Frontend Engineer IC2

About Addi

We are a leading financial platform, building the future of payments, shopping, and banking—a world where consumers and merchants can transact effortlessly and grow together. Today, we serve over 3.6 million customers and partner with more than 55,000 merchants, making Addi Colombia’s fastest-growing marketplace. With a state-of-the-art, technology-first approach, we provide banking solutions (deposits, payments, unsecured credit) and commerce services (e-commerce, marketing), bridging the financial gap for millions and redefining how people experience financial freedom. As the country’s leading Buy Now, Pay Later provider, we have secured regulatory approval to operate as a bank, unlocking even greater opportunities for our customers. In the past year, we have also achieved profitability, reinforcing the strength of our business model and our ability to scale sustainably. Our mission has earned the trust of world-class investors, including Andreessen Horowitz, Architect Capital, GIC, Goldman Sachs, Greycroft, Monashees, Notable Capital, Quona Capital, Union Square Ventures, Victory Park Capital, and more, who back our vision for the future. With their support, we are not just growing—we are transforming Latin America’s financial ecosystem and shaping the next generation to shop, pay, and bank in Colombia. But what truly sets us apart is how we build. We are a conscious company, driven by deep experience in scaling technology, services and products, and we live by our values every day.

About the Role

This is where you come in. Below, you’ll find what this role is all about—the impact you’ll drive, the challenges you’ll tackle, and what it takes to thrive at Addi. If you’re ready to be part of something big, keep reading.

What we’re looking for

Technical Expertise

Experience building user interfaces using well-structured HTML, CSS, and modern JavaScript frameworks, specifically React JS and React Native.

Experience in developing components with Typescript.

Proven ability to build, develop, and maintain unit, component, and end-to-end tests to ensure feature reliability.

UX/UI Design Foundations: Good understanding of UX/UI design principles like user centered design, responsive design, consistency, simplicity, etc.

Familiarity with integrating AI/ML APIs (e.g., OpenAI, LLMs, recommendation engines) into frontend applications. Understanding of how to consume and optimize AI-driven features within modern JS frameworks (React, Vue, etc.).

Strong grasp of frontend architecture patterns (component-driven design, micro-frontends, state management at scale). Deep knowledge of performance optimization, code splitting, and building maintainable, scalable codebases.

Curiosity and Continuous Learning Mindset

Strong desire to learn and stay updated with new technologies, tools, and best practices.

Active participation in self-learning and problem-solving on their own.

Interest in exploring new approaches or techniques, especially in a dynamic environment.

Demonstrates exceptional initiative

Takes responsibility for delivering impactful projects end-to-end, from conception to post-deployment support.

Deliver high-quality, creative solutions at lightning speed.

Anticipated technical challenges and proposed effective solutions

Effective Communication

Ability to communicate technical ideas clearly to both technical and non-technical team members.

Strong listening skills to understand the needs and requirements of other teams, such as product or UX.

Adaptability and resilience in a dynamic startup-product environments :