April 10, 2026
Junior Software Engineer (Java)
Junior • Hybrid
5,500 - 8,500 PLN/mo
Katowice, Poland
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 Junior Software Engineer (Java) to join Sopra Steria Polska and support the development team responsible for integrating the Simpl-Open middleware into the Language Data Space (LDS) ecosystem. In this role, you will contribute to software development, technical integration, configuration, testing, deployment support, and operational troubleshooting. You will collaborate closely with senior engineers, architects, and technical leads as part of a cross-functional engineering team delivering interfaces and runtime integrations between LDS components and Simpl-Open services.
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:
Implement backend services, API integrations, and technical adapters under the guidance of senior engineers.
Configure and integrate identity, authentication, authorization, and connector-related services.
Develop and maintain integration logic for metadata exchange, catalogue interfacing, and validation flows.
Support vocabulary-related interoperability, mappings, and configuration tasks.
Prepare and execute technical tests, including integration tests, deployment verification, and regression checks.
Investigate incidents, defects, and integration issues in development and test environments.
Contribute to CI/CD activities, containerised deployments, and runtime support tasks.
Produce concise technical documentation, configuration notes, and implementation handover material.
Tech stack on the project:
REST APIs, Keycloak, OAuth 2.0, OpenID Connect, Java, Spring Boot, JSON, YAML, OpenAPI, Docker, Kubernetes.
Qualifications
Must have requirements:
Strong proficiency in Java and Spring Boot for backend service development.
Hands‑on experience with containerization and orchestration tools, specifically Docker and Kubernetes.
Experience with backend development and API-based integration.
Good command of secure application integration and service-to-service communication.
Experience with version control, debugging, testing, and software delivery practices.
Familiarity with containerized environments and deployment support activities.
Ability to analyze issues methodically and deliver reliable technical fixes.
Willingness to learn, document work clearly, and contribute in a team-oriented delivery setting
Experience working with REST APIs and API specification formats such as OpenAPI using JSON/YAML.
Knowledge of authentication and authorization technologies, including Keycloak, OAuth 2.0, and OpenID Connect.
Degree in Computer Science, Software Engineering, Information Systems, Telecommunications, or equivalent practical experience.
Professional experience in software development, systems integration, platform engineering, or backend delivery.
EU citizenship.
Fluent English: B2/C1.
Being open to occasional business trips abroad and visits to our office in Katowice.
Nice to have requirements:
Exposure to identity and access management platforms, metadata catalogues, semantic technologies, or data-platform delivery is an advantage.
Experience with public-sector digital platforms, interoperability solutions, or EU-funded technical environments is also beneficial.
Additional Information
What we offer:
• BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, copyrights, life insurance, workation
• DEVELOPMENT OPPORTUNITIES (UoP): certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud)
The recruitment process for this position consists of two stages:
• a short phone call with a recruiter (30 min max)
• one-hour long interview on Teams (with both general and technical questions)
Salary range:
UOP: 5 500 - 8 500 PLN gross/month.
All information about salary range and its additional components will be provided during the 1st stage of recruitment process.
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.
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The client is searching for some assistance for their Digital team. The team is engaged in launching custom made sites for the customers in various business areas – insurance, agriculture, construction. You will be dedicated to one project until the delivery phase with a possibility to switch between projects if such a need occurs. You will have an opportunity to work in an international environment with a high-quality software and establish relationships with customers from various business fields. 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: Technical analysis of the tickets Resolving tickets (collaboration with the team) Implementation of the solutions Testing code (writing automated tests) Preparing your software for code review Performing code review Updating JIRA board and own tickets Collaboration with the Lead Technical Developer who sets CI/CD pipelines Collaboration with the customers Suggesting new up-dates and improvements Up-dating and completing of documentation Tech stack on the project: Drupal (9,10,11), Drupal configuration development, Drupal Theme layer, PHP, MySQL DB, GIT, DDEV (local dev environment) based on Docker, Symfony, Solar, Varnish, HTML, JavaScript, TypeScript, CSS/SCSS, Hosting on Linux, WSL2, NGINX/Apache, React Qualifications Must have requirements: Experience with Drupal (9+) Strong knowledge of PHP Experience working with Git version control Hands-on experience with DDEV as a local development environment based on Docker Experience in Drupal Configuration Development Knowledge of the Drupal Theme layer Experience working with MySQL databases Experience in writing automated tests (PHPUnit) Excellent communication skills English level B2/C1 Bachelor’s degree in Technical Field EU citizenship. Fluent English: B2/C1. Being open to occasional business trips abroad and visits to our office in Katowice. Nice to have requirements: Drupal Acquia Certification Symfony Solar Varnish Leadership experience Additional Information What we offer: • BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, copyrights, life insurance, workation • DEVELOPMENT OPPORTUNITIES (UoP and B2B): certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud) The recruitment process for this position consists of 3 stages: a short phone call with a recruiter (30 min max) one-hour long interview on Teams (with both general and technical questions) interview with project representatives Salary range: UOP: 12 000 – 16 000 PLN gross/month. B2B: 100-140 PLN net/h All information about salary range and its additional components will be provided during the 1st stage of recruitment process. 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.
