8,254 senior backend developer jobs in Polska.

• Hybrydowo
• Kontrakt

$2k USD

We are looking for an experienced Senior React Native Developer to join our team and contribute to the development of high-quality mobile applications. The ideal candidate has a strong understanding of modern state management solutions and mobile development tooling, and is passionate about delivering seamless user experiences ...

• Kontrakt

$2k USD

We're seeking a Senior Full-stack Developer to help build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL and OpenSearch for database management. The product runs in a multi-cloud environment and relies heavily on Databricks. Responsibilities Build and maintain web ...

• Kontrakt

$2k USD

We're seeking a Senior Full-stack Developer to help build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL and OpenSearch for database management. The product runs in a multi-cloud environment and relies heavily on Databricks. Responsibilities Build and maintain web ...

• Kontrakt

$2k USD

We're seeking a Senior Full-stack Developer to help build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL and OpenSearch for database management. The product runs in a multi-cloud environment and relies heavily on Databricks. Responsibilities Build and maintain web ...

• Kontrakt

$2k USD

We are looking for a Senior Full-stack Developer to join a team building a new product that leverages Python and FastAPI on the backend, React/TypeScript on the front end, with database management powered by PostgreSQL and OpenSearch. The product operates in a multi-cloud environment and makes heavy use of Databricks. Responsibilities ...

• Kontrakt

$2k USD

We are looking for a Senior Full-stack Developer to join a team building a new product that leverages Python and FastAPI on the backend, React/TypeScript on the front end, with database management powered by PostgreSQL and OpenSearch. The product operates in a multi-cloud environment and makes heavy use of Databricks. Responsibilities ...

• Kontrakt

$2k USD

We are looking for a Senior Full-stack Developer to join a team building a new product that leverages Python and FastAPI on the backend, React/TypeScript on the front end, with database management powered by PostgreSQL and OpenSearch. The product operates in a multi-cloud environment and makes heavy use of Databricks. Responsibilities ...

• Kontrakt

We are seeking a talented SAP BW/HANA Developer to join our team at a global leader in semiconductor manufacturing and high-tech innovation. In this role, you will design and maintain robust data models, workflows, and reporting solutions to meet the complex needs of manufacturing, engineering, and business domains. If ...

• Zdalnie

... Strong collaboration and communication skills Focused on long-term quality and engineering excellence Responsibilities Independently own and navigate a large backend ecosystem consisting of multiple services with minimal ramp-up support Develop and maintain backend services using Golang Write clean, scalable, and maintainable ...

• Hybrydowo

... satisfaction through well-designed, intuitive interfaces Bridge the gap between business requirements and technical implementation via user-centered design Allow backend engineers to remain focused on core platform and integration work Mandatory Skills Description: Minimum 5+ years hands-on application development experience ...

• Zdalnie
• Hybrydowo

Senior Fullstack Developer (Java+Angular or React) Your responsibilities: Implement and evolve both frontend and backend components Build modern web applications using frameworks such as React or Angular Develop backend services (Java / Spring or equivalent) supporting application functionality Write high-quality, well-tested, ...

• Zdalnie

... acceleration partner with over 20 years of experience, based in Poland, delivering software development for international clients. We seek an experienced iOS Developer to own an existing secure remote-access client and drive its Stage 2 development, in collaboration with QA, security, and backend teams. You will stabilize ...

• Kontrakt

$2k USD

We are adding a Senior Full Stack Developer (Angular & https://jobeax.com/link/JSd7UYCSg572jJDY) to help evolve an enterprise AI-driven platform with robust web apps and backend services. You will deliver Angular + NestJS functionality, design PostgreSQL data models, and integrate streaming solutions while collaborating ...

• Kontrakt

$2k USD

We are looking for a Senior Full Stack Developer (Angular & https://jobeax.com/link/JSd7UYCSg572jJDY) to build and support scalable web apps and backend services for an enterprise AI-driven platform. You will deliver Angular interfaces, NestJS RESTful microservices, and PostgreSQL data layers, partnering in Agile and strengthening ...

• Zdalnie

... Znajomość relacyjnych baz danych, ze szczególnym uwzględnieniem PostgreSQL; Doświadczenie w pisaniu testów automatycznych: Karma/Jest (Frontend) oraz JUnit/Spock (Backend); Podstawowa znajomość lub doświadczenie w pracy z systemami kolejkowymi (Kafka lub RabbitMQ); Zrozumienie mechanizmów bezpieczeństwa w aplikacjach webowych ...

• Zdalnie
• Pełny etat

Svitla Systems Inc. is looking for a Senior .NET Developer (AI/ML Integration) for a full-time position (40 hours per week) in Poland. Our client is an AI-driven SaaS company delivering a unified platform for retailers. We're looking for a Senior .NET Developer who combines strong backend engineering skills with hands-on ...

600 - 650 £ / dziennie

Senior Java Developer Sheffield £600pd - £650pd We are seeking a highly motivated Java Developer to join a high-performing team building next-generation trading and risk systems. This role offers end-to-end involvement across the software development lifecycle, including the development of major greenfield components within ...

• Pełny etat

... advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good. Your impact: As a Senior Full Stack .NET Developer , you will be responsible for designing, developing, and delivering high‑quality software solutions. You will support teams in applying ...

• Zdalnie

... technology company specializing in creating innovative solutions for the e-commerce and fintech industry, which values creativity, commitment, and teamwork. Senior Frontend Developer (React + React Native) We offer: Attractive salary and bonus system, Possibility of remote work and flexible working hours, Private medical ...

• Zdalnie
• Kontrakt

Work model: 100% remote (candidates must be based in Poland) Contract type: B2B Industry: Banking / Investment Banking We are looking for an experienced Senior .NET Developer to join a distributed engineering team working on critical banking systems. The role focuses on extending and modernising applications used across ...