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Senior Full Stack Engineer with 10+ years building search, observability, financial-services, and digital health SaaS in regulated environments. I deliver end-to-end features from product discovery and UI to API development, data integration, testing, deployment, and production support. Recent work includes LLM-assisted retrieval, distributed search systems, telehealth workflows, and multi-tenant SaaS with strong security and auditability. I work closely with product, design, operations, and engineering to ship secure, understandable, and dependable software.…Senior Full Stack Engineer with 10+ years building search, observability, financial-services, and digital health SaaS in regulated environments. I deliver end-to-end features from product discovery and UI to API development, data integration, testing, deployment, and production support. Recent work includes LLM-assisted retrieval, distributed search systems, telehealth workflows, and multi-tenant SaaS with strong security and auditability. I work closely with product, design, operations, and engineering to ship secure, understandable, and dependable software.

Terry Tan

Full Stack Developer, Software Engineer, AI Engineer, +5

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Senior Full Stack Engineer with 10+ years building search, observability, financial-services, and digital health SaaS in regulated environments. I deliver end-to-end features from product discovery and UI to API development, data integration, testing, deployment, and production support. Recent work includes LLM-assisted retrieval, distributed search systems, telehealth workflows, and multi-tenant SaaS with strong security and auditability. I work closely with product, design, operations, and engineering to ship secure, understandable, and dependable software.…Senior Full Stack Engineer with 10+ years building search, observability, financial-services, and digital health SaaS in regulated environments. I deliver end-to-end features from product discovery and UI to API development, data integration, testing, deployment, and production support. Recent work includes LLM-assisted retrieval, distributed search systems, telehealth workflows, and multi-tenant SaaS with strong security and auditability. I work closely with product, design, operations, and engineering to ship secure, understandable, and dependable software.

Available to hire

Senior Full Stack Engineer with 10+ years building search, observability, financial-services, and digital health SaaS in regulated environments. I deliver end-to-end features from product discovery and UI to API development, data integration, testing, deployment, and production support.

Recent work includes LLM-assisted retrieval, distributed search systems, telehealth workflows, and multi-tenant SaaS with strong security and auditability. I work closely with product, design, operations, and engineering to ship secure, understandable, and dependable software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Full Stack Engineer at HealthHero

July 1, 2024 - Present

Owns full-stack delivery for telehealth workflows supporting patient intake, consultation routing, care navigation, and clinical operations across more than 2 million annual patient interactions. Builds clinician workspaces using React, Next.js, and TypeScript to improve visibility into triage queues, exceptions, consultation status, and workload. Develops Python/FastAPI services backed by PostgreSQL and Kafka on AWS for routing decisions and asynchronous processing. Introduces access-controlled LLM-assisted retrieval to reduce care-protocol lookup time by 36% while keeping recommendations human-reviewed. Reworks queue prioritisation and background processing to improve patient-triage throughput by 42%. Reduces manual documentation review effort by 31% using medical-text classification, structured validation, and reviewer-assistance features. Provides technical guidance across architecture discussions, code reviews, production troubleshooting, and secure handling of healthcare informat

Senior Full Stack Engineer at Elastic

September 1, 2021 - June 1, 2024

Delivered search and observability capabilities spanning React/TypeScript workspaces, Go services, Elasticsearch clusters, and Kafka pipelines. Designed search interfaces for index health, query diagnostics, log exploration, latency analysis, and alert review. Refactored search-processing services around asynchronous Go workers and Kafka, reducing P95 search latency from 420 ms to 130 ms. Improved cluster stability via shard allocation refinements, index lifecycle policies, ingestion validation, and query execution, reducing indexing failures by 29%. Tuned Lucene analyzers, tokenisation, ranking configurations, and Query DSL patterns to improve relevance across multi-tenant deployments. Extended workflows with vector retrieval, metadata filtering, semantic ranking, and LLM-assisted exploration of documentation, alerts, logs, and telemetry. Supported distributed environments with more than 10 billion searchable documents across product, infrastructure, support, and customer-engineering

Full Stack Engineer at Fenergo

August 1, 2019 - September 1, 2021

Developed onboarding and compliance products for regulated financial institutions, including analyst interfaces, backend workflows, APIs, and audit-sensitive operations. Built React/TypeScript dashboards for onboarding cases, document verification, compliance queues, approval flows, and analyst review. Implemented Python services and REST APIs for client lifecycle management, workflow approvals, document processing, and audit-trail operations. Migrated selected risk-assessment processes into RabbitMQ-backed background services, reducing reporting latency by 26%. Applied RBAC, field-level encryption, audit logging, and GDPR-aligned access controls across multi-tenant banking environments.

Software Engineer at Lanas Healthcare Technologies

July 1, 2016 - August 1, 2019

Developed React and JavaScript interfaces for programme enrolment, member tracking, care-team dashboards, coaching workflows, and administrative review. Implemented Java and Spring Boot services for care-plan enrolment, scheduling, member updates, reporting, and internal healthcare operations. Contributed to existing Python and Django reporting tools while keeping responsibilities separated from the primary Java service layer. Improved PostgreSQL and SQL Server queries supporting clinical reporting dashboards, care-team tools, and administrative workflows. Expanded automated test coverage with JUnit, PyTest, and Jest, reaching 85% coverage for core care-program modules.