Senior Engineer, AI Transformation

3Pillar is an AI transformation partner dedicated to helping enterprises build 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 collaborate with ambitious companies in financial services, healthcare, media, and technology to help them move faster, modernize boldly, and compete on their own terms. Our HelixAI platform and Helix Pods delivery model place 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.

Key Responsibilities:

• Independently guide the technical direction and implementation by the whole team within defined architecture, 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 branching, pull requests, and merges.
• Collaborate with product, design, and engineering teams to provide 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.
• Actively lead 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.

Minimum Qualifications:

• A minimum of 10+ years of web development experience, with proficiency in:
• Python and Python frameworks
• PostgresSQL
• AWS
• Docker
• At least a working knowledge of frontend development (JS, CSS, HTML).
• Familiarity with the OAuth2 and OpenID Connect protocols.
• High level of English proficiency for interacting with a globally-based development team.
• Experience leading teams working in Agile software development methodologies.
• 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.
• Expertise in applying object-oriented programming, with preferred experience in languages like Python.
• High-level design proficiency following UML / C4 / ArchiMate.
• Experience in effectively collaborating among relevant information stakeholders to create and implement well-tested, scalable, secure, and performant enterprise-level systems that deliver the client’s desired business outcome.
• 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.

Additional Experience Desired:

• Experience integrating Customer Identity and Access Management solutions.
• Ability to set technical strategy and direct implementation across several teams/whole product.
• Ability to refine and clarify technical details (including definition of done) based on internal or external PO for User Stories and task assignments.
• Ability to provide technical orchestration among the overall tasks.
• Experience in building CI/CD pipelines.
• Experience working with non-relational databases.
• Knowledge of building Cloud Native applications.

Benefits:

• Medical Insurance benefits as per company policy.
• Life Insurance as per company policy.
• 12 days of paid vacation, sick leave, and paid holidays as per local law.
• Paternity and maternity leave as per local law.
• Marriage, bereavement, and graduation leaves as per company policy.
• Sick leave and paid holidays as per local law.
• Christmas bonus as per local law.
• Saving Fund “Asociacion Solidarista”.
• Beach house (Managed by the Asociacion Solidarista).
• Discounts in local shops.
• Direct deposit of payroll.
• Paid professional certifications.

Working at 3Pillar:

• Flexible work environment: Remote-first approach from interviews to onboarding, with options for office, home, or a blend.
• Global team: Learn from top talent worldwide and across cultures, speaking English daily.
• Well-being: Focus on well-being with fitness offerings, mental health plans (country-dependent), and generous time off.
• Career growth: Accelerate career growth and development opportunities across projects, offerings, and industries.
• Equal Opportunity Employer: Committed to diversity and inclusion, living by values like Intrinsic Dignity and Open Collaboration.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.