Sr. Software Engineer; Desenvolvedor Full Stack Senior Technology & Data · Sao Paulo

Collinson is a global loyalty and benefits company.

We use our expertise and products to craft customer experiences which enable some of the world’s best-known brands to acquire, engage and retain the most demanding and choice-rich customers. Our unique expertise and insight into high earning, frequent travellers allow us to create products and solutions for our clients that inspire greater customer engagement to drive more profitable relationships, enrich their travel experiences, protect what matters and assist in in times of need.

While specialising in Financial Services, Travel and Retail, we also support clients in multiple sectors. We have worked with over 90 airlines, 20 hotel groups and more than 600 financial institutions and banks, with clients including Accor Hotels, Air France KLM, American Express, British Airways, Cathay Pacific, Diners Club, Mandarin Oriental, Mastercard, Radisson Hotel Group, Sephora, Visa and Vhi.

We take our 30 years’ experience working with these kinds of household names in over 170 countries and help our clients to deliver the smarter experiences it takes to differentiate their propositions and help them win deeper devotion with their customers.

Collinson is a privately-owned entrepreneurial business with 2,000 passionate people working in 20 locations worldwide. Our solutions include Priority Pass, the world’s best known airport experiences programme, while we are also the trusted partner behind many of the leading financial services, airline and hotel brand’s reward programmes and loyalty initiatives.

As a Senior Software Engineer, you’ll be a key figure in one of our cross-functional teams, designing and building cloud-native, greenfield products from the ground up. You’ll take ownership of features and new capabilities, working closely with a Product Manager, Engineering Manager, and your teammates to deliver high-quality software that is reliable, scalable, and secure.

You’ll be hands‑on every day; refining stories, writing code, reviewing pull requests, and solving interesting technical problems. You’ll bring strong engineering practices to the team and help shape the way we build software. While you’re not expected to manage people, your technical depth and experience mean you’ll naturally become a point of reference for others on the team.

We have a modern Type Script stack, cloud‑native environment, containerised deployments, and a strong focus on automation, observability, and AI‑enhanced development.

If you enjoy solving complex problems, delivering high‑impact features, and being part of a high‑trust, high‑autonomy engineering culture, we'd love to have you onboard.

• Write clean, efficient, and testable code, owning complex features and services from design to deployment.
• Work closely with your squad (PMs, engineers, QAs) to refine requirements, scope technical solutions, and deliver great software.
• Champion automated testing and CI/CD. You’ll write unit, integration, and contract tests, and help make our systems robust and reliable.
• Build, deploy, and monitor services in AWS using tools like Terraform, Kubernetes, and Git Hub Actions.
• Take responsibility for the health, performance, and maintainability of the code you ship.
• Help evolve our engineering standards and practices by sharing knowledge, reviewing code, and learning from incidents.
• Champion observability. You’ll be using Data Dog to monitor services and debug production issues.
• Being a mentor and teacher to less experienced engineers.
• Develop in an Agile environment using tools like Git, Jira, and Confluence, with a mindset of collaboration and continuous improvement.

• 5+ years of experience in software development with a strong focus on Type Script (Node.js & React) and excellent knowledge of JavaScript fundamentals.
• Experience building and running production systems in AWS using tools like EKS, Lambda, RDS.
• Skilled in designing and building Graph
  
  QL and RESTful APIs, with practical knowledge ofMongo
  
  DB, Postgre
  
  SQL, and Kafka.
• Comfortable developing software within an event‑driven architecture.
• Deep knowledge of writing automated tests with Jest, Pact, and…