3122 backend developer English-speaking jobs in Warsaw

Backend Engineer responsible for maintaining and developing regulatory reporting functionality for a casino platform. Will analyze business requirements, write API documentation, implement microservice code, and troubleshoot performance issues. Requires 4+ years of experience with Java Spring Boot framework and MySQL.

Senior Applicative DBA to design and implement Oracle database sharding for scalability. Collaborate with development teams on application-level changes and provide ongoing support. Improve data quality during DR incremental dump creation between Oracle and Postgres.

Software Engineer will design, build, and maintain large-scale production services, web applications, and data pipelines. Responsibilities include debugging production issues, researching and analyzing findings, and coaching team members. Requires at least 5 years of commercial Python development experience, including Django, Celery, Snowflake, and PostgresSQL.

You will optimize for performance, time‑to‑market, and contribute to backend services that enable new ... While focusing on backend development, you’ll apply product sense to balance performance with scalability ... growth – continuous development of expertise in an environment that values learning Project As a Senior Backend ... and RDS Previous experience in startups/scaleups Experience with integrating AI/ML capabilities into backend ... Applying product thinking to grasp the "why" behind features and their impact Developing robust backend

observing rapidly changing AI tech capabilities, Zowie is now seeking a dynamic and product‑minded Backend

We’re looking for engineers with: Strong knowledge of AWS or GCP (at least one platform) Strong backend ... - what matters most is your motivation to grow in this field. ,[Work hands-on on cloud-native backend ... scope and estimations, including ballpark calculations., Design, validate, and implement end-to-end backend ... decisions, and best practices., Contribute to defining technology directions for cloud services and backend

On behalf of 8Flow, SD Solutions is looking for a talented Senior Backend Engineer (with AI experience ... capable of handling high-throughput workloads.Strong experience with backend technologies, ideally ... work closely with the Engineering leadership on creating highly-performant, scalable, and reliable backend ... services at scale.Requirements:5+ years of experience building scalable and performant backend systems ... Contact us to get more details about the benefits we offer.Responsibilities:Design and implement scalable backend

What you will be doing As a Backend Developer, you will work on transformational projects within our ... on our promises Collaboration - we can achieve more with others We are currently looking for a Java Developer

Integrate APIs: Connect the app to backend services by implementing and consuming RESTful APIs. ... We’re hiring a Junior Android Developer to strengthen our team and bring fresh perspectives. ... tools, seeing them as essential for accelerating your growth and becoming a highly effective Android developer

entire product lifecycle-from crafting user-friendly interfaces to delivering reliable and scalable backend ... solutions Design and implement backend services and APIs , Support architectural decisions alongside ... Strong background in designing and using RESTful APIs  Experience building stable and dependable backend ... entire product lifecycle-from crafting user-friendly interfaces to delivering reliable and scalable backend ... JavaScript, TypeScript, HTML5, CSS, React, Redux, Data structures, UX, UI, Wireframes, Unit testing, Backend

Qualifications Strong expertise in backend technologies includingGolang Deep understanding ofAPI design ... Proven experience leading backend engineering teams delivering scalable, production-grade APIs and platform ... higher in Computer Science, Engineering, or a related field, with a comprehensive understanding of backend

PL/SQL Developer Miejsce pracy: Warszawa Technologies we use Expected PL/SQL Oracle APEX agile About ... the project At Pretius, we are looking for PL/SQL Developer to health insurance management system project

Participate in architectural discussions and contribute to the evolution of Visa’s backend platforms. ... Backend API Development: Design, develop, and maintain RESTful APIs and microservices using Java and ... Software Engineer at Visa, you will be responsible for designing, building, and maintaining scalable backend ... with product owners, architects, and cross-functional teams to gather and clarify requirements for backend ... Required Skills & Experience: Strong experience in backend development using Java and related frameworks

In the POSA team we focus specifically on Payment Enablement and foundational backend services. ... If you're passionate about backend engineering at scale, excited to drive meaningful architectural ... Mentor and support team growth – Share your backend and JVM expertise through thoughtful code reviews ... Expertise in other Backend languages (like Python, Ruby, .Net) is also welcome – For the DeCap team, ... critical part of this mission is handled by our Enablement Apps group, which builds the applications and backend

Frontend Developer Miejsce pracy: WarszawaTechnologies we use ExpectedJavaScript TypeScript Angular ... Git RxJS About the project At Pretius, we are looking for Frontend Developer to a project for ... lottery devices Working in international team Our requirements 6+ years of experience as Frontend Developer

We are looking forAutomation & Integration Engineer (n8n / Backend)About the position:We are building ... Docker-based environments (dev/stage/prod).Improve workflow performance and migrate heavy flows into backend ... integration and data handling.Skills and qualifications:n8n, Python/Go, REST APIs, Docker3+ years of backend ... systems.We're looking for an experienced engineer who will own workflow automation using **n8n**, build backend ... environment.More at this link: Responsibilities:Build and maintain business workflows in **n8n**.Develop backend

Responsibilities Design, develop, and maintain backend systems using Python Collaborate with cross-functional ... and improve your skills and knowledge Stay up-to-date with the latest trends and best practices in backend ... Write clean, maintainable, and well-documented code Ensure scalability, reliability, and performance of backend ... degree in Computer Science, Software Engineering, or related field Minimum of 4 years of experience in backend

work closely with product teams, data engineers, and DevOps to deliver scalable, secure, and reliable backend ... running in the cloud.Senior Python EngineerYour responsibilitiesDesign, develop, and maintain scalable backend ... in production environments Implement secure authentication and authorization (OAuth2, JWT) Integrate backend ... Support modern CI/CD pipelines and automated testing Our requirements5+ years of experience in backend

You are You're an experienced fullstack engineer who knows how to move smoothly between backend ... Your impact zone Design and build scalable backend services using Node.js Develop frontend components ... reviews, documentation, and mentoring less experienced developers Key responsibilities Work on both backend

Developer in the STREAM team, you will help build and enhance mission-critical systems responsible for ... supporting consumers, retailers, service operations, and national deposit systems.Project DescriptionAs a Backend