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Senior Software Engineer Poland, Warsaw Jobs

18 Job Offers

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Senior Software Engineer (JVM/Kotlin)
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Senior Software Engineer (JVM/Kotlin) sought by hyperexponential, a Series B AI platform scaling globally. You will architect scalable backend systems for complex data processing and workflow orchestration, transforming unstructured data into structured outputs. Based in Warsaw, Poland, this role...
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Poland , Warsaw
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Not provided
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hyperexponential
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Senior Angular Software Engineer - Prime Finance Risk & Business Intelligence
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Senior Angular Software Engineer sought for Prime Finance Risk & Business Intelligence in Warsaw. You will design and own critical, distributed backend systems using modern Angular, SQL, and OpenShift. Lead technical initiatives, mentor engineers, and drive CI/CD pipelines in a global fintech tea...
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Poland , Warsaw
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268390.00 - 457010.00 PLN / Year
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Citi
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Senior Angular Software Engineer
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Poland , Warsaw
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268390.00 - 457010.00 PLN / Year
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Citi
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Senior Embedded Software Engineer
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Senior Embedded Software Engineer sought in Warsaw to design, implement, and validate high-quality embedded software for industrial printers. Requires 7+ years of experience, advanced C++, Linux, and Agile/Scrum skills. Join a collaborative team driving innovation in print technology with opportu...
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Poland , Warsaw
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Dover Precision Components
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Senior Software Engineer - Test Automation/Java
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Senior Software Engineer – Test Automation (Java) role in Warsaw, Poland. Join Mastercard's Developer Experience team to build and maintain high-quality automated tests and frameworks. Requires 5+ years of experience, strong Java skills, and expertise in API, UI, and distributed systems testing. ...
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Poland , Warsaw
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Mastercard
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Senior Software Engineer - Java
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Join our Warsaw team as a Senior Java Engineer. Design and build scalable, API-driven backend services using Spring Boot. You will own complex, CRUD-based systems end-to-end in a production environment. We seek 5-7 years of Java expertise with Docker/Kubernetes exposure.
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Poland , Warsaw
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Mastercard
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Senior / Lead Software Engineer (TypeScript)
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Poland , Warsaw
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Solvd Inc.
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Senior JVM Software Engineer
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Join our Warsaw team as a Senior JVM Software Engineer. Lead the upgrade to Spring Boot 3.x and build new payment data systems using Java 21, Spring, and Hibernate. Enjoy a hybrid model, flexible hours, and a supportive culture with tailored mentoring. Fluent English and Polish are required.
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Poland , Warsaw
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Inetum
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Senior Fullstack Software Engineer
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Join our Warsaw team as a Senior Fullstack Software Engineer. Utilize your expertise in Java, Spring Boot, JavaScript, and React to build robust solutions in a hybrid environment. Enjoy flexible hours, a cafeteria benefits system, and dedicated technical mentoring while working on impactful proje...
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Poland , Warsaw
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Inetum
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Senior iOS Software Engineer
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Join our Warsaw team as a Senior iOS Software Engineer. You'll develop in Swift and SwiftUI, with cross-platform work in Kotlin/Compose. Enjoy a hybrid model, flexible hours, and a rich benefits package including a cafeteria system. Collaborate in a supportive culture that values technical growth...
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Poland , Warsaw
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Inetum
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Senior Software Engineer (JVM/Kotlin)
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Lead the architectural transformation from monolith to modular systems as a Senior Kotlin Engineer in Warsaw. Apply your JVM, Spring, and DDD expertise to scale core insurance platforms. Enjoy share options, a learning budget, and modern benefits in this pivotal role.
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Poland , Warsaw
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hyperexponential
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Senior Software Engineer
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Join our Warsaw team as a Senior Software Engineer. You will design and deploy enterprise-grade software using Python, C#/.NET, and ReactJS. A key focus is solving complex ESRI platform mapping problems to enhance telecom network management tools. This role offers ownership from architecture to d...
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Poland , Warsaw
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SSP Innovations
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Senior Software Development Engineer in Test
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Lead the quality foundation as a Senior SDET in Warsaw. Architect scalable test frameworks and CI/CD pipelines to empower engineering teams. Enjoy a flexible four-day work week and remote allowance while building tools that make quality the path of least resistance.
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Poland , Warsaw
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Awin Global
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Senior Software Engineer
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Join Sportradar's Odds Product Division in Warsaw as a Senior Software Engineer. Develop high-performance, cloud-first services using Java, TDD, and AWS for real-time sports data. Thrive in a collaborative, agile environment that values clean code, innovation, and work-life balance. Utilize moder...
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Poland , Warsaw
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Sportradar
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Senior Software Engineer
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Join Sportradar's Odds Division in Warsaw as a Senior Software Engineer. Build high-performance, cloud-first services using Java/C++, AWS, and Kubernetes on real-time sports data. We value engineering quality, a test-first mindset, and offer a collaborative, global environment with true work-life...
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Poland , Warsaw
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Sportradar
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Software Senior Principal Engineer, Data Path Engineering
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Join Dell in Warsaw as a Senior Principal Software Engineer in Data Path Engineering. Design and develop cutting-edge Big Data storage systems using C/C++ and Python. Leverage your 10+ years of experience in complex, high-performance software and distributed systems. Enjoy top benefits like priva...
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Poland , Warsaw
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Dell
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Senior Software Engineer
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Join Island in Warsaw to redefine the enterprise browser. As a Senior Software Engineer, you'll build scalable, secure software using modern cloud tech and SOLID principles. Mentor peers in a hybrid role, solving complex challenges at the intersection of security and UX. Enjoy a flexible model fr...
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Poland , Warsaw
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Island
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Go/Java Senior Software Engineer
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Join Citi in Warsaw as a Senior Go/Java Engineer. Build secure, cloud-native developer tools using Go, Java, and modern tech like Kubernetes and AWS. You'll enhance software supply chain security in an agile team. We offer great benefits including private medical care, a pension plan, and strong ...
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Poland , Warsaw
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Citi
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Until further notice

