About KLx
KLx is the Portuguese subsidiary of Crédit Agricole S.A., a large international banking group that provides IT Skills & Software Development services to the IT organizations within the group's business lines.
Our mission is to assist with the IT transformation & activities of a worldwide bank capitalizing on all the skills from our international campus in Lisbon.
About Responsibilities
KLx is strengthening its Payments Services team and looking for an Application Engineer Support (application integration) to support the deployment, reliability, and continuous improvement of the EPI/WERO applications across P2P, Consumers, and Acceptor domains.
You will play a key role in environment setup, integration, observability, CI/CD, incident management, and collaboration with development, production, and business teams.
This is a hands-on, high-impact role on real-time, 24/7 critical payment applications.
Key Responsibilities:
1. Application Integration & Environment Setup
Support Application Owners (EPI/WERO) in building and evolving environments
Define technical requirements for resilience, observability, and operability
Integrate software components delivered by CAPS development teams (Shell scripts, Ansible, Jenkins jobs)
Support QA teams (CQF) during testing phases
Work with CAGIP for deployments in pre-production and production
2. Reliability & Service Quality
Implement CI/CD and DevOps practices on a real-time, high-availability application
Perform operational maintenance (obsolescence, cold fixes, technical configuration)
Provide application expertise to assess impacts, specify solutions, and test fixes
Ensure alignment with roadmaps and long-term technical strategy
3. Incident & Problem Management (Level 3)
Act as L3 support for technical incidents (including hot fixes)
Participate in crisis cells, incident committees, and problem reviews
Contribute to on-call rotations (1 week every 4 weeks)
Set up technical alerts to detect service-impacting issues
4. Cross-Team Collaboration
- Collaborate closely with Development, Payment Keys, Group Infrastructure Platform, SDM, Application Owners, and Business teams.
Who You Are
At least 3 years of experience in application integration or advanced L3 application support.
Strong hands-on skills with Linux, Kubernetes, and CI/CD pipelines (GitLab, Jenkins, ArgoCD).
Good knowledge of PostgreSQL, MongoDB, and scripting (Shell, Ansible).
Experience supporting real-time, 24/7 critical applications with strong incident analysis (L3/RCA).
Solid understanding of technical & functional architecture and modern observability tools (Dynatrace).
Experience with API testing tools (Postman, Bruno) and security mechanisms (RSA, HMAC, mTLS) is a plus.
Exposure to the payments ecosystem is appreciated.
Comfortable communicating in French (B1) and English (B1).
What We Offer
Competitive Salary + Bonus + Flex Benefits + Health Insurance
Hybrid working model, allowing you to combine onsite and offsite work
Open Space with a lovely location next to Tejo, 5 minutes' walk from Metro and Train Station, 15 minutes' drive from Humberto Delgado's airport
Canteen facilities (Breakfast + Lunch)
Parking upon request (option to charge electrical cars)
Free coffee, hot chocolate, fruits
Training (Hard and Soft Skills)
International environment with more than 15 nationalities
A people oriented and friendly working environment