Senior Software Engineer I

Checkout.com; São Paulo; On-site; BRL 100,000 - 150,000; Full time

Job summary

Checkout.com is looking for a Senior Software Engineer to lead projects and work across teams in São Paulo, Brazil. This role is aimed at engineers who are passionate about enhancing products through innovative software solutions.

The successful candidate will possess a Bachelor's or Master's degree in Computer Science or a related field, and be proficient in C# .NET, Java, or Go. The position emphasizes clean code, agile teamwork, and a strong ability to problem-solve.

Qualifications

• Proficiency in C# .NET, Java, or Go.
• Experience in agile environments and delivering high-quality code.
• Excellent communication skills to interact with stakeholders.

Responsibilities

• Lead and drive specific projects critical to company needs.
• Design, develop, test, deploy, maintain, and enhance software solutions.
• Collaborate with cross-functional teams including product management.

Skills

C# .NET

Java

Go

Agile methodology

Communication skills

Problem-solving

AI proficiency

Education

Bachelor's or Master's degree in Computer Science, Engineering, or related field

Job description

Senior Software Engineer

We’re looking for a Senior Software Engineer who brings fresh ideas, has a curious nature, and is passionate about working in an engineering environment that focuses on building products to achieve the company's strategic goals. You’ll get to work with teams from across Checkout.com’s portfolio of products and services that all have a real customer‑first philosophy.

As a Senior Software Engineer, you will lead and drive specific projects critical to Checkout’s needs with opportunities to switch teams and projects as you and our fast‑paced business grow and evolve. We need our engineers to be versatile, display exceptional leadership qualities, and be enthusiastic to take on new problems across the full‑stack as we continue to push technology forward. With your technical expertise you will lead project priorities, deadlines, and deliverables. You will design, develop, test, deploy, maintain, and enhance software solutions.

What are we looking for:

• Bachelor's or Master's degree in Computer Science, Engineering, or related field
• Proficiency in C# .NET, Java, or Go, with a strong understanding of software development principles in either a backend or full‑stack environment.
• Great communication skills and ability to interact effectively with a wide range of stakeholders
• Experience working in agile environments and delivering high‑quality code within tight deadlines
• Excellent problem‑solving skills and the ability to work independently as well as part of a team
• Someone who is AI proficient or AI curious, you will be hungry to embrace what the latest technology has to offer to enhance yours and your teams productivity
• Payments or financial knowledge is a plus, but not a necessity

How you’ll make an impact

• Be part of, and collaborate with, cross‑functional teams including product management, across a large engineering community.
• Define and design loosely coupled, scalable systems in a wider microservices using industry best practices.
• Stay up‑to‑date, use, and spread knowledge of the latest technologies used by Checkout.
• Write clean, maintainable, extendable and testable code on some of Checkout’s most impactful systems.
• Build, own and operate your systems to the highest levels of resilience and service.
• Mentor junior team members and assist in their technical development