Technology
Sopra Steria
DevOps Engineer (AI)
Senior
Hybrid
Katowice, SL, Poland
12,000 - 16,000 PLN/mo
🏢 Summary: DevOps Engineer (AI) role focused on building, automating, and optimizing development environments and AI-driven solutions within an international agile team. The position involves implementing Infrastructure as Code, supporting CI/CD pipelines, and delivering scalable AI solutions on AWS. You will enhance developer platforms, ensure security best practices, and contribute to continuous improvement and automation initiatives. 🗂️ Requirements: Advanced experience in software development, Strong hands-on experience with AWS Infrastructure as Code, Experience delivering AI solutions at scale, Knowledge of AI development including agentic approaches, Good knowledge of IT security principles, Experience with CI/CD automation, Practical experience with IDEs, Service management knowledge (ITIL or similar) 📃 Skills: Git, Python, TypeScript, AWS, Terraform, CDK, Ansible, AmazonQ, Kiro, Claude, CICD, Scripting, VSCode, IntelliJ, ITIL, AI 🏢 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 DevOps Engineer (AI) to join Sopra Steria Polska and one of our innovative international squads. You will play a pivotal role in the development and optimization of our development environment. The team is responsible for implementing, maintaining, and supporting developer tools and platforms. Note that we can only offer cooperation to people who are located in Poland and have EU citizenship. Responsibilities: Collaborate with team members to write efficient, reusable, and maintainable code. Contribute to the continuous improvement of existing services by identifying opportunities for optimization. Write unit tests and integration tests where necessary to increase the confidence during development and deployment of the code. Utilize Gitlab, CI/CD, and scripting skills to automate the deployment and analysis of code. Suggest and implement automation to streamline deployment, configuration, and monitoring tasks. Work closely with cross-functional team members, including architects, system administrators, and other developers, to ensure seamless integration and interoperability. Participate in agile ceremonies, including sprint planning, daily stand-ups, and sprint reviews, to foster effective collaboration within the squad. Engage in knowledge-sharing activities and contribute to the collective expertise of the team. Document code, scripts, and configurations thoroughly to ensure maintainability and knowledge transfer within the squad. Contribute to the creation and maintenance of technical documentation for the squad Tech stack on the project: Git, Python, TypeScript Amazon Q, Kiro, Claude Terraform, CDK, Ansible Qualifications Must have requirements: Good knowledge of IT security principles. Advance experience in software development (Git, Python, TypeScript) AI tools for Devs (Amazon Q, Kiro, Claude), coding assistants, AI agents. Experience with AI development including agentic, experience with delivering AI solutions to customers at scale Practical experience with IDEs (VS Code, IntelliJ) Must have a strong hands-on experience in AWS Infrastructure as Code (Terraform, CDK, Ansible); Service management experience (ITIL or similar) EU citizenship Fluent English: B2/C1. Being open to occasional business trips abroad and visits in our office in Katowice Nice to have requirements: Clearance Additional Information What we offer: BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, copyrights, life insurance, workation DEVELOPMENT OPPORTUNITIES (UoP and B2B): certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud) The recruitment process for this position consists of two stages: a short phone call with a recruiter (30 min max) one-hour long interview on Teams (with both general and technical questions) Salary range: UOP: 12 000-16 000 PLN gross/month. B2B: 100-140 PLN net/h All information about salary range and its additional components will be provided during the 1st stage of recruitment process. 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.
