Senior Backend Developer

5 days ago

Kraków, Czech Republic OneRail Poland Sp. z o.o. Full time

6+ years of experience in backend development, with a strong focus on Node.js & TypeScript. Experience in building RESTful APIs and microservices. Experience with databases such as MySQL, MongoDB, CosmosDB or similar. Understanding of cloud services (Azure and GCP) and containerization (Docker, Kubernetes). Experience with Agile methodologies and CI/CD practices. Familiarity with message queues (e.g., RabbitMQ, Kafka) is a plus. Strong problem-solving skills and ability to work in a fast-paced environment. Excellent communication and collaboration skills. Advanced proficiency in English, both written and spoken (B2+). Why Join OneRail Poland? Innovation at its Core: Work on industry-leading technology that is shaping the future of logistics. Career Growth: Opportunities for professional development and career advancement. Collaborative Culture: Join a team of talented engineers and industry experts. Exciting Challenges: Solve complex problems and contribute to impactful projects. Flexibility: We offer a flexible hybrid work style and flexible employment types to suit your needs, ensuring a work-life balance that works for you. Competitive Compensation: Attractive salary and benefits package. Office location: Kraków, Poland Salary levels: 20 000 – 28 000 PLN/ month Work Style: hybrid (2-3 days from the office / week preferred). Take the next step in your career and become a part of OneRail’s exciting journey ,[Develop, optimize, and maintain backend services and APIs that power our logistics platform., Design and implement scalable and high-performance solutions using Node.js and other modern backend technologies., Implement best practices for security, scalability, and performance optimization., Participate in code reviews, testing, and debugging to ensure high code quality and reliability., Monitor system performance, troubleshoot issues, and proactively optimize processes., Collaborate with frontend developers, product managers, and other stakeholders., Document technical specifications and architectural decisions for future reference., Assist in automating deployment processes and improving CI/CD pipelines., Stay updated with industry trends and emerging technologies to continuously improve our platform.] Requirements: MySQL, MongoDB, Docker, Kubernetes, Agile, CI/CD, Problem-Solving, Communication skills, API, Cloud, Node.js, TypeScript, RabbitMQ, Kafka, Cosmos DB, Azure Additionally: Sport subscription, Training budget, Private healthcare, Small teams, International projects, Free coffee, Bike parking, Playroom, Free snacks, Free beverages, Free lunch, In-house trainings, In-house hack days, Modern office, Startup atmosphere, No dress code, Free parking.

  • Senior Backend Developer

    2 weeks ago

    Remote, Gdańsk, Wrocław, Warsaw, Kraków, Poznań, Czech Republic RemoDevs Full time

    5+ years as a professional developer, with strong experience in Backend Development in a SaaS environment. Expert in Python 3.10+ and Django 4.x (REST APIs, ORM, async tasks). Skilled in system design and building distributed systems on AWS. Deep knowledge of PostgreSQL, Redis, and Elasticsearch/OpenSearch. Hands-on AWS experience (ECS, Lambda,...

  • Senior Backend Node.js Developer @ Shelf

    24 hours ago

    Remote, Wrocław, Warszawa, Kraków, Czech Republic Shelf Full time

    Over 5 years of professional software engineering experience, including more than 3 year specializing in Node.js Deep understanding of distributed systems, concurrency patterns, and event-driven architectures Hands-on experience with AWS or Azure cloud primitives - you've personally provisioned resources, configured services, and built scalable systems using...

  • Senior Backend Engineer

    2 weeks ago

    Remote, Wrocław, Kraków, Łódź, Czech Republic Unravel Full time

    5+ years of experience in backend development, preferably in a microservices architecture. Strong expertise in Node.js and Golang; proficiency in Python is a plus. Experience with PostgreSQL and database design and Key-Value-Stores like redis for high-availability systems. Solid knowledge of containerization (Docker) and orchestration with Kubernetes....

  • Senior Backend Developer @ KAHOOT! POLAND SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

    3 days ago

    Wrocław, Kraków, Czech Republic KAHOOT! POLAND SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ Full time

    5+ years experience as a Backend developer Experience with building scalable, high-performance backend services BSc Degree in Computer Science or related technical field Ability to lead a server-side project through the entire software lifecycle A commitment to high automated test coverage and clean code Experience with Java/Kotlin Experience with Docker and...

  • AWS Backend Developer @ Unisystech Consulting Inc.

    7 days ago

    Warsaw, Kraków, Czech Republic Unisystech Consulting Inc. Full time

    Experience in backend development (4 years+) Cloud expertise in AWS (Lambda, ECS, API Gateway, DynamoDB, S3, etc.) Strong expertise with the Node.js framework Experience in designing microservices and serverless architectures Solid understanding of RESTful and GraphQL APIs development Familiarity with CI/CD pipelines, Docker, and Kubernetes Availability to...

  • AWS Backend Developer @ Unisystech Consulting Inc.

    1 week ago

    Warsaw, Kraków, Czech Republic Unisystech Consulting Inc. Full time

    Experience in backend development (4 years+) Cloud expertise in AWS (Lambda, ECS, API Gateway, DynamoDB, S3, etc.) Strong expertise with the Node.js framework Experience in designing microservices and serverless architectures Solid understanding of RESTful and GraphQL APIs development Familiarity with CI/CD pipelines, Docker, and Kubernetes Availability to...

  • Senior Fullstack Developer @ Link Group

    2 weeks ago

    Kraków, Czech Republic Link Group Full time

    Bachelor’s degree in Computer Science or equivalent professional experience. 5+ years of professional software engineering experience, with a focus on full stack or backend platform development. 4+ years building large-scale, multi-tenant SaaS applications with a focus on backend frameworks, RESTful APIs, and microservices. 2+ years of experience with...

  • Senior .Net Developer

    2 weeks ago

    Kraków, Czech Republic Hitachi Energy Full time

    Your background Master’s or Bachelor’s degree in technical fields: computer science, electrical engineering, automation and robotics, mechatronics, physics, at least 6 years of experience as software developer; Proven experience in designing and developing microservices using technologies such as .NET with strong understanding of RESTful APIs, gRPC,...

  • Senior Backend Engineer @ vonRoll Infratec

    3 days ago

    Kraków, Czech Republic vonRoll Infratec Full time

    Experience in applying architectural styles and using design patterns 5+ years of experience in PHP Knowledge of Symfony or other PHP framework Experience in delivering solutions from kick-off until deployments Experience in maintainig and bug fixing Knowledge of GIT and Git flow Fluent communication in English, written and verbal Proactive communication and...

  • Backend Software Engineer @ Papaya Global

    7 days ago

    Remote, Kraków, Czech Republic Papaya Global Full time

    5+ years of experience in server-side development (we use Java 21+) Strong expertise in the field of microservices (Kubernetes) Experience with web service frameworks (Spring) Experience with cloud infrastructure (S3, SQS, SES) Previous experience with hexagonal architecture, event driven architecture, 12 factor application principles Hands-on experience...