Role Description We are looking for a Senior Full Stack Engineer with a strong frontend orientation and genuine hands-on experience in EVM development. This is an early team role, which means you will have real ownership over engineering decisions, architecture, and culture. You will build and maintain production systems using React and NestJS, integrate Web3 libraries for wallet connections and smart contract interactions, and ship code in a fast-paced environment with near-daily deployments to production. If you have worked on DeFi protocols or tokenization products before and you know your way around ethers, wagmi, or viem, this role was built for someone like you. Location: Remote, Europe or the Americas (Ukraine timezone compatible) What You Will Do - Design, develop, and maintain scalable, high-quality systems with a security-first mindset and a preference for simple, reliable architecture - Build and maintain fullstack services using React and NestJS within a monorepo setup - Implement scalable APIs following RESTful design patterns - Integrate Web3 libraries and frameworks for wallet connections, smart contract interactions, and transaction management - Write unit and integration tests and contribute to CI/CD pipelines using GitHub Actions - Ship frequently in an agile environment with near-daily production deployments - Contribute as an early team member to engineering practices, culture, and technical direction Qualifications - At least 5 years of software development experience with strong command of Node.js, TypeScript, ReactJS, and PostgreSQL - 2 or more years of hands-on experience with EVM and common Web3 libraries such as ethers, wagmi, or viem - Experience with NestJS for backend service development, ideally within a monorepo setup - Experience building and integrating smart contract interactions in production environments - Comfort working across the full stack, with a natural lean toward frontend - Startup mindset: you move fast, take ownership, and do not need heavy process to stay productive - Strong communication skills and the ability to collaborate across a small, high-ownership team Benefits - Base salary between $70,000 and $120,000 annually, depending on experience - Equity as part of the compensation package - A fully remote engagement with a team that values ownership, trust, and speed - Early team status with real influence over the product, engineering culture, and technical direction - A front-row seat to one of the most technically and legally complex verticals in crypto right now

• Design, develop, test, and deploy scalable software solutions with a focus on performance and security. • Integrate with backend accounting databases using XML and REST APIs. • Collaborate with cross-functional teams to gather requirements and translate them into technical solutions. • Write clean, maintainable, and efficient code following industry best practices. • Conduct code reviews, debug applications, and optimize performance. • Contribute to architectural decisions that support scalability and long-term growth. • Implement automated testing and continuous integration to maintain high software quality. • Stay current with emerging technologies and advocate for best practices in development.

Role Description Atuar como Desenvolvedor(a) FullStack Sênior responsável pelo desenvolvimento e evolução de soluções escaláveis, performáticas e resilientes, com foco em backend Java e frontend Angular. A posição tem como missão garantir qualidade técnica, alta disponibilidade e evolução contínua da arquitetura de microsserviços, contribuindo diretamente para a entrega de valor ao negócio. Responsabilidades - Desenvolver e manter serviços e APIs REST de alta performance em Java. - Desenvolver interfaces Front-End utilizando Angular. - Implementar mecanismos de resiliência e otimização de performance. - Garantir qualidade de código por meio de testes e code review. - Participar da definição e evolução da arquitetura de microsserviços. - Colaborar com squads multidisciplinares em ambiente ágil. Qualifications - Experiência sólida com Java (11+). - Domínio do framework Spring Boot. - Experiência com arquitetura de microsserviços. - Conhecimento em estratégias de resiliência e performance. - Experiência com caching e Redis. - Conhecimento em bancos de dados relacionais e NoSQL. - Experiência com Cloud (AWS, Azure ou GCP). - Boa comunicação e trabalho em equipe. - Perfil analítico e orientado à solução. Requirements - Experiência com Docker e Kubernetes. - Conhecimento em mensageria (Kafka ou RabbitMQ). - Experiência com observabilidade (Datadog, Prometheus, Grafana). - Vivência em sistemas distribuídos. - Mentalidade DevOps. Benefits - Modelo: Remoto - Horário: Comercial

• Design and implement end-to-end product capabilities, from user-facing workflows to supporting backend systems. • Own substantial features or system areas from initial design through production. • Contribute to technical design discussions and help refine implementation approaches. • Raise risks, edge cases, and tradeoffs early. • Write high-quality, well-tested code and actively participate in code reviews. • Improve reliability, performance, and maintainability of the systems you touch. • Monitor system health and help diagnose and resolve production issues. • Collaborate with other teams when integrations or shared systems are involved. • Participate in root cause analysis and strengthen systems to prevent recurring issues.