DevOps - Principal

Worldline; Stockholms kommun; On-site; SEK 900,000 - 1,200,000; Full time

Benefits offered by this job

Annual leave 30 days

Private medical insurance

Flexible benefits

Training & development

Job summary

Worldline Sweden is building an internal engineering platform to empower product teams with self-service tooling for real-time authorization services. You will design and run scalable systems, focusing on security, governance, and observability while working in a domain-driven team.

We seek developers with 5+ years in software, strong Python/Go and AWS experience, and a passion for mentoring others. Fluency in English and/or Swedish is required, with a valid Swedish work permit.

Qualifications

• 5+ years of hands-on software development with production Python.
• Strong knowledge of SSO, authentication and access control.
• Proficiency in Python and Go and REST APIs/HTTP(S).
• Extensive AWS experience and cloud-native networking concepts.
• IaC with Terraform and/or CloudFormation.
• CI/CD experience with Jenkins and Docker; AWS ECS preferred.
• Degree in Computer Science, Engineering, or related field.
• Fluent in English and/or Swedish with Swedish work permit.
• Bonus: React experience; autonomous team player.

Responsibilities

• Build and run the platform enabling developers to create, test, launch and monitor real-time auth services.
• Design and deliver an internal platform offering self-service access to tools.
• Reduce non-development overhead and cross-team delays.
• Lower cognitive load for security, governance and compliance.
• Ensure outcomes are observable and tied to business metrics.
• Work in a domain-driven team and participate in on-call rotation.
• Mentor and collaborate across teams to scale operations.

Skills

5+ years hands-on software development

Production Python

SSO authentication access control

Python

Go

REST APIs/HTTP(S)

NGINX

AWS

CI/CD

Jenkins

Docker

AWS ECS

Computer Science degree

English and/or Swedish

Education

Degree in Computer Science or related

Tools

Git

Flask

OAuth 2.0

OpenID Connect

Terraform

CloudFormation

AWS IAM

Job description

Worldline helps businesses of all shapes and sizes to accelerate their growth journey - quickly, simply, and securely. We are the innovators at the heart of the payments technology industry, shaping how the world pays and gets paid. Our technology powers the growth of millions of businesses across 5 continents. And just as we help our customers accelerate their business, we are committed to helping our people accelerate their careers. Together, we shape the evolution.

The opportunity

Every day, our cloud-native acquiring platform processes billions of card transactions - authorization, clearing, and settlement - for customers who trust us to get it right, every time.We're building an internal Engineering Platform that lets our product teams move fast without reinventing infrastructure each time. You'll join the Platform Engineering team to design self-service tooling that developers actually want to use: fewer tickets, fewer handoffs, less time fighting security and compliance, more time shipping.If you like building the systems other engineers build on top of, read on.

Day-to-day responsibilities

You'll help build and run the platform that lets developers independently create, test, launch, and monitor our real-time authorization services. Concretely, that means designing and delivering an internal platform that:

• Gives development teams seamless, self-service access to the tools they need
• Cuts non-development overhead and cross-team delays
• Reduces the cognitive load of security, governance, and compliance
• Ties success to clear, observable business outcomes

You'll work in a focused, domain-driven team and take part in an on-call rotation. Your work directly enables internal teams to innovate and operate at scale.

Who are we looking for

We look for big thinkers. People who can drive positive change, step up and show what's next - people with passion, can-do attitude and a hunger to learn and grow. In practice this means:

• 5+ years hands-on software development, with strong production Python experience. Comfortable with Git.
• Solid grasp of SSO, authentication, and access control - with exposure to AWS Cognito, Flask, OAuth 2.0, and OpenID Connect.
• Strong in Python and Go, with deep knowledge of REST APIs and HTTP(S), including managing proxies and requests with NGINX.
• Extensive AWS experience - ELB, Route 53, Lambda, IAM, DynamoDB, S3, RDS - plus cloud-native networking: VPCs, subnets, peering, transit gateways, service meshes, NATs, and firewalls.
• Experience with AWS multi-account strategies and automating account provisioning through Infrastructure as Code (Terraform, CloudFormation).
• Practical CI/CD experience with Jenkins and Docker, ideally on AWS ECS.
• A degree in Computer Science, Engineering, or similar.
• Fluent in English and/or Swedish, with a valid Swedish work permit.
• Bonus: some React experience.
• Care about giving teams autonomy - so features ship faster and production issues get resolved quicker
• Are a self-starter who's also a genuine team player: accountable, dependable, and good at working across groups
• Communicate clearly and build strong working relationships
• Stay comfortable with ambiguity and bring a learning mindset
• Enjoy mentoring other engineers

Nice to have

• Hands-on DevOps culture: automation, lean processes, metrics, and resilience
• AWS Certified Solutions Architect - Professional (or equivalent expertise)
• Experience applying AI-driven approaches to operations and tooling, and scaling them
• Public code, writing, or projects that show your work
• Experience building secure and/or PCI-DSS certified solutions

#LI-AO1

• 30 days' annual leave
• Private medical insurance
• Flexible benefits scheme with discounted products and services
• Comprehensive training and development programs - we're serious about growing your career

Shape the evolution

We are on an exciting journey towards the next frontiers of payments technology, and we look for big thinkers, people with passion, can-do attitude and a hunger to learn and grow. Here you'll work with ambitious colleagues from around the world, take on unique challenges as a team, and make a real impact on the society. With an empowering culture, strong technology and extensive training opportunities, we help you accelerate your career - wherever you decide to go. Join our global team of 18,000 innovators and shape a tomorrow that is yours to own.

Learn more about life at Worldline at jobs.worldline.com

We are proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any applicable legally protected characteristics.