Full Stack Developer.

Full Stack Developer (Backend-Focused)Priority Location: South Africa / Latin America / PhilippinesWorking Hours: 9:00 AM – 5:00 PM ESTSalary Range: Market relatedType of contract: Independent ContractorType of job: RemoteAbout the Role: We are seeking a Full-Stack Developer (Backend-Focused) with 5+ years of software engineering experience to join our 7-person technology team, led by a CTO who provides overall technical direction.This role is ideal for an engineer who enjoys solving practical, real-world technical problems, taking ownership of their work, and building reliable solutions across our technology stack, with a primary focus on backend development.The Ideal Candidate:Quickly understand existing code: Able to get up to speed on an existing codebase and begin making meaningful contributions quickly.Improve rather than over-engineer: Comfortable working within existing systems and making practical improvements without unnecessary rewrites.Strong problem-solving: Able to break down complex technical problems and identify practical, effective solutions.Good technical judgment: Makes thoughtful decisions around architecture, implementation, performance, and maintainability.Production-focused: Builds reliable, scalable software that is well-tested and ready for production use.Key Responsibilities:Backend & Integrations: Design, build, and maintain robust backend services, REST APIs, and third-party platform integrations (payment gateways, clinical databases, operational tools).Data Pipelines & Warehousing: Improve data pipelines, BigQuery architecture, and reporting infrastructure to ensure 100% data integrity, monitoring, logging, and alerting.Workflow Automation & AI: Build AI-powered agents and workflow automations using LLMs and modern frameworks to eliminate manual administrative and operational effort.Full-Stack Execution: Own existing codebases incrementally; contribute to React-based internal tools, dashboards, and operational interfaces as needed.Qualifications:Non-Negotiable: AI & Automation ExperienceMust have hands-on experience building and deploying real-world applications using LLM APIs, AI agents, or modern AI frameworks (e.g., LangChain, LangGraph, PydanticAI).Actually built and shipped AI-powered features or automations, not simply experimented with AI tools or used LLMs as part of their development workflow.Non-Negotiable: Sensitive & Regulated Data ExperienceMust have professional experience working with sensitive, confidential, or highly regulated data in a production environment.This includes experience with data requiring strong security, privacy, access controls, compliance, or regulatory safeguards.Relevant experience may come from HealthTech, FinTech, LegalTech, GovTech, or other industries where protecting sensitive data is a core part of the technology environment.Candidates should understand the practical requirements of building and maintaining systems where data security, privacy, and compliance cannot be treated as an afterthought.Core Technical StackPrimary Languages: TypeScript / Node.js (Strong emphasis), SQL, Python (beneficial for AI/Data)Data & Cloud: PostgreSQL / Supabase, BigQuery, Looker StudioFrontend / Internal Tools: React, Modern Web FrameworksAI Frameworks: LLM APIs, LangChain, LangGraph, PydanticAI, or AI Agent architectures