backend engineer nodejs

JobCubby is seeking a Senior Software Consultant to own end-to-end solutions from business requirements through development to production support. You will work in an agile team of 4-6 engineers with a dedicated product owner, delivering iterative value while maintaining system stability.You'll apply strong Python backend skills (Django/Flask/FastAPI), cloud...

Tradevest GmbH in Warsaw is seeking a Mid Backend Software Engineer to join a fintech team. You’ll extend micro-services in Go, optimize data flows, and help ensure low latency and high throughput in a live trading environment.You’ll work on RESTful APIs, event-driven patterns, and cloud-native architectures, with on-site collaboration twice a week and...

DCG Poland is seeking a skilled Software Developer to focus on backend and integration solutions in Gdynia, Poland. Responsibilities include building microservices, integrating APIs, and collaborating in an agile team. Candidates should have at least 5 years of experience, strong Java skills, and familiarity with various tools including Spring Boot and...

Sii Poland in Warsaw is seeking an experienced Senior Java Developer to join a team building a modern data integration and processing platform supporting logistics on a global scale. You will design scalable backend services and microservices using Java and Spring Boot, with a focus on event-driven integrations via Apache Kafka.The role requires hands-on...

Keepit is seeking a software engineer to own backend features in a modern C++ stack. You will contribute across the full software lifecycle, build robust components, and collaborate with cross-functional teams to ensure high-quality, maintainable delivery.Ideal candidates have 3+ years in backend development, strong C++(11/14/17/20), Linux, and SQL. English...

About Kalepa Insurance is a $7T global industry built on professional labor: underwriting, claims, pricing, operations, and distribution. Kalepa is building AI that can perform that work. We create professional‑grade AI systems for insurers: software that can read, reason, decide, and act inside real workflows and operate over long‑time horizons. Kalepa...

AmRest Holdings SE in Gdańsk is seeking an experienced PHP Developer to join a cross-functional SAFe team responsible for backend services and API design for our call center support systems. The role focuses on building scalable PHP backends, ensuring high performance and reliable integration with other components.You will work with Product Owner, frontend...

Python or Java | SQL | TB-scale flight data | Aviation AI At StorkJet, we build software that helps airlines reduce fuel consumption and CO² emissions by processing high-volume flight and operational data. This is not a pure maintenance role. We are looking for a senior/expert engineer who wants to modernize and evolve production backend/data-processing...

Alarm.com is building a new Krakow team within EBS Sp. z o.o., focusing on customer experience across mobile apps and backend services. You will implement Android features (Kotlin/Java) and collaborate with product and design to deliver scalable, user-facing solutions.This role expects 2+ years of software development, a CS degree, English proficiency, and...

GitLab is hiring an Intermediate Backend Engineer to transform features from idea to shipping code. You will collaborate with Product, Frontend, Infrastructure, and Security to deliver secure, observable backend services.This is a remote, asynchronous role with strong emphasis on AI integration and high-quality engineering judgment. Expect to work with...

Sowelo Consulting is looking for an experienced Lead Backend Engineer for a fully remote role. You will lead a senior team of backend engineers and handle the core backend for high-impact mobile applications.The ideal candidate has over 8 years of experience with Ruby On Rails and leading backend teams, focusing on performance and reliability. Enjoy flexible...

Expereo International is looking for a Backend Developer in Katowice to enhance their Supplier onboarding and Quote Management teams. You will work daily with Python and C# to build services and solve real-world challenges like optimization and partner integrations. Responsibilities include implementing business logic, designing APIs, and maintaining code...

SwissBorg is seeking an exceptional Backend Developer to design and implement backend services in the trading domain. The ideal candidate has over 5 years of production backend experience, strong TypeScript skills, and familiarity with trading systems. Responsibilities include owning features from schema to UI integration, and writing integration tests....

ARQ is seeking a Backend Engineer to design, develop, and maintain scalable backend systems powering fintech products. You will work on greenfield development, build REST APIs and microservices, and evolve critical systems like payments and treasury management. The stack centers on Java with Spring Boot and Postgres.Ideal candidates have strong Java...

Accenture Poland is hiring a Java Backend Developer to design, develop, and maintain backend services using Java 17+ with Spring Framework and Spring Boot 3.x. You will work on Nasdaq Calypso-based financial systems, integrate messaging platforms, and optimize database queries.You will implement tests with JUnit and follow secure coding practices. The role...

Tatari is on a mission to revolutionize TV advertising. We work with some of your favorite disruptor brands—like Calm, Fiverr, and Rocket Money—to grow their business through linear and streaming TV. We combine a sophisticated media buying platform with proprietary analytics to turn TV advertising into an automated, digital-like experience.Named one of...

Allegro Translations is seeking a Software Engineer 2 to join the Technology team in Warsaw. Design, build, and optimize high-availability backend services in a cloud-native environment using Kotlin, Python, Kafka, and Kubernetes, with full ownership of your microservices from code to production.You will work with MongoDB, integrate AI services, and...

Diverse CG Sp. z o.o. Sp.k. in Gdynia, Poland is seeking a Software Developer to work on backend integration solutions. You will be responsible for building and maintaining microservices using Java and Spring Boot, and integrating APIs in a collaborative agile environment.The ideal candidate has over 5 years of experience and strong SQL knowledge, especially...

The role is about:We are expanding our engineering capabilities and looking for a Senior Backend Developer to join our Core Gateway team. This is a unique, dual-track role where you will play a central part in both the present and future of our infrastructure. You will support, maintain, and extend our existing Perl-based payment gateway ensuring stability...

Luxoft Poland is embarking on a project to generate investment insights from sales and research materials using advanced Agentic AI. You will closely collaborate with business teams, analysts, and architects to quickly understand requirements and implement changes.The role includes working with designers and IT peers, presenting recommendations, reviewing...