Senior Backend | Data Engineer

Key Responsibilities

Backend

• Design and implement advanced PostgreSQL schemas with row-level security (RLS) for multi-tenant applications.
• Build and maintain async-heavy backend services using Python frameworks (e.g., FastAPI) with Pydantic validation.
• Architect scalable data pipelines and orchestrate complex multi-stage data processing workflows.
• Implement and enforce data isolation patterns in shared database environments.
• Design and manage complex data workflows (e.g., additive data changes, diff detection, and selective re-processing).
• Write and maintain OpenAPI contracts that serve as the development spec for cross-functional teams.
• Collaborate with AI/LLM Leads on output validation, deterministic data integration, and system reliability.

Cross-functional

• Craft code that is performant, testable, scalable, and secure
• Provide accurate status tracking, reporting, and estimation
• Collaborate with fellow engineers and product leadership to understand requirements
• Take ownership from technical design through successful delivery

Minimum Qualifications

• Python 5+ years (primary backend language)
• PostgreSQL & database architecture (RLS, multi-tenancy, schema design)
• FastAPI or equivalent async Python framework
• Experience with data pipeline orchestration, ETL processes, and async processing
• 5+ years total software engineering experience with hands-on work in both backend and data engineering
• Experience in engineering software systems of medium-to-large scope and complexity
• Contract-first or API-first development – familiarity with OpenAPI, REST API contracts, or similar
• Familiarity with Agile software development methodologies
• Proficiency with relational databases and SQL
• Proficiency in English

Additional Experience Desired

• Pydantic & JSON schema validation (for structured backend output)
• AWS RDS and managed database services
• Multi-tenant SaaS architecture patterns
• Docker & containerization
• Experience with LLM/AI system integration from a data perspective
• AWS IAM and secrets management
• Migration tools (Alembic for Python)
• Testing strategies for data integrity and security (unit, integration)
• Understanding of Software Development Life Cycle (SDLC) and AI SDLC
• Knowledge of HTTP protocols and serialization formats (JSON, XML)

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

What is it like working for 3Pillar Global?

• Imagine a flexible work environment – whether it's the office, your home, or a blend of both. From interviews to onboarding, we embody a remote-first approach.
• You will be part of a global team, learning from top talent around the world and across cultures, speaking English everyday.
• We’re big on your well-being – as a company, we spend a whole trimester in our annual cycle focused on wellbeing.
• Our professional services model enables us to accelerate career growth and development.