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Senior Developer Poland Jobs

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Python Counterparty Credit Risk Senior Developer - VP
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Senior Python Developer (VP) sought for Citi’s Counterparty Credit Risk team in Warsaw. You will develop and maintain the ACE application, integrating quant models with Front Office systems. Requires deep Python, mathematical finance, and stochastic calculus skills. Benefit from a 6% pension cont...
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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 Backend Developer
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Poland , Łódź
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Not provided
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Arrive
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Senior Java Developer
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Poland , Warsaw
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Sportradar
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Senior AI Agent Development & Prompt Engineering
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Join our team as a Senior AI Agent Development & Prompt Engineering expert. You will design and optimize AI-driven agentic systems using Python and frameworks like LangChain. This remote role in Poland offers private medical care and a dynamic, innovative environment working with top-tier engineers.
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Poland
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110.00 - 125.00 PLN / Hour
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Cyclad Sp. z o.o.
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Senior Java Developer
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Join our team as a Senior Java Developer to build a cutting-edge, cloud-native order management system for the airline industry. You will design and deploy high-scale microservices using Java, Spring, and GCP within an Agile environment. This hybrid role in Poland offers a clear career path, deve...
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Poland
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Not provided
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Infogain
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Senior AEM Developer / Technical Lead
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Lead AEM development projects in Katowice as a Senior Developer and Technical Lead. This role requires 5+ years of expertise in AEM and Java, with a strong focus on Agile methodologies and stakeholder collaboration. You will ensure project quality while mentoring junior team members.
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Poland , Katowice
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NTT DATA
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Senior Full-Stack developer - Java/JavaScript
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Join our team in Warsaw as a Senior Full-Stack Developer. You will build and enhance the Prime Risk Analytics Platform using Java, Spring Boot, Angular, and TypeScript. This role requires expertise in financial risk concepts, SQL Server, and CI/CD pipelines. We offer a competitive benefits packag...
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Poland , Warsaw
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Citi
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Senior Full Stack Developer
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Join our Warsaw team as a Senior Full Stack Developer. You will build scalable software using JavaScript/TypeScript, PHP (Laravel/Symfony), and modern frameworks like Next.js. We offer a competitive salary, private medical care, 21 days vacation, and a collaborative environment for growth.
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Poland , Warsaw
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Fireart Studio
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Senior Angular Developer
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Join our team as a Senior Angular Developer for 100% remote work from Poland. You will lead frontend development using Angular 18 and NgRx in an Nx monorepo, working directly with clients. We seek a proactive expert with 5+ years of Angular experience to drive architecture and mentor within a Scr...
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Poland , Wrocław; Bielsko-Biała
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110.00 - 140.00 PLN / Hour
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Cshark
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Senior Java Developer
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Join our Kraków team as a Senior Java Developer. You will architect a high-scale, event-driven messaging platform for the travel industry, handling millions of daily notifications. We require deep Java/Spring Boot expertise, GCP experience, and a focus on HA, observability, and deliverability. En...
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Poland , Kraków
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130.00 - 150.00 PLN / Hour
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Infogain
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.Net Senior Developer (Telecom Project)
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Join our team as a Senior .NET Developer and shape a cutting-edge Contact Center Platform. Leverage your 5+ years with .NET, C#, React, and Azure SQL in a key telecom project. Enjoy remote work in Poland, competitive pay, and career growth while collaborating with global clients like PayPal and A...
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Poland
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Itransition
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Senior Salesforce Marketing Cloud Developer
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Seeking a Senior Salesforce Marketing Cloud Developer for freelance projects in Poland. You will design and implement complex, enterprise-grade solutions using Email Studio, Journey Builder, and APIs (AMPscript, SSJS, SQL). This role requires 5-8+ years of hands-on experience, strong integration ...
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Poland
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Valtech
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Senior Full-Stack Developer (Java) - Enterprise Applications
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Join Citi's global IDEAS team in Warsaw as a Senior Full-Stack Java Developer. Design and enhance scalable enterprise applications and microservices using Java EE, REST APIs, and modern UI technologies. Leverage your 5+ years of experience in a collaborative, global environment with a comprehensi...
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Poland , Warsaw
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241750.00 - 411650.00 zł / Year
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Citi
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Senior Fullstack Developer
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Join our Kraków team as a Senior Fullstack Developer (Java/React). Build a high-scale travel communication platform handling millions of daily emails and SMS. Work with modern tech like Spring Boot, TypeScript, Kafka, and GCP in a hybrid model. Enjoy development budgets, clear career growth, and ...
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Poland , Kraków
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130.00 - 150.00 PLN / Hour
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Infogain
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Senior Product Developer
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Join Mastercard in Warsaw as a Senior Product Developer. You will own the end-to-end development of our global API platform, leveraging AI/ML to create scalable features. We seek a technical product expert with strong backlog management and agile experience. This role offers collaboration with in...
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Poland , Warsaw
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Not provided
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Mastercard
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Senior Frontend Developer
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Join a leading corporation in Warsaw as a Senior Frontend Developer. Utilize your 5-8 years of experience with Angular, TypeScript, and modern JavaScript to build scalable banking applications. Enjoy remote work, private healthcare, and a supportive international team while ensuring high code qua...
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Poland , Warszawa
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150.00 - 160.00 PLN / Hour
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Devire
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Senior CMS Drupal Developer
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Join our international team as a Senior Drupal Developer in Warsaw. Lead the technical transition to a new Drupal 11 multisite platform, leveraging your deep expertise in Drupal, WordPress, and modern front-end frameworks like React. Enjoy benefits including private medical care and a multisport ...
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Poland , Warsaw
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150.00 - 160.00 PLN / Hour
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Cyclad Sp. z o.o.
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Senior Dynamics 365 CRM Developer
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Join our team as a Senior Dynamics 365 CRM Developer in Warsaw. Lead the design and customization of our enterprise Sales module, integrating with a large-scale internal system. Utilize your expertise in .NET/C#, Dataverse, and Azure DevOps to deliver robust solutions. This role offers a key tech...
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Poland , Warsaw
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Not provided
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RED Commerce - The Global SAP Solutions Provider
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Senior Gen AI Developer
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Poland , Warsaw
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Not provided
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Citi
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Senior JavaScript React Developer
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Join a top international team as a Senior JavaScript React Developer in Warsaw. Build high-performance, multi-country digital platforms using React.js and Next.js. Drive best practices in a modern tech stack within an Agile environment. Enjoy benefits like private medical care and a multisport card.
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Poland , Warsaw
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125.00 PLN / Hour
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Cyclad Sp. z o.o.
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About the Senior Developer role

