3Pillar is an AI transformation partner on a mission to help enterprises build the AI-native products and intelligent agents that will define the next era of business. With teams across North America, Europe, Latin America, and Asia, we work with the most ambitious companies in financial services, healthcare, media, and technology — helping them move faster, modernize boldly, and compete on their own terms. Our HelixAI platform and Helix Pods delivery model put our engineers at the center of real agentic transformation — doing work that is open, portable, and built to last. We are building the future of enterprise AI. This role transcends the ordinary realms of coding; it's about orchestrating technological marvels that disrupt industries. Seize this extraordinary opportunity to lead a team that is actively shaping the tech landscape for our clients, and sets global standards along the way. RESPONSIBILITIES: * Independently guide the technical direction and implementation by the whole team within defined architecture in all stages from conceptualization to deployment. * Evaluate trade-offs between correctness, robustness, performance, and customer impact to ensure the development of the right solution, with client success at the forefront. * Create and lead the team's technical documentation and repository management practices, including tasks such as creating branches, pull requests, merges, etc. * Collaborate with product, design, and engineering teams to provide necessary oversight of architecture and dependencies influencing product strategy and direction. * Contribute to code reviews, documentation, and addressing complex bug fixes with a focus on security, performance, and reliability. * Be an active leader in the Engineering Practice community, mentoring Senior Engineers and others through Communities of Practice (CoPs) or on project teams, supporting the growth of technical capabilities. QUALIFICATIONS: * A minimum of 8+ years of experience/expertise working as a Full Stack Engineer, with proficiency in the specified technologies. * React * .Net Core (C#) * High level of English proficiency required to interact with a globally-based development team. * Experience leading Agile software development methodologies. * Deep expertise in ReactJS and modern frontend workflows. Proficient in styling and layout using advanced CSS. * Experience in architecture-designing and developing high-performance, secure, and scalable backend services and web APIs using .NET Core / .NET 6+ (C#) * Write clean, maintainable code across the full stack (ReactJS, C#, SQL Server, and advanced CSS). * Enforce strict quality standards by designing and writing comprehensive test cases to ensure structural and functional integrity. * Good working experience with SQL Server, modelling and Stored Procedures. * Hands-on experience with Azure cloud infrastructure, building Cloud Native applications, and implementing CI/CD pipelines. * Set the technical direction and orchestrate implementation strategies across development teams to ensure alignment with overall product goals. * Architect and design scalable, resilient, and secure enterprise-level systems using .NET Core, ReactJS, and Azure. * Demonstrated experience following and adapting high-level architecture to project and client needs. * Ability to verify/validate architecture implementations and influence overall architecture beyond the team. * Experience in the medical domain will be an advantage. * Demonstrated initiative in mentoring other engineers and decision-makers throughout the organization. * Very good knowledge of architectural styles and design patterns, SOLID principles and OWASP. WHAT IT'S LIKE TO WORK AT 3PILLAR: At 3Pillar, we create an environment where people can do their best work while maintaining a healthy work-life balance. Flexibility & Well-being – Our remote-first approach gives you the flexibility to work where you perform best, while prioritizing your well-being and personal commitments. Global Community – Collaborate with talented colleagues across the globe in a culture built on connection, support, and shared success. Your Voice Matters – We foster open communication and multiple feedback channels, ensuring every employee has the opportunity to be heard and make an impact. Growth & Development – Gain exposure to diverse clients, industries, and challenges that accelerate learning and career growth. Our culture is guided by four core values: Collaboration, Outperform, Respect, and Evolve—the principles that shape how we work, grow, and succeed together.