We are a 100% digital company, with technology developed locally and a market leader in online buying and selling. We have become the brand that best represents the circular economy in the country. Today we operate two offices in Rio de Janeiro and São Paulo. Our flexible work model offers autonomy and freedom, enabling our people to design their own standards and routines with discipline and ownership—connecting directly with the business, its priorities, and its purpose. Building a diverse, inclusive environment committed to equity is part of our DNA. We understand that diversity, equity, and inclusion are essential to creating a safe environment that delivers innovative and efficient outcomes for our people and society. **Responsibilities and duties** If you want to be part of this challenge, this is your opportunity. In this **Senior Software Developer** role, you will join the **Financial Solutions – Billing Team**, whose objective is to **integrate financial postings and ensure group-level account closing across OLX Group.** **On a day-to-day basis, you will:** * Develop backend applications to support financial workflows; * Conduct code reviews for other team members; * Create documentation such as design documents and post-mortems; * Design cloud-based system architectures; * Integrate and participate in defining technical solutions alongside the team, capable of critically assessing and solving complex challenges; * Lead technical and business-oriented development within your team, aiming for high-value deliveries with technical excellence; * Participate in and drive continuous improvement of squads, with a medium- to long-term vision. **Requirements and qualifications** **What do you need?** * Experience developing in Node.js and Go, or at least one programming language; * Solid knowledge of cloud application usage; * Experience developing distributed applications using event-driven architecture; * Knowledge of NoSQL and SQL databases, and experience working with both relational and non-relational database systems; * Experience developing scalable applications; * Experience monitoring application observability in production; * Knowledge of Git, GitLab CI, and Docker. **Desirable / Differentiating factors** * Experience in the billing domain within finance; **Additional information** **More about OLX Group:** Our purpose is "Empowering Brazilians to achieve their dreams by reinventing the consumption model." We do this by digitizing our users’ buying and selling journey, strengthening conscious consumption, and transforming how we connect and relate to each other. For our opportunities, we value autonomy and encourage ownership. We believe you are jointly responsible for making the best choice to ensure a positive experience. After all, for us, a good experience is one that lasts! We do not discriminate based on color, nationality, gender identity, or whether a professional has a disability or not… what matters is having the necessary skills for each role and the drive to embrace challenges and learn every day. Here, we provide space for you to be yourself—free from judgment and prejudice. We value, develop, and recognize our people so they can grow and live their best lives alongside us—always with respect, empathy, and a focus on continuous feedback. **Benefits:** Market-competitive compensation Health insurance plan Dental insurance plan Private pension plan Flexible benefits tailored to your needs Meal allowance Financial counseling Benefits club Remote work allowance Mobility allowance Childcare allowance Life insurance Extended leave policies Incentives for sports, quality of life, and wellbeing Payroll-deductible loans with reduced interest rates **Apply now and join us in this transformation!** We are **OLX Group**, a **100% digital** classifieds marketplace connecting over **7 million people**. **Market leader** in buying and selling vehicles, real estate, and consumer goods—our diversified ecosystem provides an innovative platform for business and conscious consumption. We publish over **500,000 listings daily**, and our platforms (**OLX, VivaReal, and Zap Imóveis**) receive **70 million visits per month**. With technology developed in Brazil, we democratize access to commerce for everyone, contributing positively to the economy. Working at OLX means being part of a **high-performance culture**, surrounded by the **best talent**. We **think big**, always **look toward the future**, and strive to **lead our markets**. Thus, we **build trust** and generate **real impact** for businesses and people’s lives.