269 backend developer English-speaking jobs in Łódź Voivodeship

We are looking for a Senior Backend Developer to join our Optimization Team at Programmers Force. In this role, you will focus on optimizing backend systems for performance, scalability, and efficiency while working on large-scale, high-traffic workloads. Your responsibilities will include refactoring backend code, improving database queries and indexing, troubleshooting bottlenecks, and collaborating with cross-functional teams to scale backend architecture. You will ensure systems remain secure, reliable, and efficient while mentoring junior team members and enhancing test coverage. The ideal candidate has 4+ years of backend development experience with strong expertise in PHP (Laravel), Node.js, Python, MongoDB, and relational databases (MySQL, PostgreSQL). You should also be proficient in API development (REST/GraphQL), performance optimization, Docker, Git, and CI/CD practices. Experience with Redis, RabbitMQ, AWS/Azure, and backend security best practices will be considered a plus.

As a .NET Developer you will be working for our client, a leading company in the online banking sector ... that is developing modern backend solutions to support secure, scalable, and high-performing financial ... You will play a key role in designing and implementing backend systems, ensuring code quality through ... Your main responsibilities: Implement backend solutions using .NET Core, .NET Framework, and MS SQL Ensure ... to knowledge sharing You're ideal for this role if you have: At least 3 years of experience in backend

We are looking for an Embedded Backend & Frontend Developer to join our team working on the EV Charging ... In this role you will be: Tech Stack: Backend: Java 17, Spring Boot, ActiveMQ, MySQL, H2, WebSocket ... Frontend: Vue.js Platform: Embedded Linux Scope of Work: Backend Development Requirements: Database ... developing advanced charging solutions for electric vehicles, combining embedded systems with modern backend ... applications to support specific business logic changes, ensuring flexibility in UI adjustments based on backend

from 18000 pln to 21000 pln brutto JAVA DEVELOPER BACKEND Gdańsk/ Lodz/Warsaw What you’ll be doing as ... BACKEND Gdańsk/ Lodz/Warsaw What you’ll be doing as Senior Java Developer: -Developing code and assuring ... BACKEND Gdańsk/ Lodz/Warsaw What you’ll be doing as Senior Java Developer: -Developing code and assuring ... SENIOR JAVA DEVELOPER LOCATION: GDYNIA, GDAŃSK, ŁÓDŹ, WARSZAWA TYPE: HYBRID (4 time a month) SALARY: ... Senior Java Developer: -Developing code and assuring code quality, -Cooperating with your team: developers

We are looking for a Backend Developer to join our experienced and agile team on a long-running, backend-intensive ... Senior Backend Developer SKILLS: .NET | GO | Rust | NoSQL | PostgreSQL B2B: PLN 130 - 170 / Hour LOCATION ... Here’s a set of skills we require: Strong experience in backend development, ideally using .NET . ... and Requirements: A Roadmap to Your Professional Success Scope of responsibilities: Own and evolve backend

. :) We are looking for a candidate for the position of Full Stack Developer for a team developing 2D ... Our gaming platform is developed by compact teams of experienced and agile backend developers solving

Overview We seek a highly skilled Backend (GoLang) Developer to join our growing team. ... Redis Websockets What you need to be successful At least 7 years of commercial experience in developing Backend

(relocate to London) Backend Developer - Node.js - Smart City Full Stack Developer (Java + React/React ... Senior Full Stack Developer (Remote, Contract) Senior Fullstack Developer (NodeJS + ReactJS) - Smart ... Proficiency in .NET Core/.NET 6+ (C#) for backend development. ... This role requires a strong technical background in both frontend and backend development, cloud-based ... design, develop, and maintain scalable web applications with high-quality user experience and robust backend

with Node.js – Telco project Full Stack / Backend Developer (DataCoP) We’re unlocking community knowledge ... Senior Fullstack Developer (NodeJS + ReactJS) - Smart City Senior Fullstack Developer (NodeJS + ReactJS ... ) - Smart City Software Developer (.NET + Node.js) - Smart City Full Stack Developer (Java + React/React ... ) - Smart City Front-end Developer (Angular) I Poland I Deloitte Digital Software Developer (.NET + Node.js ... Contribute to both backend development and, when needed, frontend development using React.

developer frontend developer fullstack developer devOps product owner This is how we work on a project ... or full stack developer). ... Extensive experience in building backend applications using Node.js. ... Proven experience working with RESTful APIs and integrating complex backend systems. ... minimum of 3 years of experience in software development focusing on the TypeScript tech stack (as a backend

We're searching for a senior backend developer who's brilliant with Python, PostgreSQL, and REST ... in Computer Science, Engineering, or something similar. 5 years of hands-on experience as a Python Developer

As a Senior Front End Web Developer at Mozaiq, your role will be focused and impactful. ... solutions, specializing in front-end development with Next.js while also managing headless WordPress as a backend

quality and test coverage Take part in architecture discussions ✅ Must have 6 years of experience as Java Developer ... About the project You’ll join a team working on the backend of a platform used in mission-critical environments ... Responsibilities Design and develop scalable backend services Participate in legacy-to-modern stack transitions

We are looking for a full-stack developer with a backend focus, but frontend skills will come in handy ... Software Developer (Java React) - Smart City Miejsce pracy: Łódź Technologies we use Expected Spring ... necessary data Our requirements Hands-on development experience in Java or Kotlin, with a focus on backend

We are seeking a skilled SAP HANA Developer to join our team at a global leader in semiconductor manufacturing ... role, you will be responsible for designing and maintaining cutting-edge data models, pipelines, and backend ... HANA native models, such as Calculation Views, CDS Views, Stored Procedures, and SQLScript to support backend ... business processes with custom analytics, KPI tracking, and actionable insights, all powered by SAP HANA backend

Overview EMEA Services Team is looking for a Fullstack Developer to join our team in Łódź. ... This role requires a strong understanding of both frontend and backend technologies, with a focus on ... other developers to deliver high-quality features Collaborate with the Platform Team Develop robust backend ... Qualifications Proficiency in web-frontend frameworks (preferable React or Angular) Experience with backend

About your team You’ll join AI Engines – the team building the backend “brain” of AI Agents in Text App ... You will be responsible for: Building and maintaining the core backend architecture (Vector Database, ... Our team makes this possible by designing scalable backend systems that will be able to handle millions ... Core backend & languages: Node.js, TypeScript, Fastify Databases & data handling: PostgreSQL, Redis, ... You may be a good fit for this role if you: Have 6 years of experience in backend development, building

or full stack developer). ... Extensive experience in building backend applications using Node.js. ... Proven experience working with RESTful APIs and integrating complex backend systems. ... minimum of 3 years of experience in software development focusing on the TypeScript tech stack (as a backend

Build scalable and secure backend applications in Java or Node.js . ... Strong experience in backend development with Java or Node.js . ... Key Responsibilities Design, develop, and maintain APIs, backend services, and integrations using MuleSoft

Senior .Net Developer (Expert) Miejsce pracy: Łódź Technologies we use Expected .NET Framework .NET Core ... As a Lead Senior .NET Developer you will be working for our client, a leading company in the online banking ... You will play a key role in developing and implementing backend systems that ensure high performance ... Your responsibilities Implement backend solutions using .NET Core, .NET Framework, and MS SQL Ensure ... junior developers and provide technical leadership Our requirements At least five years of experience in backend