About Demian Louis
Available immediately. Senior full-stack software engineer with 7+ years of experience, specialising in React and TypeScript to deliver accessible, high-performance user interfaces and reusable component systems that help product teams ship and iterate quickly.
I complement strong frontend expertise with Kotlin / Spring Boot backend development, allowing me to deliver complete features end-to-end — from API design and data modelling through to UI integration, testing, and deployment. I’m pragmatic, detail-oriented, and comfortable working closely with designers and product owners to translate product goals into polished, production-ready features.
I’m experienced working autonomously in senior contract roles, able to ramp up quickly, navigate unfamiliar codebases, and contribute meaningful value with minimal oversight. I place a strong emphasis on maintainability, observability, and long-term code health.
Typical projects I support include:
• Frontend builds and refactors
• Design systems and component libraries
• End-to-end feature delivery
• REST APIs and third-party integrations (including SaMD medical AI)
Selected experience:
• Exam priority system — delivered UI and backend changes to prioritise live exams and accelerate critical result delivery
• SaMD AI integration — integrated third-party medical AI into existing workflows to expand diagnostic capability
• Admin dashboards — built focused dashboards with filters and actionable views to speed issue triage for support and stakeholders
• Sentry rollout — implemented organisation-wide monitoring and triage documentation, reducing mean time to resolution
Available for short engagements as well as longer-term collaborations (3–12 months).
English
Native or bilingual
Spanish
Basic
Can work on-site
Málaga (up to 50km)
Experience
- iCareSenior Software EngineerMEDICALJune 2024 - September 2025 (1 year and 3 months)Melbourne VIC, Australia- Built and enhanced React + TypeScript front-end features and admin dashboards for a SaaS platform, improving support response and stakeholder visibility and reducing time-to-resolution for user-facing issues- Improved patient result delivery times by leading the "Exam Priority" stream: prioritised live exams and scheduled non-live exams during quiet periods, increasing system capacity efficiency and speeding access to critical results- Led implementation of Sentry error monitoring across the entire tech landscape by coordinating integration and developing triaging documentation, resulting in faster issue resolution and improved reliability- Improved early medical diagnosis by researching and technically evaluating third-party AI APIs, leading to successful integration that expanded diagnostic options and enabled proactive healthcare decisions for users- Full‑stack development using React, TypeScript, Kotlin, Spring Boot, and PostgreSQL for a SaaS product
- iCareSoftware EngineerMEDICALJune 2021 - June 2024 (3 years)Melbourne VIC, Australia- Developed a comprehensive early eye disease detection web application as a founding engineer, building React + TypeScript front-end and Kotlin + Spring Boot back-end to take the product from inception to production- Integrated third-party Software as a Medical Device (SaMD) AI solutions end-to-end, enabling secure data exchange, standardized API contracts, and validated inference workflows- Designed and implemented core system architecture and services, including authentication, audit logging, and data pipeline components to support regulated clinical workflows- Conducted code refactoring and performance optimizations across front-end and back-end codebases to improve maintainability, reduce latency, and lower cognitive load for future contributors- Implemented PostgreSQL schema design and migration strategies to ensure data integrity, efficient queries, and safe evolution of clinical data models- Ensured type safety and developer ergonomics with TypeScript across the UI, including typed API clients and shared DTOs between front-end and back-end- Built secure integration patterns for third-party AI (JWT, signed payloads, retry/backoff, idempotency) and added monitoring/telemetry to validate model behavior in production
- Alex SolutionsSoftware DeveloperJuly 2019 - June 2021 (1 year and 11 months)Melbourne, Australia- Designed, developed, documented, and maintained production-quality software in an Agile environment, delivering iterative improvements and stable releases- Collaborated on requirements analysis and produced clear functional designs, flowcharts, and diagrams to align stakeholders and guide implementation- Diagnosed and fixed production defects, often liaising directly with clients to gather reproducible steps and conduct root-cause analysis for faster resolution- Researched emerging software concepts and built proofs-of-concept to validate technical approaches and de-risk feature decisions- Grew full-stack expertise by working across front-end and back-end technologies, contributing to API design, UI components, and database schema changes- Ran TDD, refactoring, and pair-programming workshops for graduate, junior, and intermediate engineers to raise code quality and team engineering capability
Recommendations
Be the first to recommend Demian Louis
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Bachelor of Information TechnologyMonash University2018Bachelor of Information Technology
- Bachelor of FilmSwinburne UniversityBachelor of Film