Technology
Sopra Steria
Lead Technical Tester
Senior
Hybrid
Katowice, SL, Poland
12,000 - 16,000 PLN/mo
🏢 Summary: The offer is for a Lead Technical Tester responsible for leading comprehensive testing efforts across data and AI-driven software projects, ensuring high quality, performance, and security. The role combines hands-on test automation in Python with designing containerized end-to-end environments and improving CI/CD and observability practices. It involves close collaboration with developers and ownership of testing strategy across the full software lifecycle. 🗂️ Requirements: EU citizenship, Residence in Poland, 5+ years of experience in Python development, Experience with asynchronous programming and package design, Experience with REST/gRPC APIs, Experience with FastAPI or similar frameworks, Hands-on experience with Kubernetes, Experience with containerized deployments, Experience with CI/CD pipelines, Experience with GitHub Actions and GitLab CI, Experience with OpenTelemetry instrumentation, Ability to design containerized end-to-end test environments, Experience with Confluence and Jira, Fluent English (B2/C1) 📃 Skills: Python, FastAPI, REST, gRPC, Kubernetes, CI/CD, GitHub, GitLab, OpenTelemetry, Docker, Confluence, Jira 🏢 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 Lead Technical Tester to join Sopra Steria Polska and support a team working across data, artificial intelligence, digital innovation, and web presence. In this role, you will contribute to deliv-ering foundational components, tools, guidance, and services throughout the entire lifecycle, from design to implementation and operations. Note that we can only offer cooperation to people who are located in Poland and have EU citizenship. Responsibilities: Creating automatic and manual tests (test analysis and design + execution) Analysis of test results suggests ways to improve processes or increase productivity and quality Cooperation with developers in diagnosing and correcting errors and error reporting Running retests and regression tests (implementation and maintenance) Taking care of test documentation Leading comprehensive testing efforts across multiple software projects, ensuring that all products meet the highest standards of quality, performance, and security Manages critical test case design and reviews test plans to ensure comprehensive coverage and effectiveness. Analyses complex test results and leads troubleshooting efforts to resolve issues efficiently Continuously evaluates testing processes and implements improvements to increase efficiency, effectiveness, and scope of testing. Reports on testing progress, challenges, and outcomes to senior management, influencing decision-making regarding product quality and release readines Tech stack on the project: Python REST/gRPC APIs GitHub Actions and GitLab Confluence and Jira. Qualifications Must have requirements: 5+ years of experience in Python development, including asynchronous patterns, package design, CLI tooling, and working with REST/gRPC APIs. Experience with FastAPI or similar frameworks used for backend service testing. Hands‑on experience with containerized deployments, particularly using Kubernetes. Good understanding of CI/CD pipelines, especially with GitHub Actions and GitLab CI. Experience with OpenTelemetry instrumentation (traces, metrics, logs) implemented directly within application code. Ability to design and manage containerized end‑to‑end test environments that mirror production conditions. Experience working with Atlassian tools, such as Confluence and Jira EU citizenship Fluent English: B2/C1. Being open to occasional business trips abroad and visits in our office in Katowice Nice to have requirements: Clearance Additional Information What we offer: • BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, life insurance, workation • DEVELOPMENT OPPORTUNITIES (UoP and B2B): certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud) The recruitment process for this position consists of two stages: • a short phone call with a recruiter (30 min max) • one-hour long interview on Teams (with both general and technical questions) Salary range: UOP: 12 000-16 000 PLN gross/month. B2B: 100-140 PLN net/h All information about salary range and its additional components will be provided during the 1st stage of recruitment process. 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.
