Backend Developer

Kraków / Remote work · Web Development

Job openings     Backend Developer

Online interview
Backend Developer

A job offer for people who have a backend at their fingertips. The Opsenio company deals with the creation of systems supporting the management of resources owned by companies operating in various sectors. System solutions dedicated to many interesting industries, including: energy, gas, port, railway, chemical, industrial, financial and public. Projects in these industries are carried out both in Poland and abroad, so you will certainly need communication skills in Polish and English. If you can construct a compatible and concise database, please do not hesitate to contact us. Let's talk about it!


  • Spring
  • Spring Core
  • Spring Boot
  • MVC
  • Batch
  • JPA
  • GraphQL
  • H2
  • Hibernate
  • Kafka
  • ActiveMQ
  • Docker
  • JUnity
  • Kubernetes
  • MS SQL Server
  • ReactJS
Nice to have:
  • Knowledge of application back-end programming
  • Knowledge of microservices architecture and REST / GraphQL / APIs
  • Knowledge of SQL and noSQL DB and queuing mechanisms (OracleDB, MariaDB, Mongo RabbitMQ)
  • Willingness to act in a dynamic environment
  • Communication and organizational skills at a high level


  • Developing and maintaining applications, systems and customer codes
  • Analyzing, programming, testing systems
  • Advising on solutions to improve the operation of systems


  • Multisport card
  • Private medical care
  • English lessons
  • Free coffee
  • Integration events
  • Bonus programs
  • Opportunity for personal development as part of training and building real IT with us

Work type

Remote work
Onsite: Kraków

Job position

Java Developer


Web Development

Employment type

B2B - Full time

15000 - 21000 PLN net / miesięczne

Contract of employment

12500 - 17500 PLN gross / miesięczne

Contact person

Bartosz Rumian
HR Specialist

Your potential manager

Dawid Tryliński
Java Developer

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