Software Engineer - Frontend

Tensec; São Paulo; On-site; BRL 150,000 - 230,000; Full time

Job summary

tensec is seeking an experienced Frontend Engineer to build our neobank experience and global transaction banking solutions. You will shape product architecture, drive frontend excellence, and work across time zones in a hybrid São Paulo hub.

You will craft fast, secure, and well-tested frontend code, collaborate with backend and product teams, and help establish best practices for deployment, monitoring, and performance. This role combines technical impact with startup-scale ownership.

Qualifications

• 5+ years of frontend development experience
• Expertise in modern JavaScript (ES6+), HTML5, CSS3, and preprocessors
• Experience with Next.js or similar frameworks a plus
• Experience with RESTful APIs and connecting frontend to backend services
• Familiarity with cloud services, DevOps practices, CI/CD pipelines, and monitoring

Responsibilities

• Set the foundation of our frontend application with speed, scalability, and a great UX
• Develop secure, clean, well-tested, and well-documented code
• Establish best practices for development, testing, deployment, and monitoring
• Contribute to architecture and product discussions for frontend considerations
• Rapidly prototype while ensuring long-term scalability and maintainability
• Monitor and resolve issues to keep the application secure and reliable
• Collaborate across teams to translate vision into a tangible product
• Coordinate with teams across time zones and regions
• Participate in startup activities from strategy to hands-on implementation

Skills

Frontend development

JavaScript (ES6+)

HTML/CSS

Sass/LESS

Next.js

REST APIs

CI/CD

Cloud services

Problem-solving

Entrepreneurial mindset

User-centric design

Tools

Git

CI/CD tooling

Monitoring tools

Job description

Tensec is looking for an experienced Frontend Engineer to build our neobank experience that empowers our customers with global transaction banking solutions. As a part of the team, you will not only be a team member but also a cornerstone of our company. You'll have a direct hand in shaping the trajectory of our startup, building the product from the ground up, and setting the technical direction for our future. This role is for those driven by the thrill of creating something new, the excitement of uncertainty, and the ambition to redefine an industry.

About the role

Location: Sao Paulo, Brazil

Positions in our hubs are hybrid and include core working days of Tuesday, Wednesday, and Thursday in the office. We provide flexible work options based on distance from our hubs. Tensec believes in the power of face‑to‑face, personal connection. As a result, we prioritize in‑person candidates.

As a frontend engineer, you would expect to:

• Set the foundation of our frontend application with the maximum speed, scalability, and the best user experience.

• Develop secure, clean, reliable, thoroughly tested, and well‑documented codes.

• Establish and uphold best practices and strategies regarding application development from scratch, including testing, deployment, and monitoring.

• Contribute to architecture and product development discussions, advocating for front‑end technology considerations.

• Rapidly develop prototypes while maintaining a focus on long‑term scalability and maintainability.

• Proactively monitor, identify, and resolve issues in our product environment to ensure our application runs securely and reliably.

• Collaborate closely with everyone to translate our vision into a tangible product.

• Work with people across time zones and regions effectively.

• Participate in all aspects of startup life, from strategy discussions to project planning to hands‑on implementation.

To thrive in this role, you have:

• 5+ years of experience in Frontend development, with hands‑on expertise.

• Expertise in modern JavaScript (ES6+), HTML5, CSS3, and pre‑processing platforms (such as Sass or LESS).

• Proven experience with popular frameworks; Next.js or comparable is a plus.

• Proven experience with RESTful APIs and connecting frontend applications to backend services.

• Practical knowledge of contemporary cloud services, DevOps practices, CI/CD pipelines, and monitoring methodologies.

• A technology and language stack‑agnostic mindset with the versatility to quickly adapt and learn.

• Exceptional problem‑solving skills and an entrepreneurial spirit.

• Passion for deep involvement in product development.

• Strong empathy for our customers with a user‑centric mindset and a fervent passion for elevating user experience.

• Strong interpersonal and communication skills to interact with a diverse team and stakeholders.

• Experience or strong desire to work in early‑stage startup environments.

• Prior fintech industry experience.

About tensec

Founded in 2023, Tensec is a global fintech that enables small and medium‑sized businesses (SMBs) to enter global trade and thrive by giving them access to global transaction banking solutions that are user‑friendly, efficient, and secure.

Tensec founders have driven startups from foundation to exit, built decacorns, and led global teams at companies such as PayPal, Credit Karma, Facebook, Goldman Sachs, Visa, Mastercard, and American Express. We’re putting together a world‑class team to disrupt the $50 trillion cross‑border b2b financial services industry by providing SMBs the financial strength to participate and win in the global economy.

We believe that successful companies and teams are directly correlated to a company’s cultural DNA. At Tensec, we make a deliberate effort to create values and foster a culture able to unleash both human and organizational potential. We strongly believe that the best business results derive from teams that have a strong identification with a mission, push themselves to the edge, and love what they do.

The Tensec team is diverse and global, with members in New York, Palo Alto, and Sao Paulo. We are funded by top venture capital firms such as Costanoa Ventures, Quiet Capital, Cambrian Ventures, Ignia, WillowTree, and prolific angels such as Jason Pate (Head of Finance, Business and Corporate Development, Plaid), Bora Chung (ex‑Chief Experience Officer, Bill.com and Board Member, Remitly)

Tensec is a diverse and inclusive company committed to growing a diverse and inclusive team. We invite people of all backgrounds and identities to apply. We do not discriminate based on gender identity or expression, sexual orientation, race, religion, age, national origin, citizenship, disability, pregnancy status, veteran status, or any other characteristics protected by US federal state or local laws, or the laws of the country or jurisdiction where you work. Additionally, we encourage everyone to share which pronouns you wish for us to use when addressing you (i.e., she/her, he/him, they/them).