Lead Site Reliability Engineer

Introducing Masabi 

// At Masabi, we're driving the fare payment revolution, powering the journeys of millions all over the world. We build fare collection platforms that allow riders to seamlessly buy and present tickets for public transport either on their mobile phones, from a ticket machine, or even by tapping their bank card to travel. 

Our Justride platform is used in over 250 locations globally, including some of the largest cities in the world. With our industry-first mobile ticketing SDK, we've partnered with large players in the transport space, including Uber, Moovit and Transit. 

Your own journey is important to us too. Choosing a role here means joining a network of innovators from all walks of life; a group of passionate individuals who consistently deliver. Here, you'll find the tools you need to build the career you want. Whether you're taking the direct route or trying a new path, we'll support you no matter what. 

The Role_
// We're looking for a Lead Site Reliability Engineer to join our platform team, someone who's confident working hands-on with infrastructure, but also ready to shape how we scale and operate as a global team.

You'll take ownership of key systems, lead cross-functional work, and help evolve the way we build for performance, reliability, and security. This role is ideal for those who enjoy solving complex problems, improving systems through automation, and supporting others as they grow. It's a chance to have both technical depth and meaningful influence, while staying close to the work that matters.

Location_
This role is available in a remote model to candidates based in Colombia.

What You'll Be Doing_

Build and automate reliable systems

• Lead design discussions and make key architectural decisions for reliability, scalability, and performance.

• Establish SRE standards and best practices (IaC patterns, CI/CD maturity, observability, etc.) across teams.

• Design and manage infrastructure using Terraform and CloudFormation

• Build and evolve CI/CD pipelines that support fast, safe, and frequent deployments

• Automate manual tasks to reduce operational load and enable faster delivery

• Help expand our infrastructure globally, scaling up new environments with care
  

Improve visibility, scale and performance

• Define and maintain SLIs, SLOs, and alerting strategies aligned with user experience

• Implement monitoring solutions that give us clear, early signals during incidents

• Lead capacity planning and performance tuning as our systems and teams grow

• Identify opportunities to improve architecture for resilience and cost-effectiveness
  

Own reliability and incident response

• Lead or contribute to incident response, root cause analysis, and post-incident reviews

• Design and maintain disaster recovery and failover strategies

• Partner with compliance and security teams to meet frameworks like SOC 2 and PCI
  

Support others and share your knowledge

• Collaborate with engineers, architects, and product teams to embed SRE practices from the start and define long-term platform reliability strategy

• Mentor others in areas like observability, incident readiness, and infrastructure-as-code

• Document systems and processes clearly to support learning and long-term success

• Partake of the on-call rotation, shared with the team and paid on top of salary
  

About You_

// You're an experienced SRE who combines technical depth with curiosity, care, and a desire to make things better for the platform, the team, and the people using our systems.

• You've worked in SRE, platform, or DevOps roles where reliability was business-critical (24/7)

• You have proven experience designing and evolving production-grade systems for scale and resilience.

• You're comfortable designing and operating in AWS, with strong knowledge of cloud architecture, networking and security (VPC design, IAM, least privilege)

• You have hands-on experience with Terraform, infrastructure automation, and CI/CD systems

• You've led or contributed to high-impact projects involving observability, performance, incident command and/or reliability (distributed tracing, log correlation, metrics maturity, etc)

• You communicate clearly and drive cross-functional reliability improvements in distributed, async-first teams

• You enjoy helping others grow and value a kind, collaborative engineering culture

• You take pride in doing things the right way, but you're pragmatic and focused on impact
  

Nice To Have_

• Familiarity with PCI DSS v4 or similar compliance standards

• Experience with container orchestration

• AWS certifications
  

Our Tech Stack_

// Our platform is JVM-based and cloud-native, running on AWS. The SRE team works across both modern infrastructure and legacy systems as we continue to scale globally.

We use a range of proven tools to support performance, reliability, and speed of delivery:

• Monitoring & Observability: Grafana, Prometheus, CloudWatch, Pingdom, Kibana

• Infrastructure as Code: Terraform, CloudFormation

• CI/CD & Automation: GitLab CI, Rundeck

• Configuration Management & Logging: Puppet, Confluent Cloud

Careers at Masabi are for people going places - driven by a mission to make transit fair and accessible for all.

We are a network of innovators from all walks of life, passionate about making a difference. At Masabi, we operate with openness and trust, creating an environment where everyone feels empowered to bring their whole, authentic selves to work.

Whoever you are, just be yourself.
We welcome applications from underrepresented backgrounds and encourage you to share your pronouns at any stage. Together, we simplify journeys, remove barriers, and improve daily life for millions.

Why Join Masabi?

• Driven by Purpose – We believe in journeys made simple. The work isn't always easy, but the best things never are.

• Encouraged to Accelerate – Masabi is going places and our people are in the driving seat. Whether you're taking the direct route or exploring new paths, we support your journey.

• Advancing with Empathy – We put people first and foster a culture of learning, not blame. No matter your cargo, we share the load.
  

We're already powering journeys - are you ready to join us?

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