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22 October 2025

Sr. Full-Stack Engineer ​

About Credix

Credix is a FinTech company dedicated to growing businesses in Latin America. Building on our expertise, we now focus on providing a tailored Buy Now, Pay Later (BNPL) solution for B2B transactions in Brazil with our platform, CrediPay. CrediPay is created to help business grow their sales and improve their cashflow efficiency through seamless and risk-free credit offering. Sellers offer their buyers flexible payment terms at an attractive price point and receive upfront payments. We manage and protect our clients from any credit & fraud risk, letting them focus only on what matters: increased sales and profitability.

Learn more about our team, culture, and vision on our company page.

Why choose Credix?

Become part of a forward-thinking start-up where boldness and a commitment to excellence are paramount, and your personal and professional development is at the forefront.

Work alongside a dedicated team of bright individuals driven by an Olympian mindset to excel in every aspect of our operations. Together, we aim to build with velocity, utilizing innovative embedded finance strategies to expand business operations in Latin America.

Experience a close and supportive work atmosphere where collaboration thrives, wise judgment guides our decisions, and where you have the opportunity to learn, grow, and take on meaningful responsibilities.

About the job

We are looking for someone to join the Credix Engineering team. We seek a Senior Full-Stack Engineer with experience in NodeJS, Typescript, JavaScript, and Python. You love to tackle big problems, break them down into smaller pieces, and translate those into code. You are structured at heart, leading to excellent documentation, code maintainability, and structure.

Qualifications

Five years of expertise in building production-grade software platforms.

Proficient in NodeJS, TypeScript, and JavaScript.

Experience in Nest.Js is a big plus

Solid understanding of Python.

Fluent in English and Portuguese, both written and verbal.

Experience with frontend frameworks such as Next.js and React.

Familiar with NoSQL & key/value databases like LevelDB, MongoDB, Redis, etc.

Proven track record in developing scalable, RESTful HTTP APIs.

Hands-on experience with Docker and its ecosystem.

Experience with CI/CD pipelines.

Knowledge of Terraform and Google Cloud Platform is a plus.

Strong analytical mindset combined with outstanding interpersonal and communication skills.

Core Responsibilities

Help build the core CrediPay platform, ranging from functionalities to processing payments to implementing novel ways of onboarding buyers.

Contribute to developing our risk engine, laying the foundation to underwrite new buyers contextually.

Contribute to the quality of our codebase, not only by coding, but also by reviewing your peer’s code & keeping a close eye on quality and automated testing.

What we offer

We believe that collaboration and team spirit thrive best in an in-office environment. Our office provides a vibrant and engaging workspace where team members can connect, innovate, and grow together. With access to our offices in Sao Paulo or Antwerp, you’ll immerse yourself in a culture of innovation and collaboration.

But that’s just the beginning – here’s what else we offer:

A culture of learning and experimentation: where you are encouraged to explore new ideas and technologies

Competitive salary package: Your hard work deserves recognition, and we ensure you’re well-rewarded for your contributions.

Equity stock options plan: Be a part of our journey towards success and share in the rewards.

Paid holidays: Enjoy the flexibility to recharge and rejuvenate

Bi-annual off-site: Awesome team building, unforgettable memories, and adventures ensured during our team off-sites.

How to apply

Timeline

We expect to reply to you within ~1 week of you submitting the application form if we are interested in setting up a call.

While we’re reviewing every application carefully, we may not be able to respond to everyone personally. Rest assured that it’s not because we don’t value your interest – it’s simply a result of our team being stretched thin as we work hard to bring our vision to life.

Employment Type
On-site

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