensive healthcare, and wellness stipends. Collaborate with a g...
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65000.00 - 87000.00 EUR / Year
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Mozilla
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Mid / Senior Software Engineer
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Join AppNation, a top-charting mobile app developer, as a Mid/Senior Software Engineer. You will own backend development using Node.js, React, and GCP for AI-powered applications impacting millions. We seek 5+ years of experience with SQL, Redis, and modern TypeScript frameworks. Enjoy remote day...
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AppNation
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Senior Software Engineer
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Seeking a Senior Software Engineer in Annapolis Junction. This role requires 14+ years of experience, expertise in C/C++, and Linux development for embedded systems. You will design, test, and enhance critical software, collaborating with cross-functional teams. Write clean, high-performance code...
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United States , Annapolis Junction
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Wrench Technology
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Senior Front-End Software Engineer
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Join a top-tier engineering team in India as a Senior Front-End Engineer. Develop a new mobile product using React, TypeScript, and Node.js. Enjoy flexible hours, generous 401K match, and a wellness budget while building exceptional user experiences.
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India
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YipitData
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Senior Software Engineer - Frontend
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Join Zalando's Size and Fit team in Berlin as a Senior Frontend Engineer. Develop modern SaaS applications using React, TypeScript, and React Native to solve key customer problems. You will architect solutions, write tests, and collaborate cross-functionally. Enjoy a hybrid model, relocation supp...
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Germany , Berlin
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Zalando
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Senior Software Engineer
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Join YipitData as a Senior Software Engineer in a fully-remote role based in India. You'll enhance large-scale distributed systems or data pipelines using Go/Python. Collaborate with global teams and leverage cloud infrastructure expertise. We offer benefits including learning reimbursement and f...
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India
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YipitData
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Senior Software Engineer
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Join Taboola's Advertiser Solutions Core team in Tel Aviv as a Senior Software Engineer. Be a technical leader, architecting large-scale distributed systems that process over 140TB of daily data. Drive key decisions, mentor engineers, and work with Java and Big Data tools in a hybrid model. Enjoy...
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Israel , Tel Aviv
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Taboola
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Senior Principal Software Engineer
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Lead Zalando's strategic React Native migration as a Senior Principal Engineer. Tackle complex architectural challenges in the Client Foundations team, focusing on performance, scalability, and best-in-class UI for 50M+ users. This pivotal role requires deep expertise in React Native's new archit...
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Helsinki, Zurich, Dublin, Berlin
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Zalando
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Senior Software Engineer, Infrastructure
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Join a leading ad-tech company as a Senior Software Engineer in Tel Aviv. Develop massive-scale infrastructure supporting 1.4B+ users and 500k+ RPS using Java and distributed systems. Enjoy a hybrid model, comprehensive benefits, and a fully stocked kitchen. Collaborate with top engineers on glob...
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Israel , Tel Aviv
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Taboola
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Senior Software Engineer
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Seeking a Senior Software Engineer in Chennai to design flexible APIs and common components for Zuora's subscription platform. This full-stack role requires 8+ years' experience with modern stacks like Node/Java/Go and cloud platforms. We offer competitive compensation, generous paid leave, and a...
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India , Chennai
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Zuora
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Senior Software Engineer
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Join Microsoft's Azure Specialized team as a Senior Software Engineer. Design and deliver next-gen AI, gaming, and cloud infrastructure using C++, C#, or Python. This role requires a Bachelor's degree and 4+ years of experience, offering the chance to work on cutting-edge hardware and scalable sy...
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United States , Multiple Locations
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer
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Join the Azure IoT Hub team in Redmond to build mission-critical, scalable cloud services. As a Senior Software Engineer, you'll develop core IoT platform features using C, C++, or C#. This role requires 4+ years of experience with distributed cloud systems and offers a key position in a leading-...
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United States , Redmond
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer
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Join Microsoft's Azure Resource Graph team as a Senior Software Engineer. Design and scale the planet-scale inventory backbone powering core Azure experiences. Build high-throughput cloud services using C++, C#, or Java in a distributed systems environment. This role offers a chance to impact glo...
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United States , Multiple Locations
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer - Front-End
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Join our team as a Senior Front-End Engineer. You will translate designs into high-quality, responsive code using HTML, SCSS, and Angular. Collaborate with designers to build accessible, user-centric interfaces and optimize for performance. A strong UX focus and 3+ years of experience are key.
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99x
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Senior Software Engineer
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Shape the future of AI evaluation at Microsoft. As a Senior Software Engineer in Redmond, you'll build scalable tools that define quality for M365's AI, impacting millions. Leverage your 4+ years in C++, C#, Python, or Java to create reusable components and drive platform innovation. Join a team ...
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United States , Redmond
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Full-Stack Software Engineer - Product Platform
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Join Make as a Senior Full-Stack Engineer in Prague. Develop core platform services using TypeScript, Docker, and microservices. Enjoy RSUs, bonus, generous vacation, and a strong L&D package in a leading no-code automation company.
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Czech Republic , Praha
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Sport Vision Czechia s.r.o.
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Senior Software Engineer
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Join Mastercard in Pune as a Senior Software Engineer in Quality. You will design and develop test automation for digital payments using Java, Selenium, and API testing. This role requires 6-9 years of experience in Agile environments and CI/CD pipelines like Jenkins. Be part of a global team dri...
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India , Pune
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Mastercard
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Senior Software Engineer - API Platform
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Join Mastercard in Portugal as a Senior Software Engineer for the API Platform. Design and develop next-generation digital products using Java/Kotlin in an Agile, global team. You will build and evolve the gateway for payment, data, and security APIs, ensuring a seamless developer experience. Str...
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Portugal
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Mastercard
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Senior Software Engineer - Java
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Join Mastercard's Open Banking team in Gdansk as a Senior Java Engineer. Develop and maintain secure, high-quality APIs for seamless European bank connectivity. Utilize your deep Java expertise, AWS, and modern CI/CD practices to build innovative, low-touch solutions. Work on critical systems inv...
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Poland , Gdansk
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Mastercard
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About the Senior Software Engineer - Java/Kotlin role

