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Senior Software Engineer (Python+JavaScript)

SopraSteria1

Gdańsk, , Poland Hybrid permanent

Posted: April 3, 2026

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Quick Summary

We are seeking a Senior Software Engineer with expertise in Python and JavaScript to join our team in Katowice, Poland.

Job 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.

We are looking for Senior Software Engineer (Python + JavaScript) to join Sopra Steria Polska a team that works for a client in the aerospace sector.  You will work in an industrial, stable environment in multinational team (France, Poland, India) for a major aeronautical manufacturer. The program involves wide portfolio of applications developed by multiple teams in modern technologies, that e.g., support pilots, crew, and airline in planning the flights or various airport operations. 

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

Responsibilities:​

• Implement solutions and deliver high quality software in aviation domain.

• Help to define requirements and implement software designs.

• Drive software quality and innovation with the ArcGIS framework.

• Shape and apply our software standards of clean. 

Tech stack on the project:​

• Python, ArcGIS, JavaScript, AWS, GitLab, GitLab-CI, Vue.js.

Must have requirements:​

• Minimum of 5 years of experience as Senior SE or similar role.

• Software Engineering experience with Python (ArcGIS) and JavaScript (Vue.js).

• Experience in Application Lifecycle Management tools (e.g.: JIRA) 

• Team player, problem-solver, and comfortable interacting with stakeholders.

• EU citizenship.

• Fluent English: B2/C1

• Being open to occasional business trips abroad and visits in our office in Gdańsk.

Nice to have requirements:

• Experience working in an Agile/Scrum development process

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 three 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/h net + vat.

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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