Senior React Native Mobile Developer

Sigmoid

Mexico City, Mexico City, Mexico (Sigmoid) Remote permanent

Posted: March 25, 2026

Job Description

Location: Mexico / Colombia (Colombia preferred for Global Program)

Engagement: Full-Time

Reporting into: Product Engineering Leadership

Role Summary

We are hiring a Mobile Technical Lead to anchor a global mobile delivery program focused on scaling feature velocity, improving release quality, and establishing strong version governance.

This role will own mobile architecture decisions, integration strategy with Java backend systems, and release discipline across multiple geographies.

This is not just a coding role — it is a delivery maturity role.

Key Responsibilities

Architecture Ownership

• Define scalable React Native architecture

• Establish modular component structure

• Define API integration contracts with Java backend teams

• Ensure environment-based configuration and version control governance ● Prevent codebase fragmentation across markets

Release & Quality Governance

• Implement structured CI/CD pipelines

• Define regression testing strategy

• Establish release readiness checklists

• Design rollback strategies

• Reduce post-release instability

Delivery Velocity Enablement

• Improve sprint predictability

• Introduce feature flag strategy

• Help product team assess complexity early

• Enable rapid 1–2 week test cycles

Multi-Version Control

• Ensure “single source of truth” mobile codebase ● Avoid region-specific forks

• Create upgrade paths for new features

Cross-Regional Leadership

• Work across Mexico, Colombia, US & India teams ● Mentor regional engineers

• Establish documentation discipline

• Drive knowledge redundancy to avoid SPOF

Required Skills

• 7+ years software engineering experience

• 4+ years React Native (production scale)

• Strong understanding of mobile architecture patterns ● Experience integrating with Java-based backend systems ● Experience with CI/CD (mobile pipelines)

• Experience with mobile performance optimization ● Strong experience debugging complex production issues

Strongly Preferred

• Experience scaling apps across multiple markets ● Experience with consumer mobile products

• Familiarity with distributed team delivery

• Experience with observability and crash analytics tools ● Prior experience acting as Technical Lead

What Success Looks Like

• Stable, scalable mobile platform

• Increased feature throughput

• Reduced regression loops

• Clear version governance

• Predictable global release cadence

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