• Design and implement scalable, reliable backend systems - from architecture through production deployment. • Harden and optimize the platform for stability, performance, and release readiness. • Lead implementation of backend services, APIs, and data models with a strong focus on maintainability strategies. • Experience in data modeling and working on No SQL database like MongoDB as Unqork heavily uses MongoDB. • Set technical standards and establish best practices across code quality, architecture, and system design. • Act as a hands-on technical leader reviewing code, debugging complex issues, and improving performance where needed. • Collaborate closely with Product, QA, and Design to translate business problems into well-structured technical solutions. • Hands on experience with ability to utilize AI for development and analysis. • Ask the right technical questions early to clarify requirements and reduce downstream risk. • Help define engineering roadmaps, technical milestones, and delivery metrics. • Improve development workflows and processes to increase team velocity and reliability.

• Propor e implementar soluções técnicas para os assets do squad, garantindo alta performance e estabilidade. • Desenvolver e manter a ferramenta de chat do site da RD Station. • Desenvolver e manter front-ends em Next.js e React, além de back-end em Node.js. • Implementar testes unitários e sintéticos para garantir a qualidade do código e dos sistemas. • Implementar testes A/B para otimização de resultados. • Trabalhar com ferramentas de tracking para análise de métricas e resultados de experimentos. • Colaborar com times multidisciplinares (IA, Data Science, Data Engineering, BI) e áreas de negócio para entregar soluções alinhadas às necessidades de Marketing, Sales e Customer Success. • Manter a codebase em Next.js, React e Node.js, garantindo qualidade e performance.

• We're looking for strong backend engineers who love building reliable systems around fragmented, but high-value data. • As part of the Core Backend team, you’ll work on the systems at the center of Kalepa: designing services, data models, pipelines, and evaluation loops. • The goal is not just cleaner data, but an intelligence layer that makes better, faster, and more explainable decisions. • You’ll join a high-ownership team responsible for some of Kalepa’s most business-critical infrastructure. Your work will make our data more complete, our decisions more transparent, and our products even more valuable.

• Experience in medium to high complexity projects, working from conception through production delivery; • Involvement in defining solution architecture and development standards; • Performing code reviews, automated testing, and applying development best practices; • Experience with cloud environments and production applications; • Object-Oriented development and componentization.