Lead Backend Engineer: Java & PHP, APIs & Data Pipelines

SoftServe; Polska; On-site; PLN 200,000 - 320,000; Full time

Benefits offered by this job

Equal opportunity employer

Job summary

SoftServe is seeking a Lead Backend Engineer to design and build server-side services and data pipelines for a European public sector client. You will own APIs, data movement, and act as a technical reference for the team, using Java or PHP, with PL/SQL and ETL tooling.

You will lead on API design, data modeling, and performance; participate in multilingual stakeholder discussions; and ensure secure, well-documented services via API gateway and OpenAPI specifications.

Qualifications

• Master's degree or 5 years of higher education with 15+ years IT experience.
• Proficiency in Java and PHP backend development.
• Strong API design experience with RESTful services and OpenAPI/Swagger.
• 5+ years with API Gateway and Postman.
• 10+ years with relational databases (PostgreSQL/Oracle/MySQL) and complex SQL.
• Excellent PL/SQL knowledge.
• Experience with ETL tools (SAP Data Services, Talend, Informatica, DataStage).
• Experience with frameworks such as Spring Boot, Hibernate, Node.js; Python; OpenTelemetry; Git workflows; SVN.
• English or French at B2+ level; strong communication; multicultural teamwork.

Responsibilities

• Design, develop, and maintain back-end services and business logic in Java or PHP.
• Own services including correctness, error handling, performance, and security in production.
• Provide technical leadership via code reviews and knowledge sharing.
• Design, build, document RESTful APIs and OpenAPI docs; manage exposure through API gateway.
• Design and optimize relational data structures; write complex SQL/PLSQL.
• Build and maintain enterprise data pipelines using ETL tools.
• Analyze back-end issues; identify root causes and design solutions.
• Test and document deliverables; follow Git workflows and practices.

Skills

Java

PHP

REST APIs

OpenAPI/Swagger

Postman

SQL/PLSQL

ETL tools

Git workflows

English/French Proficiency

API Gateway

OpenTelemetry

Spring Boot

Hibernate

Node.js

Python

Svn

Education

Master's degree or 5 years higher education

Tools

Spring Boot

Hibernate

Node.js

OpenTelemetry

Git workflows

SVN

OpenAPI/Swagger tooling

Postman

ETL tooling (SAP Data Services, Talend, Informatica, DataStage)

Job description

SoftServe is seeking a Lead Backend Engineer to design and build server-side services and data pipelines for a European public sector client. You will own APIs, data movement, and act as a technical reference for the team, using Java or PHP, with PL/SQL and ETL tooling.

You will lead on API design, data modeling, and performance; participate in multilingual stakeholder discussions; and ensure secure, well-documented services via API gateway and OpenAPI specifications.