Explore senior software engineer jobs specializing in Java and Kotlin, a high-demand career path for experienced developers who architect and build robust, scalable software systems. Professionals in this role are pivotal in transforming complex business requirements into efficient, reliable, and maintainable applications. Typically, they engage in the full software development lifecycle, from conceptual design and technical specification to implementation, testing, deployment, and ongoing optimization. A core responsibility involves making critical architectural decisions, often designing and implementing microservices, APIs, and cloud-native solutions that form the backbone of modern digital products.

Senior software engineers in the Java/Kotlin ecosystem commonly shoulder a wide array of duties. They design and develop high-performance backend services, distributed systems, and data processing pipelines. Ensuring code quality is paramount; they rigorously write unit and integration tests, conduct thorough code reviews, and advocate for best practices in clean code and design patterns like MVC. Collaboration is a key aspect, as they frequently work alongside cross-functional teams including product managers, UX/UI designers, DevOps specialists, and other engineers to deliver cohesive user experiences. Furthermore, they often provide technical leadership, mentoring junior developers, driving technical discussions, and contributing to strategic planning and knowledge-sharing initiatives.

The typical skill set for these jobs is extensive. Mastery of Java and/or Kotlin is fundamental, complemented by deep knowledge of JVM internals, concurrency, and memory management. Proficiency with popular frameworks such as Spring Boot, Micronaut, or Quarkus is highly valued. These roles require strong experience with both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, Cassandra) databases, as well as expertise in designing RESTful and often GraphQL APIs. Familiarity with cloud platforms (AWS, Azure, GCP), containerization (Docker, Kubernetes), and CI/CD pipelines is standard for deploying and managing applications. A strong understanding of software architecture principles, including event-driven and serverless designs, is essential.

Candidates seeking senior software engineer jobs are generally expected to possess a bachelor's degree in computer science or a related field, along with 5+ years of professional development experience. Beyond technical acumen, success in this senior role demands excellent problem-solving abilities to debug complex issues, a proactive approach to learning emerging technologies, and strong communication skills to articulate technical concepts to both technical and non-technical stakeholders. This career offers the opportunity to work on challenging problems, influence technology stacks, and build systems that serve millions of users, making it a cornerstone role in the technology industry.