Full-stack developer (Salesforce integration)

About the role

Gratia is expanding its elite delivery team to optimise and scale critical operational infrastructure for a high‑profile US client. As a Full‑Stack Web Developer you will take ownership of an existing internal pricing application, turning architectural blueprints into robust live features while executing complex schema migrations without disrupting upstream Salesforce data or downstream Kimball systems.

Key responsibilities

• Partner with the original founding developer to co‑maintain, optimise and expand the existing web application.
• Own end‑to‑end execution of a major live data‑model migration, ensuring zero downtime or data corruption.
• Maintain, troubleshoot and build robust integrations connecting upstream Salesforce data to downstream Kimball systems.
• Implement multi‑archetype data splitting, rewire approval logic, add a new pricing mode, update six lookup tables and deliver corresponding UI updates.
• Independently develop admin UIs, value levers, historical context trackers and feature toggles.

Required profile

• 5+ years of professional full‑stack web development experience.
• Expert‑level proficiency with relational data modelling and proven experience running live schema migrations.
• Deep working knowledge of Salesforce API and PSA/billing tool integrations.
• Demonstrated ability to quickly navigate and respect a single‑developer legacy codebase.
• Bilingual fluency in English and Spanish.

Required skills

• SQL
• PostgreSQL
• MySQL
• Salesforce API
• PSA integration
• Billing tool integration
• Full‑stack web development

What we offer

• High ownership and autonomy over feature deployment and live schema migrations.
• Immediate impact on live business systems for a high‑visibility US client.
• Potential extension and priority for future full‑stack, integration and architecture projects.
• Flexible remote work with 4‑6 hours overlap with US business hours.
• Independent consulting contract at $30 per hour for an initial 6‑month period (extension possible).
• Background check required.