backend engineer nodejs

🎤 Why voize? Because we’re more than just a job!At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people.We’re changing that by building the AI companion that frees nurses from admin, giving them back up to...

Camunda is seeking a Software Engineer to join the Core/API & Process Automation team. You’ll contribute to Camunda 8’s event-sourced, distributed workflow engine, impacting thousands of customers and millions of people.Expect deep dives into performance, versioning, and concurrency, with opportunities to enable AI agents and contribute to open source...

Threecolts, located in Kraków, Poland, is seeking a skilled Software Engineer to take ownership of features on Inventory Lab’s systems utilizing C# and Java. The ideal candidate will have 5–8+ years in software engineering, proficient in building backend services and APIs.In this fully remote role, you will collaborate closely with cross-functional...

A leading aerospace firm in Poland seeks a Software Developer to enhance aviation technology. The role involves developing .NET applications and contributing to test automation in a collaborative agile environment. Candidates should have extensive experience in software development, particularly with .NET and AWS. This position offers a hybrid work...

Firma Dsv Air & Sea SAU w Warszawie poszukuje Senior IT Developera do rozwijania innowacyjnych rozwiązań backendowych w Pythonie oraz projektów opartych na sztucznej inteligencji. Idealny kandydat ma doświadczenie w Pythonie i SQL oraz praktyczną wiedzę z zakresu GEN AI.Oferujemy zatrudnienie na pełen etat, atrakcyjny pakiet benefitów, programy...

Accenture Poland is seeking a Java Backend Developer with 3+ years of commercial experience. You will design, develop, and maintain backend services using Java 17+, Spring Framework, and Spring Boot 3.x, integrate with Nasdaq Calypso, and work with messaging systems like Kafka, ActiveMQ, or RabbitMQ.You will apply secure coding practices, develop tests with...

A global marketing technology firm in Warsaw is seeking a Senior Software Engineer to design and optimize high-performance backend systems for real-time bidding and machine learning. Candidates should have strong programming skills, experience in developing complex IT systems, and the ability to work within teams. The role offers a highly competitive salary...

Kramp is seeking a Senior Backend Engineer (Java) to take end-to-end ownership of critical domains in the Checkout & Validation team. You will shape the customer journey by building scalable APIs, collaborating with product and business to deliver real value, and shipping in a cloud-based GCP environment.You will work with Java, Spring Boot, and modern tech,...

RubyPlay Limited is hiring a Java Services Engineer to join our Game Services team. You will help design and optimize backend services, collaborate with designers, product teams and client developers to deliver world-class gaming experiences.We value strong Java expertise, distributed systems know-how, and excellent English communication as you’ll work...

RubyPlay Limited in Warsaw offers a remote-first role within the Engineering Team. As a Backend Java engineer, you will design scalable, low-latency game services and APIs while collaborating with game designers, product teams, and client developers.The team focuses on high-throughput systems, distributed simulations, and performance tuning, with...

StorkJet in Katowice is looking for a senior/backend engineer to work with aviation data. You will design and modernize backend services while optimizing data pipelines used by airlines. The role calls for strong expertise in Python or Java and significant experience with production databases.As part of a friendly and dynamic team, you'll help improve...

N-iX in Kraków is seeking a Senior Kotlin Engineer to design, build and operate scalable Kotlin microservices on AWS for a leading European fintech client. You will work as a hands-on IC embedded in client squads.The role emphasizes AI-native delivery, distributed systems, PostgreSQL, Grafana observability, and agile methodologies. It offers flexible...

Wrike’s Backend Reliability (BRE) team builds core reliability solutions for scalable, high‑availability backends. You’ll design, implement, and improve systems like rate limiters, migration tools, and distributed caching to sustain 99.99% uptime.You’ll lead incident investigations, mentor engineers, and promote best practices, while leveraging AI...

Sigli is seeking an experienced backend engineer to join our international team on a 9-month remote project. You will design, develop, and maintain scalable Java microservices and REST APIs powering dashboards, reporting, and data integration for enterprise customers.The role emphasizes PostgreSQL data handling, AI-assisted development, and collaboration...

Star is seeking a hands-on QA contractor to test a backend, multi-service application focused on asynchronous communication patterns. You will spin up services with Docker Compose, write automated tests in Python using pytest, and validate MQTT or other broker-based flows integrated into CI/CD pipelines.The role emphasizes end-to-end and integration testing...

Auctane is hiring an Associate Software Engineer in Poland to contribute to backend development using Java and Spring Boot, and to design and consume RESTful APIs. You will gain hands-on experience with BPM workflows, AWS services, and test automation in a hybrid working model.Join a global engineering team and grow technical skills while collaborating...

dyvenia is seeking a Senior Python Engineer with React experience to build scalable enterprise systems for governing AI agents. You will focus on Python backend development while contributing to platform governance, Python SDKs, and selected frontend work.The role centers on 60–70% Python backend work and 10–20% React frontend, with the rest spent on...

HeadHR poszukuje doświadczonego PHP developera do pracy nad sklepami online opartymi na Magento 2, PrestaShop i WooCommerce. Do obowiązków należy tworzenie i modyfikacja modułów oraz prac nad motywami, a także techniczna analiza wymagań biznesowych i optymalizacja backendu.Wymagane min. 3 lata doświadczenia, dobra znajomość PHP 7/8+, GraphQL, REST...

Kingfisher plc is seeking a Lead Software Engineer to join their Kraków team. This hybrid role involves leading the development of scalable software solutions and providing technical leadership while working closely with cross-functional teams.Ideal candidates will have extensive experience in backend applications, particularly with Java and Kotlin, along...

Persistent Systems seeks a Python Developer to design and build scalable backend systems using cloud-native microservices. You will create robust RESTful APIs, containerized services, and deploy on Kubernetes/OpenShift platforms.The role requires 5+ years of Python experience, strong knowledge of distributed systems, and hands-on DevOps with Docker and...