Technology
Sopra Steria
Senior Software Engineer (C++,C#)
Senior
Hybrid
Katowice, Poland
12,000 - 16,000 PLN/mo
🏢 Summary: Senior Software Engineer role focused on developing and maintaining aerospace industry applications in a multinational environment using C++, C#, and related technologies. The position involves software implementation, testing, integration, troubleshooting, and performance optimization within distributed international teams. The offer includes hybrid cooperation from Katowice, business travel opportunities, and a broad technical stack. 🗂️ Requirements: 5+ years commercial experience in senior or senior-ready role, Strong knowledge of C/C++, Strong knowledge of C#, Understanding of design patterns, Experience with testing, Experience with integration activities, Experience with troubleshooting, Experience in multinational distributed environments, Strong communication skills, EU citizenship, Fluent English B2/C1, Willingness to commute to Katowice office, Willingness for occasional business trips abroad 📃 Skills: C, C++, C#, .NET, Python, Shell, DevExpress, VisualStudio, Sqlite, Boost, Xerces, log4net 🏢 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 (C++, C#) to join Sopra Steria Polska for a client in the aerospace sector. You will work in an industrial environment and a multi-functional team divided between France, Spain, Germany, Poland and India for a major aeronautical manufacturer. The program involves 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: • Implementing solutions and delivering software. • Proposing solutions. • Creating and testing software to enhance the solution and all related modules and services. • Facilitating testing, integration, and troubleshooting activities. • Shaping and applying our software standards of clean code and performance optimization techniques. • Translate business and technical requirements into clean, efficient code Tech stack on the project: • C/C++/ C#, python/shell, devexpress, .Net, Visual Studio 2022, Sqlite. • boost, driver AIM, Marben Osiam, Marben TCE, Sqlitepp, Xerces, libRegen, IDAManager, ibgambasproto, dllAFDX, log4net, ihs_BCU. Qualifications Must have requirements: • 5+ years of commercial experience in a senior or senior-ready role. • Strong expertise in C/C++ and C#. • Good understanding of design patterns. • Experience with testing, integration, and troubleshooting activities. • Experience in working in multinational and distributed environment. • Strong communication skills to collaborate with cross-functional teams. • EU citizenship. • Fluent English: B2/C1. • Being open to occasional business trips abroad and regular visits in our office in Katowice. Additional Information 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. In case of questions, please contact the HR team. The recruitment process for this position consists of two stages: • a short phone call with a recruiter (30 min max) • one-hour long interview on Teams (with both general and technical questions) • one-hour long interview on Teams (with project representatives) Salary range: UoP: 12 000 - 16 000 PLN gross/month All information about salary range and its additional components will be provided during the 1st stage of recruitment process. 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.
Technology
Sopra Steria
Senior Software Engineer (Java + Angular)
Senior
Hybrid
Katowice, Poland
12,000 - 16,000 PLN/mo
🏢 Summary: Senior Software Engineer (Java + Angular) role focused on designing, developing and maintaining enterprise applications for a major aeronautical manufacturer within a multinational environment. The position involves full‑stack development, code quality assurance, performance optimization and collaboration across distributed teams. The offer is dedicated to EU citizens based in Poland, working in a hybrid model from Katowice. 🗂️ Requirements: 4+ years commercial experience in senior or senior-ready software engineering role, Strong experience with Java 8–21, Strong experience with Angular 1.7.5, Knowledge of Spring 5.2, Knowledge of Spring Boot 2.3, Hands-on experience with ElasticSearch 7.17–8.X, Hands-on experience with Neo4j 4.4–5.X, Proficiency with Git and GitHub, Experience with SOAP and REST web services, English B2 level or higher, EU citizenship, Residence in Poland and willingness to work from Katowice office 📃 Skills: Java, Angular, TypeScript, JavaScript, Spring, SpringBoot, Maven, ElasticSearch, Neo4j, OracleDB, PostgreSQL, Jenkins, Docker, Ansible, SonarQube, Git, GitHub, SOAP, REST 🏢 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 + Angular) 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 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 Must have requirements: 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) and Angular 1.7.5 (TypeScript, JavaScript) Knowledge of Spring 5.2 and Springboot 2.3 Hands-on knowledge of ElasticSearch 7.17- 8.X and Neo4j 4.4 – 5.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 requirements: Proficiency in French would be a strong advantage Additional Information What we offer: • BENEFITS (UoP): Luxmed, Medicover Sport, Worksmile, educational platforms, languages learning platform, referral bonus, copyrights, life insurance, workation • DEVELOPMENT OPPORTUNITIES (UoP): certifications (paid by the company), conferences, Tech Lunches, possibility to join our Communities (Project Management, Architecture, Security, Process Management, Leadership, AI and Cloud) The recruitment process for this position consists of two stages: • a short phone call with a recruiter (30 min max) • one-hour long interview on Teams (with both general and technical questions) Salary range: 12 000 – 16 000 PLN gross/month All information about salary range and its additional components will be provided during the 1st stage of recruitment process. 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.