FullStack Developer III

Description

Job Summary: The Senior FullStack Developer will define architectures, master multiple technology stacks, solve complex problems, and guide the technical team to impact production and quality. Key Highlights: 1. Define and evolve architectures for complex systems 2. Technically lead the team, promoting best practices and mentoring 3. Resolve critical, highly complex problems in production environments **JOB DESCRIPTION** We are looking for someone to help us build the future—contributing to system evolution and maintenance with a focus on continuous delivery and quality. The Senior FullStack Developer defines complete architectures, masters multiple stacks, solves complex problems, implements scalable solutions, and guides the entire technical team. Your work will directly impact production, delivery quality, and team predictability. **RESPONSIBILITIES AND DUTIES** * Define and evolve complete architectures for complex systems, ensuring scalability, resilience, and alignment with business objectives. * Participate in technical decision-making, evaluating architectural trade\-offs and production risks. * Technically lead the team, promoting development best practices, code reviews, and mentoring. * Resolve critical, highly complex problems in production environments—especially in legacy systems and sensitive integrations. **REQUIREMENTS AND QUALIFICATIONS** **Mandatory** * Strong expertise in Java and distributed systems architecture. * Advanced knowledge of Oracle databases and PL/SQL development. * Solid experience with complex integrations using SOAP, REST, and messaging (JMS). * Proven ability to work independently, guide other developers, and support technical decisions in critical environments. **Desirable** * Experience with specific frameworks and architectures such as OSGi and OSWorkflow. * Practical use of observability tools like New Relic. * Knowledge of identity and security, especially WSO2 IdP. * Prior experience in complex corporate environments with multiple integrated systems. * Systems architecture (coupling, consistency, resilience, trade\-off\-driven design). * Performance and optimization (thread pools, CPU and memory usage, query tuning). * DevOps with Jenkins (advanced pipelines, releases, versioning with hotfix/master). * Observability (structured logs, metrics, and APM). * Technical governance (code reviews, mentoring, production risk management). **Education:** Completed undergraduate degree in Computer Science, Computer Engineering, Information Systems, or related fields. Postgraduate studies or specialization in software architecture, systems engineering, or related areas will be considered a plus. #### **At Brain, innovation isn’t just talk—it happens for real.** #### **We build the path to the future,** **because we believe it’s being built right now.** #### **We are a Science and Technology Institute,** **founded in 2017 by Algar, transforming** **challenges into innovative products, services, and business models.** **All with one clear goal: simplifying people’s and companies’ lives.** **For us, innovation isn’t rhetoric—it’s delivery and results.** #### **We operate across three fronts: driving innovation within Algar, connecting startups and partners to our ecosystem, and helping companies turn ideas into reality—transforming innovation into tangible impact.** #### **We work with agile methodologies, granting autonomy to create, space to experiment, and trust to grow together. Our** **environment is dynamic, creative, and designed for curious, eager-to-learn individuals with the courage to turn challenges into solutions. If you love innovation in practice, you’ll feel right at home in our offices in Uberlândia/MG and São Paulo/SP.