Mid-Level Software Engineer (Desenvolvedor Full Stack Pleno) Technology & Data · Sao Paulo · in London

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 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.

Purpose of the job

As a Software Engineer, you'll be a core member of a cross-functional product squad, building new features and services as part of a modern, cloud-native platform. You'll be working with experienced engineers, Product Managers, and QAs to develop scalable, well-tested systems using a contemporary tech stack; all in a greenfield environment. This is a hands-on role, where you'll spend most of your time coding, refining technical tasks, and solving real user problems through software. You'll learn by doing, pairing with others when needed and contributing to everything from front-end interfaces to backend services and APIs.

We're big on engineering quality; this entails end-to-end CI/CD, observability, infrastructure-as-code, and automated testing are baked into how we work. You'll be encouraged to explore new ideas, use AI-powered tools where helpful, and continuously sharpen your skills as an engineer. If you're looking for a role where you can write great code, grow your experience across the stack, and ship features that matter, please apply.

Key responsibilities

• Write clean, efficient, and testable code (for both frontend and backend services), owning features and services from design to deployment.
• Work closely with your squad (PMs, engineers, QAs) to refine requirements, contribute to scoping technical solutions, and deliver great software.
• Write unit and integration tests and contribute to a robust CI/CD setup that ensures safe, reliable releases.
• Deploy and operate software in AWS using tools like Terraform, Kubernetes, and GitHub Actions.
• Take part in code reviews, retrospectives, and regular feedback sessions to improve as an engineer.
• Take responsibility for the health, performance, and maintainability of the code you ship.
• Look for opportunities to improve development workflows using AI-powered tooling and automation.
• Be 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.

Non-negotiable

• 2-4 years of experience in software development with a strong focus on TypeScript (Node.js & React) and strong knowledge of JavaScript fundamentals.
• Comfortable with basic cloud development on a Cloud platform (AWS & Azure), using CI/CD pipelines (we use GitHub Actions) and tools like Terraform.
• Familiar with writing unit tests and automated tests, and understand the importance of test coverage, maintainability, and regression safety.
• You enjoy solving engineering problems and are comfortable breaking down tasks, asking questions, and working through ambiguity.
• You're eager to learn from your teammates and grow as a full-stack engineer, actively participating in a team committed to continuous improvement.

Personal attributes

• Show initiative: self-driven, independent problem-solver who takes ownership end-to-end.
• Innately curious: constantly questioning, learning, and seeking deeper understanding.
• Innovative: think outside the box and be creative and implement ideas that enhance our systems - innovation is valued highly at Collinson.
• Communicative collaborator: share openly, work across teams, and integrate feedback.
• Strong analytical and investigative problem-solving skills.
• Hungry and eager to make a difference at a technical and operational level.
• The ability to get things done – we don't like micro-management, but we expect you to do the right thing.
• An attitude of being proud of your code and taking ownership.

Benefit plan including but not limited to:

• Medical, dental, life insurance for employees;
• Meal voucher;
• Transportation or parking voucher;
• Home office 3x a week;
• Priority Pass membership (eligible after 90-day probation period);
• Work from anywhere for 8 weeks (eligible after 90-day probation period);

Collinson is an equal opportunity employer and welcomes differences in all their forms including: colour, race, ethnicity, gender identity, sexual orientation, neurodivergence, family status, age, individuals with disabilities and people from all backgrounds, cultures and experiences as we strongly believe this contributes to our ongoing success. We are focused on continually evolving our purpose driven, high performing culture, providing an environment where our people have the opportunity to achieve their full potential and do interesting and meaningful work. Our company values are: Act smarter, Do the right thing, One team and Be insight led. These help guide everything we do internally in terms of how we think, act and interact, right through to how we deliver value to our customers and clients.

In your application, please feel free to note which pronouns you use (For example - she/her/hers, he/him/his, they/them/theirs, etc.).