Senior Backend Developer @ OneRail Poland Sp. z o.o.

OneRail Poland Sp. z o.o.; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

A logistics technology company in Kraków is seeking a Senior Backend Developer with expertise in Node.js and TypeScript. You will be responsible for developing and maintaining backend services, designing scalable solutions, and collaborating with cross-functional teams. The ideal candidate has over 6 years of experience and advanced English proficiency. This role offers a competitive salary within a flexible hybrid work environment.

Benefits

Sport subscription

Training budget

Private healthcare

Free coffee

Bike parking

Free snacks, beverages, lunch

Modern office, startup atmosphere

Free parking

Qualifications

• 6+ years of experience in backend development with a focus on Node.js & TypeScript.
• Strong experience in building RESTful APIs and microservices.
• Good knowledge of databases such as MySQL, MongoDB, or similar.
• Experience with cloud services like Azure and GCP.
• Understanding of Docker and Kubernetes.
• Familiarity with message queues like RabbitMQ or Kafka is a plus.
• Strong communication and collaboration skills.
• Advanced proficiency in English (B2+).

Responsibilities

• Develop and maintain backend services and APIs for the logistics platform.
• Design scalable solutions using Node.js.
• Participate in code reviews and testing for code quality.
• Monitor system performance and troubleshoot issues.
• Collaborate with frontend developers and stakeholders.
• Document technical specifications.
• Automate deployment processes.

Skills

Node.js

TypeScript

RESTful APIs

Microservices

MySQL

MongoDB

Cloud services (Azure, GCP)

Docker

Kubernetes

Agile methodologies

CI/CD practices

RabbitMQ

Kafka

Problem-solving skills

Communication skills

English proficiency (B2+)

Job description

Senior Backend Developer @ OneRail Poland Sp. z o.o.

Location: Kraków, Lesser Poland Voivodeship, Polska

Salary levels: 20 000 – 28 000 PLN/month

Work Style: hybrid (2-3 days from the office per week preferred).

Responsibilities

• 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.

Qualifications

• 6+ years of experience in backend development, with a strong focus on Node.js & TypeScript.
• Experience building RESTful APIs and microservices.
• Experience with databases such as MySQL, MongoDB, Cosmos DB 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?

• 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.
• Competitive Compensation: Attractive salary and benefits package.

Benefits

• Sport subscription
• Training budget
• Private healthcare
• Small teams
• International projects
• Free coffee
• Bike parking
• Playroom
• Free snacks, beverages, lunch
• In‑house trainings, hack days
• Modern office, startup atmosphere, no dress code
• Free parking