Senior Software Engineer (Java + Neo4j)

Sopra Steria; Katowice; On-site; PLN 133,920 - 178,560; Full time

Benefits offered by this job

Luxmed

Medicover Sport

Worksmile

Languages learning platform

Referral bonus

Life insurance

Conferences

Tech Lunches

Free parking

Workation and fruits

Job summary

Sopra Steria Polska is seeking a Senior Software Engineer (Java + Neo4j) to join a multinational team in Katowice for a major aeronautical project. You will design and deliver robust software in a stable industrial environment with colleagues across France, Poland, Canada and India.

Eligibility requires EU citizenship, residence in Poland, and willingness to commute to Katowice. The role involves hands-on development with Java 11/8–21, Spring, Spring Boot, Angular, OracleDB and PostgreSQL, plus

Qualifications

• 4+ years in a senior or senior-ready role in software
• Strong Java 8–21 experience and Neo4j 4.4–5.x
• Spring 5.2 / Spring Boot 2.3 knowledge
• ElasticSearch 7.17–8.x knowledge
• Git and GitHub proficiency
• English B2+ for international teamwork

Responsibilities

• Design, implement, and deliver high-quality software solutions
• Translate business and technical requirements into clean, efficient code
• Develop, test, and maintain application modules and services
• Apply clean code standards and performance optimization best practices
• Participate in code reviews, unit, and integration testing
• Collaborate with technical leads, clients, and cross-functional teams
• Document processes and share knowledge effectively

Skills

Analytical mindset

Problem solving

Strong communication

English proficiency (B2+)

Tools

Java

Neo4j

Spring

Spring Boot

Angular

OracleDB

PostgreSQL

Jenkins

Docker

GitHub

Job description

Company Description

Sopra Steria is one of the largest players in the tech industry in Europe, known for its consulting, digital services and software development. We operate in nearly 30 countries in the world, hiring more than 55,000 employees.

The Polish branch, as the Global Delivery Center, operates in Katowice since 2007 and has been growing ever since. Currently, our team consists of around 1,000 specialists.

Within the Digital Platform Services department, our teams specialize in areas such as cloud, operating systems, virtualization, databases, backup or storage, as well as networking and security. We also have 1st line support consultants who speak French and English, but also Italian, Spanish, Portuguese and German.

The Application Services department is responsible for areas such as software development, data engineering, testing services, CRM, ITSM and ERP platform integrations, as well as application management for customers in Scandinavia, Benelux, France, Germany, Switzerland and the UK.

Job Description

We are looking for a Senior Software Engineer (Java + Neo4j) to join Sopra Steria Polska for our project for a major aeronautical manufacturer. You will work in an industrial, stable environment in multinational team (France, Poland, Canada, India). The program involves a wide portfolio of applications developed by multiple teams.

Note that we can only offer cooperation to people who has EU citizenship, are located in Poland and are willing to commute to our office in Katowice, Poland.

Responsibilities

• Design, implement, and deliver high-quality software solutions
• Translate business and technical requirements into clean, efficient code
• Develop, test, and maintain application modules and services
• Apply clean code standards and performance optimization best practices
• Participate in code reviews, unit, and integration testing
• Collaborate closely with technical leaders, clients, and cross-functional teams
• Contribute to problem-solving and technical discussions

Tech stack: Java 11, Spring, Spring Boot, Maven, Frontend: Angular, Bazy danych: OracleDB, PostgreSQL, DevOps & CI/CD: Jenkins, Docker, Ansible, SonarQube, GitHub, Web Services: SOAP, REST.

Qualifications

• 4+ years of commercial experience in a senior or senior-ready role
• Strong experience with Java 8–21 (partially also newer versions, depending on the module)
• Hands‑on knowledge of Neo4j 4.4 – 5.X
• Knowledge of Spring 5.2 and Spring Boot 2.3
• Knowledge of ElasticSearch 7.17–8.X
• Proficiency with Git and GitHub
• Analytical and problem‑solving mindset
• Strong communication skills to collaborate with cross‑functional teams
• Proactive and detail‑oriented
• Ability to document processes and share knowledge effectively
• English at B2 level or higher, enabling fluent communication in an international team
• Being open to occasional business trips abroad and regular visits in our office in Katowice

Nice to Have

• Proficiency in French would be a strong advantage

What We Offer

• BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, copyrights, life insurance, certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud), local kindergarten.
• ADDITION: free parking, fresh fruits, workation.

Salary range: 12 000 – 16 000 PLN gross/month

At our organization, we are committed to fighting against all forms of discrimination. We foster a work environment that is inclusive and respectful of all differences.