Brazil - Hybrid: Senior Software Developer - Platform & Complex Systems (RJ, BR)

We are looking for the right people — people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the world’s largest providers of products and services to the global energy industry. Senior Software Developer – Platform & Complex Systems (Senior / Lead Individual Contributor – Multi‑Track Job Posting) About This Job Posting This job posting is designed to attract senior-level software developers, data professionals, and technical specialists to join Landmark, where we build and evolve platforms and complex systems operating on a global scale. This is a technology‑first opportunity, focused on deep technical challenges related to system architecture, scalability, performance, data, and reliability — far beyond standard application development. This is one job posting covering multiple technical tracks (roles). Candidates must select the technical track that best matches their background when applying. Mandatory application questions will guide this selection. What You Will Work On Depending on your selected technical track, you will: Design, develop, test, and maintain complex software platforms and systems Work on large-scale, distributed, and performance-sensitive applications Contribute to system architecture and technical decision-making Build and integrate services using APIs, microservices, and complex data flows Improve performance, scalability, security, and reliability Apply modern engineering practices including CI/CD, automation, cloud, and Agile Collaborate with global, cross-functional teams Act as a senior technical contributor or lead individual contributor Continuously expand your technical skills and system-level expertise Technical Tracks Covered by This Posting Track 1 – Full Stack Developer (Web & Cloud Platforms) For developers focused on modern, scalable software platforms. Typical focus areas: Frontend development with Angular (v12+), TypeScript, HTML, CSS Backend services using Node.js, REST APIs, microservices Cloud-native development on Azure and/or AWS Containerization and orchestration (Docker, Kubernetes) SQL and NoSQL databases Track 2 – Platform Developer – Performance & Optimization For developers passionate about efficiency, performance, and system optimization. Typical focus areas: Full stack or backend development Performance profiling and tuning of distributed systems Kubernetes optimization and cloud resource efficiency Cost-aware architectural decisions Observability, scalability, and reliability engineering Track 3 – Software Developer (C++ / Complex Systems) For developers working close to the core of high‑performance, engineering‑heavy software. Typical focus areas: Development in C++ (MFC experience strongly valued) Performance-critical and system-level applications Object‑oriented design and low-level problem solving Integration with databases, APIs, and external services Working with complex legacy and modernized systems Track 4 – Technical Developer – Quality, Validation & System Behavior For technically strong profiles focused on system correctness and reliability. Typical focus areas: Validation and quality assurance of complex software or data-driven systems Designing test strategies for advanced platforms and workflows Understanding system behavior, edge cases, and failure scenarios Partnering closely with developers to improve system robustness T his is not traditional manual QA. It suits developers or technical specialists who enjoy deep system understanding and validation. What We Are Looking For (Across All Tracks) Bachelor’s degree or equivalent experience in: Computer Science Software, Systems, or Engineering disciplines Data Science, Mathematics, Physics, or related fields 7+ years of professional experience in software development or technical roles Strong foundations in problem solving, system design, and software fundamentals Experience working on complex, non-trivial systems Ability to collaborate effectively in distributed, cross-functional teams Good communication skills in English Motivation to grow as a senior or lead individual contributor Job titles and academic backgrounds may vary — what matters is deep technical experience, system-level thinking, and alignment with one of the defined technical tracks. Why Join Landmark Work on platforms and complex systems, not just features Solve challenging technical problems with real-world impact Collaborate with experienced engineers and developers globally Exposure to advanced architectures, performance challenges, and large-scale data Strong culture of learning, knowledge sharing, and technical excellence Clear growth paths for technical experts and lead contributors Location & Work Model This job posting is open to candidates based in Brazil or Colombia, with full collaboration across global teams. Hybrid (