Senior Fullstack Engineer (Ingeniero/a de Software Fullstack Senior) - Remote

The company is the leading platform in Latin America for companies to execute and manage every payment operation. More than 50,000 leading and fast-growing businesses run on our corporate cards, bill pay, financing and B2B payments, and in 2025 the Financial Times named the company the region’s fastest-growing company. We’re passionate about helping every company we work with become more effective—and, through that, raising the region’s competitiveness. We’re ~400 people, backed by Notable Capital, Coatue, Kaszek, monashees, DST Global, ICONIQ, General Catalyst and Goldman Sachs, among others.

Senior Fullstack Engineer — Onboarding

We're looking for a Senior Fullstack Engineer to join the company's Onboarding team — the team behind one of the most critical moments in the company journey: the moment a business decides to trust us. We own the full experience from sign-up to first transaction: KYB and KYC flows, document collection and verification, identity validation, and account activation. The complexity is real — we operate across multiple countries each with its own regulatory framework, and we manage a growing ecosystem of identity and verification providers, each with different APIs, contracts, and data models, that we have to orchestrate seamlessly. Every percentage point of activation we unlock translates directly to the company's expansion across Latin America.

The role is genuinely fullstack and tends to be backend-heavy — integrations, verification orchestration, data flows — so a backend engineer eager to expand their frontend work will feel right at home. A strong frontend engineer hungry to go deeper on the backend is equally welcome. Either way, you'll own features end to end and work in an environment where AI is central to how we build — from automating manual review steps to accelerating how we expand into new markets.

We move fast and trust our engineers to own outcomes end-to-end. That means autonomy to make decisions, proactivity to surface problems before they become blockers, and the attitude to push initiatives across the finish line without waiting to be told what to do.

Your responsibilities will include

• Designing and building backend services that power the onboarding engine: sign-up, KYB/KYC flows, document collection, verification orchestration, and account activation.

• Contributing to the frontend: building intuitive, responsive interfaces that reduce friction at a high-stakes moment for the customer — and that make a complex compliance process feel simple.

• Owning integrations with external providers — identity verification, document validation, business data sources — abstracting their complexity behind clean, resilient internal APIs.

• Collaborating cross-functionally with Product, Design, Risk, and Compliance to translate regulatory requirements and activation goals into great product experiences.

• Applying AI tools to ship faster and improve how the team works

• Elevating the team through code reviews, pairing, and sharing what you know with peers

Who you are

• 5+ years of software engineering experience with solid execution in production environments.

• Strong foundation in Java and the Spring ecosystem — Spring, Spring Boot, Spring Batch — for building robust backend services, with genuine appetite to go deeper on the frontend (React) too. A strong React engineer hungry to own the backend is equally welcome.

• Comfortable architecting scalable, distributed systems and microservices that hold up under the demands of core financial products.

• Solid data modeling instincts, with hands-on experience running PostgreSQL and Redis for both transactional and caching needs.

• Experience building and securing RESTful APIs and integrations with third-party providers — comfortable with async and event-driven patterns (Kafka), error handling, and the messiness of external dependencies.

• Familiarity with cloud platforms, preferably AWS, and modern dev tooling.

• A track record of mentoring engineers and raising the bar on best practices and quality — through code reviews, pairing, and sharing what you know.

• English proficiency, with the ability to lead technical discussions across geographies and turn business goals into technical solutions that actually land.

• High autonomy and ownership, plus an AI-native approach: you use AI tools actively in your daily work — coding, debugging, automation — and keep pushing further.

We've kept this list short on purpose — these are the things that actually matter. If you check most of these and the rest you'd close with curiosity and the right tools, we want to hear from you.

Where we work

This is a remote-first role: you'll work from home day to day. You'll ramp up in person with the team, and come together in person for team moments, events and customer visits through the year.

Why the company

• A high talent-density team driven to make an impact in Latin America — low ego, high ownership.

• Competitive salary and stock options (ESOP) from day one.

• An annual learning budget and accelerated development paths.

• English is our working language, with Spanish and Portuguese every day.

How we work

• Clarity — Open and direct communication: we say what we mean and give context where it matters.

• Simplicity — If it can be simpler, it should be.

• Ownership — We own everything we do, end to end. When something needs to happen, we don't wait.

• Pride — We hold ourselves to a high standard, and it shows in what we deliver.

• ABC (Always Be Changing) — We adapt fast, embrace change, and keep learning.

• Inclusivity — Diverse ideas, stories and perspectives build a better the company.

If you meet the must-haves, apply — the nice-to-haves are a bonus, not a requirement.