Senior Developer Jobs represent the pinnacle of technical expertise and leadership within software engineering teams. Professionals in these roles are seasoned experts who not only write high-quality code but also architect complex systems, guide technical strategy, and mentor less experienced engineers. They are the crucial bridge between high-level business objectives and practical, robust technical implementation, ensuring that software solutions are scalable, secure, and aligned with long-term organizational goals.

Typically, a Senior Developer is responsible for the entire software development lifecycle of significant components or applications. This includes leading the design and architecture of new systems, often leveraging modern paradigms like microservices and event-driven architecture. They write, review, and debug complex code, setting standards for quality and maintainability. A key part of their role involves making pivotal technology stack decisions, selecting frameworks, databases, and tools that best fit project requirements. They collaborate closely with cross-functional teams, including product managers, business analysts, and other stakeholders, to translate business needs into technical specifications. Furthermore, Senior Developers are expected to drive best practices in coding, testing, and deployment, frequently overseeing CI/CD pipelines and advocating for DevOps and security principles (DevSecOps).

The common skill set for these jobs is both deep and broad. Mastery of one or more core programming languages (such as Java, Python, C#, or JavaScript) and their associated ecosystems is fundamental. Expertise in relevant frameworks (e.g., Spring Boot, .NET Core, React, Angular) is essential. Senior Developers possess a strong grasp of system design principles, database management (both SQL and NoSQL), and API design (REST, GraphQL). Experience with cloud platforms (AWS, Azure, GCP), containerization (Docker), and orchestration (Kubernetes) is increasingly standard. Beyond technical prowess, soft skills are critical: leadership, clear communication, effective mentorship, problem-solving, and the ability to manage time and priorities across multiple projects are what distinguish a senior professional.

Typical requirements for Senior Developer jobs often include a bachelor’s degree in computer science or a related field (or equivalent practical experience) and a substantial track record, usually between 5 to 10+ years of progressive software development experience. Demonstrated experience in leading development initiatives, making architectural decisions, and working within Agile/Scrum methodologies is commonly sought. The role demands a proactive, strategic thinker who stays abreast of emerging technologies and can drive innovation while ensuring system reliability and performance. For those seeking to advance their impact beyond pure coding into areas of design, strategy, and team leadership, exploring Senior Developer jobs is the definitive next step in a thriving tech career.

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