Billing Systems Developer (Oracle)

RETN; Warszawa; On-site; PLN 226,000 - 326,000; Full time

Benefits offered by this job

Health insurance

Training and development opportunities

Opportunities to exchange experience

Job summary

RETN, a telecom company with international exposure, seeks a Billing Systems Developer to support, improve, and modernize our existing billing platform in Riga. You will work on enhancing Oracle-based billing functionality, optimizing performance, and integrating with external systems.

This role requires ownership of critical systems and collaboration with internal stakeholders and external partners. We offer an international environment, professional development opportunities, and health

Qualifications

• Strong Oracle Database and PL/SQL development experience.
• Experience with SQL performance tuning and database optimization.
• Good understanding of REST APIs, system integrations, and Git/GitLab workflows.
• Experience maintaining business-critical enterprise applications.

Skills

Oracle PL/SQL

SQL performance tuning

REST APIs

System integrations

Git/GitLab

Experience maintaining enterprise apps

Tools

Git/GitLab

Job description

Billing Systems Developer (Oracle), Riga

We are medium size fast-growing Telecom Company, which is part of the international group with HQ in London, UK. We are dynamic and agile business with positive attitude and passionate about what we do. We are looking for a Billing Systems Developer to support, improve, and modernize our existing billing platform, with the long-term objective of evaluating and implementing a next-generation solution.

Required technical skills:

• Strong Oracle Database and PL/SQL development experience.


• Experience with SQL performance tuning and database optimization.


• Good understanding of REST APIs, system integrations, and Git/GitLab workflows.


• Experience maintaining business-critical enterprise applications.

Preferred:

• Experience with telecom billing, OSS/BSS, or financial systems.


• Experience with application modernization or migration from legacy platforms.


• Experience with Linux environments and open-source technologies.


• Ability to analyse complex business processes and translate them into technical solutions.


• Comfortable working with internal stakeholders and external development partners.


• Self-driven, analytical, and able to take ownership of critical systems and their long-term evolution.

We Offer

• Employment in an international company;


• A professional team and friendly working environment;


• Health insurance;


• Training and professional development opportunities;


• Opportunities to exchange experience with colleagues from other countries.