Senior/Lead Full Stack Engineer (Node.js + React)

Department: Engineering

Employment Type: Full Time

Location: Medellin, Medellin, Colombia, Remote

Your day-to-day activities:

• 5+ years of professional full-stack development experience using TypeScript/React and Node.js (7+ years and prior technical leadership experience for Lead).
• Strong experience designing, building, testing, and maintaining scalable backend services and modern web applications.
• Hands-on experience working with WordPress, including custom integrations, APIs, plugins, themes, or headless CMS implementations.
• Experience integrating subscription, billing, or payment platforms, ideally Zuora.
• Experience working with Contentful or a comparable headless CMS.
• Experience implementing LaunchDarkly (or a comparable feature-flagging platform) — not just consuming flags, but structuring feature rollouts, experimentation, and progressive delivery.
• Strong knowledge of REST APIs, system integrations, data flows, and service-oriented architecture.
• Experience working with DynamoDB, Amazon RDS, or similar relational and NoSQL databases.
• Practical experience using AI-assisted development tools for coding, testing, debugging, documentation, and code review.
• Experience working in mature CI/CD environments and contributing to automated build, test, and deployment pipelines.
• Comfort with rapid prototyping, ambiguous scope, and shipping production-quality concept work — the R&D stream demands iterative delivery under evolving requirements.
• Strong understanding of software engineering practices: clean code, automated testing, version control, observability, and secure development.
  Experience collaborating with Product, Design, QA, and business stakeholders using tools such as Jira, Figma, Storybook, and Jellyfish.
• Strong communication skills in English and ability to work effectively in a distributed, cross-functional team, with meaningful daily overlap with US business hours.
• Ability to work within a regulated healthcare environment where reliability, privacy, HIPAA compliance, and data protection are essential.
• For Lead: ability to serve as the day-to-day technical point of contact with the client, proactively coordinating work across engineering, product, and QA, and making sure Senior team members are set up to be productive.
• For Lead: ability to guide architectural decisions, lead technical discussions, mentor engineers, and coordinate delivery across workstreams.
• For Lead: experience establishing development standards, improving engineering processes, and taking ownership of technical delivery and team outcomes.

You’re a perfect match if you have:

• Build and maintain full-stack applications using TypeScript/React and Node.js.
• Develop integrations with WordPress, Contentful, Zuora, and internal Tivity systems.
• Design APIs, backend services, data flows, and solutions using DynamoDB and RDS.
• Stand up and evolve feature flag configurations in LaunchDarkly to support progressive delivery.
• Use AI-assisted coding tools while ensuring code quality, security, and maintainability.
• Contribute to automated testing, code reviews, CI/CD, troubleshooting, and technical documentation.
• Collaborate with Product, Design, QA, and DevOps to deliver reliable healthcare solutions.
• Translate exploratory R&D concepts (mental health screeners, GLP-1 integrations, clinical adjacencies) into production-quality experiments.
• For Lead: serve as the day-to-day technical interface with Tivitys team, coordinating work with the client PM and ensuring Senior team members are productive.
• For Lead: lead technical design, planning, mentoring, and delivery of complex initiatives across the three workstreams.
• As a Senior team member, you will be expected to actively participate in our hiring processes by serving on interview panels for future roles across the company

• Experience in healthcare, health technology, insurance, or another regulated industry.
• Familiarity with AWS and cloud-native development.
• Familiarity with Datadog for observability, APM, logging, and alerting (part of the project stack).
• Experience with design systems, Storybook, accessibility (WCAG), and responsive applications.
• Knowledge of healthcare security, privacy, or interoperability requirements (HIPAA, HITRUST, FHIR).
• Prior experience with clinical instruments (PHQ-2/PHQ-9 or similar), telehealth, or health-tech incubation work.
• For Lead: experience introducing AI-enabled development practices across engineering teams.