About the Senior Software Engineer role

Senior Software Engineer jobs represent a pivotal career stage where technical expertise converges with leadership and strategic influence. These professionals are the cornerstone of software development teams, responsible for designing, building, and maintaining complex, scalable systems that power modern businesses. Moving beyond foundational coding tasks, senior engineers architect solutions, make critical technology decisions, and mentor others, ensuring both product excellence and team growth.

Typically, individuals in these roles undertake a broad spectrum of responsibilities. They are deeply involved in the full software development lifecycle, from requirement analysis and system design to implementation, testing, deployment, and ongoing optimization. A core duty is architectural design, where they choose appropriate technologies, design patterns, and frameworks to create robust, secure, and scalable applications. This often involves building backend services, APIs (RESTful or GraphQL), and dynamic frontend interfaces. They ensure code quality through rigorous practices like code reviews, writing comprehensive tests (unit, integration), and establishing CI/CD pipelines. Furthermore, senior software engineers frequently collaborate with cross-functional partners, including product managers, designers, and DevOps specialists, to translate business needs into technical specifications and seamless user experiences.

The skill set for these jobs is both deep and wide. Proficiency in one or more core programming languages (such as Python, Java, JavaScript/TypeScript, C#, or Go) is essential, alongside expertise in relevant frameworks and libraries for both frontend (e.g., React, Angular) and backend development. A strong grasp of data structures, algorithms, and system design principles is mandatory. Experience with cloud platforms (AWS, Azure, GCP) and their services for computing, storage, and networking is increasingly standard. Knowledge of database technologies, encompassing both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) systems, is crucial. Beyond technical acumen, senior roles demand excellent problem-solving abilities to debug complex issues and optimize performance. Soft skills are equally important; effective communication to articulate technical concepts to non-technical stakeholders, project leadership, and the ability to mentor junior developers are key differentiators.

Common requirements for Senior Software Engineer jobs usually include a bachelor’s degree in computer science or a related field, although substantial equivalent experience is often acceptable. Most positions seek candidates with 5+ years of professional software development experience, demonstrating a proven track record of shipping and maintaining production systems. Employers look for individuals who exhibit end-to-end ownership of projects, a passion for continuous learning in a rapidly evolving field, and a strategic mindset focused on long-term maintainability and business impact. For those seeking to lead through technology and drive meaningful innovation, senior software engineer jobs offer a challenging and rewarding career path at the heart of the digital world.