Senior Backend – Data Engineer

3Pillar Global

Senior Backend / Data Engineer responsible for backend and data foundation of multi-tenant AI platforms. Collaborating on advanced database design, API services, and data pipeline orchestration.

Posted 7/10/2026full-timeRemote • 🇲🇽 MexicoSeniorWebsite

Tech Stack

Tools & technologies

ETLPostgresPythonSQL

About the role

Key responsibilities & impact

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.
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

Requirements

What you’ll need

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

Benefits

Comp & perks

Medical Insurance benefits as per company policy.
Life Insurance as per company policy
15 days of paid vacation plus additional days based on tenure
Vacation bonus as per local law
Sick leave and paid holidays as per local law
Profit sharing as per local law
Paternity and maternity leave as per as per local law
Marriage, bereavement and graduation leaves as per company policy
Christmas bonuses as per local law
Work from home allowance as per company policy
Punctuality and attendance bonuses as per company policy
Food tickets as per company policy
Direct deposit of payroll.
Paid professional certifications

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PostgreSQLPythonFastAPIData Pipeline OrchestrationETL ProcessesSQLSchema DesignRow-Level SecurityAsync ProcessingContract-First Development

Soft Skills

CollaborationOwnershipCommunicationStatus TrackingReporting