Senior Python developer on a financial-sector project modernising legacy applications with AI-driven code migration. Day to day: build agentic AI/LLM workflows and automation tooling, integrate with CI/CD (Tekton, ArgoCD, Ansible) and containers (Docker, Kubernetes). Hybrid from Gdynia/Gdańsk/Warszawa offices, B2B 1000–1200 PLN/day.
Compensation
PLN 1K–PLN 1.2K / day
Location
Poland
Work setup
Hybrid
Seniority
Senior
Employment
Not specified
Experience
15+ years
Category
Software engineering
Posted
Skills
agentic-ai
ai
ansible
argocd
automation
ci-cd
claude-code
containerization
docker
git
gitops
infrastructure-as-code
java
kubernetes
llm
macos
mcp
prompt-engineering
python
spring
Must have
Strong programming skills in Python
Solid understanding of software engineering principles, including Git, code review, testing and clean code
Practical knowledge of CI/CD and containerisation, with Docker and Kubernetes
Hands-on experience with or strong interest in LLMs, prompt engineering and AI-assisted development
Understanding of agentic AI concepts, including agents, tool use and agent workflows
Ability to read and understand code written in different programming languages, including legacy technologies such as Java
Experience with CI/CD and GitOps tools such as Tekton or ArgoCD
Knowledge of Ansible or other Infrastructure as Code tools
Strong analytical and problem-solving skills, with a structured approach to experimentation
Good communication skills in English and ability to work effectively in a collaborative team
Nice to have
Familiarity with agentic coding tools such as Claude Code or similar solutions
Knowledge of LLM evaluation, context engineering or Model Context Protocol (MCP)
Experience with legacy modernisation, code migration or large-scale refactoring
Familiarity with Java/Spring, frontend technologies or other modern target stacks
Experience working in enterprise or regulated environments, preferably banking
Full description
Work model: hybrid from Gdynia / Gdańsk / Warszawa (2/3 days per week from the office)
Why choose this offer?
You can expect a flexible work organization
The international work environment will give you the opportunity to interact with the English language on a daily basis
Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit)
The Jit community will bring you a nice time during regular integration meetings
Project
You will be involved in a financial project focused on modernising legacy applications through AI-driven code migration and automation. The project aims to analyse existing codebases and transform them into modern, platform-approved technology stacks using agentic AI workflows, while integrating the process with CI/CD and deployment platforms.
Responsibilities you’ll have
Design, develop and improve AI-powered agent workflows for legacy code modernisation
Build and maintain tooling for automated code analysis, migration and refactoring
Develop solutions in Python following clean, maintainable software engineering practices
Integrate AI-driven workflows with CI/CD and deployment platforms such as Tekton, ArgoCD and Ansible
Work with LLMs, prompting, agentic coding tools and tool-use workflows
Analyse legacy codebases and help transform them into modern, platform-approved technology stacks
Collaborate with application teams to turn real migration cases into reliable and repeatable automation
Experiment with different LLM providers, models and approaches in a vendor-agnostic environment
Contribute to testing, evaluation and continuous improvement of AI-generated migrations
Work with containerised environments using Docker and Kubernetes
Expected competences and knowledge
Strong programming skills in Python
Solid understanding of software engineering principles, including Git, code review, testing and clean code
Practical knowledge of CI/CD and containerisation, with Docker and Kubernetes
Hands-on experience with or strong interest in LLMs, prompt engineering and AI-assisted development
Understanding of agentic AI concepts, including agents, tool use and agent workflows
Ability to read and understand code written in different programming languages, including legacy technologies such as Java
Senior Python Developer Gdańsk, Gdynia, Warszawa B2B 1 000 – 1 200 PLN/day at Jit (Poland) — aijobsearch
Experience with CI/CD and GitOps tools such as Tekton or ArgoCD
Knowledge of Ansible or other Infrastructure as Code tools
Familiarity with agentic coding tools such as Claude Code or similar solutions
Knowledge of LLM evaluation, context engineering or Model Context Protocol (MCP)
Experience with legacy modernisation, code migration or large-scale refactoring is a strong advantage
Familiarity with Java/Spring, frontend technologies or other modern target stacks is a plus
Experience working in enterprise or regulated environments, preferably banking
Strong analytical and problem-solving skills, with a structured approach to experimentation
Good communication skills in English and ability to work effectively in a collaborative team
Technologies you’ll work with
Python
LLMs
MCP
Tekton
ArgoCD
Ansible
Docker
Git
Java
Spring
Client – why choose this particular client from the Jit portfolio?
Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client’s premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer’s work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.
About Jit TeamThe Human Factor of IT – it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.
Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.
Here’s how we get from first "hello" to "welcome aboard"
You’ll meet with our HR team to discuss your experience, approach to software development, and teamwork. We’ll also verify your English language proficiency as part of the conversation. Then, you’ll take part in atechnical interview focused on your skills and problem-solving mindset.
We believe agreat workplace is more than aset of benefits. It’s about trust, long-term relationships, and an environment where people can do their best work.
Share and gain experience. Jit Academy is aplatform serving amutual knowledge exchange. Lecture others and share your expertise or join the audience.
Jit Communities
Join the group of experts. We ensure constant growth, that’s why we keep building communities dedicated to mutual education.
Growth support
We value people who are looking to develop their skillset. We proudly finance avariety of courses and certifications so that you can gain new competencies.
Jit Summer Office
Gain access to the office located at the very beach in Chałupy. Jit Trailer awaits visits of the team members and their families.
Jit Boats
Cruise the bay thanks to the motorboat awaiting at the Yacht Park in Gdynia. Furthermore, there is afleet of jet skis and kites located at the beach in Chałupy.
Would you recommend any IT specialist we could hire? Share the contact and gain abonus if we hire them.
Start the day without haste. At Jit, we begin and finish the day of work within acertain time frame, in stead of fixed hours.
Bonuses for content creators
We provide bonuses to those willing to participate in industry events as public speakers, and to content creators writing articles for our blog.
Mental health support
Mental health is fundamental. Take advantage of psychologists and psychotherapists’ support and reach for psychoeducational content on the wellbeing platform
We provide our teams with high-quality gear necessary to work. Choose between MacOs or Windows and work the way you prefer.
Teambuilding events
Meet new, interesting people. We’re dedicated to building human relations and often host informal events that bound our team members.
Classes conducted for small groups, lectured by our teachers, guarantee rapid results.
Take care of your wellbeing. Members of Jit Team, gain access to awide range of medical plans provided by Medicover or PZU.
We provide Multisport and Medicover Sport gym cards so that you can improve your physical condition.
Life insurance
Increase your safety. No matter the form of employment, we provide life insurance plans to our colleagues.
Haven’t found asuitable job description, but you still wanna be apart of The Team?
Let’s talk – your next role might not be listed yet.