OneSeven Tech (OST) logo
OneSeven Tech (OST)

Digital Product Studio for Startups and Enterprises.

Full Stack Engineer – Node.js, TypeScript, PostgreSQL, AWS

Backend EngineerSoftware EngineerContractRemoteSeniorTeam 11-50H1B No SponsorCompany SiteLinkedIn

Location

Argentina

Posted

7 days ago

Salary

$4K - $5K / month

Seniority

Senior

Job Description

Full Stack Engineer – Node.js, TypeScript, PostgreSQL, AWS

OneSeven Tech (OST)

• Build and maintain REST API endpoints called by the voice AI agent — customer file lookups, caller identity validation, and escalation triggers • Integrate with the Qualia GraphQL API to pull real estate transaction data and build a caching layer for fast property lookups • Connect with Microsoft Teams via the Graph API to notify staff when a caller requires a callback • Design and maintain the PostgreSQL database — staff directory, routing configuration, call analytics, and cached data • Set up job scheduling for Qualia data syncing and automated callback workflows • Build the admin dashboard in Retool so the client's team can manage configuration and review call logs without engineering support • Collaborate closely with the AI/Voice engineer and technical lead — communication with the client flows through the PM and tech lead

Job Requirements

  • Strong Node.js / TypeScript backend development — production-grade, not just prototypes
  • REST API design — security (token-based auth, IP whitelisting), documentation, and edge case handling
  • PostgreSQL — schema design, queries, and full-text search (pg_trgm or similar)
  • Experience integrating third-party APIs in production — OAuth flows, webhook handling, and failure recovery
  • AWS experience — ECS/Fargate, RDS, S3, and basic networking (or equivalent cloud platform)
  • Professional English proficiency — clear written communication in Slack and pull requests
  • Comfortable working independently, raising blockers proactively, and communicating progress in standups

Benefits

  • $5,000/month — paid in USD, bi-weekly via Deel
  • Fully Remote — work from anywhere in Latin America
  • Long-term contract — starting with a 6-month contract, then full-time
  • Paid PTO — competitive package
  • Referral Program — earn a bonus for referring talent that gets hired

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