Go
C#
TypeScript
JavaScript
Python
PHP
Java
Kotlin
C++
.NET
Laravel
Gin
Echo
Express
Next.js
TanStack Start
PostgreSQL
Snowflake
MySQL
Redis
Supabase
Docker
Kubernetes
K3s
AWS
CloudFormation
AWS Glue
Terraform
Ansible
Firebase
Proxmox
Linux
GitHub Actions
Grafana
Prometheus
Loki

Issue #26West Java, Indonesia

Devan Ferrel

Full-stack & backend engineer

Full-stack and backend engineer. I build reliable systems in Go, .NET, Laravel, TypeScript and Python, run them on Docker, Kubernetes and AWS, and move data through PostgreSQL and Snowflake. Two years shipping with remote teams in the US, Singapore and Indonesia, plus a habit of competitive programming and sunrise hikes.

2 yrsremote: US, SG, ID
6teams shipped with
250+students taught
3.79GPA, Brawijaya ’26

Get in touch Resume

Devan in a black shirt leaning on a rail above a bay with islands

Devan crouching on a wet rock at the edge of the sea under blue sky

Devan standing in tall golden grass, looking at fog filling a mountain valley

Journey

The Work

6 gigs

Jan 2026 – now'26 01 → NOW
EvidenceCare
Software Engineer
United States · Full-time · Remote
U.S. healthtech for clinical decision support.
- Two-way Snowflake ⇄ PostgreSQL pipeline on AWS Glue, live in 4 hospital environments.
- Moved 10+ clinical metrics off a $20K/month Python engine with 99–100% data parity.
- Built a bidirectional data pipeline between Snowflake and PostgreSQL on AWS Glue and CloudFormation, deployed across 4 hospital client environments. Analytics data flows downstream to the app database while client configuration flows upstream to Snowflake.
- Ported 10+ clinical metrics from a legacy Python engine that cost $20K in monthly AWS bills to Snowflake procedures, with data parity validation that matched 99–100%, reducing the company's monthly AWS cost.
- Delivered CareGauge's new orders data pipeline across 3 PostgreSQL schemas and 50+ stored procedures, including 6 processors that ingest live HL7 clinical feeds from hospital systems. Migrated all 6 API services onto it while keeping the existing endpoints backward compatible, so downstream consumers kept working without changes.
- Built a Python service ingesting 947,000 clinical ontology records into PostgreSQL on a monthly refresh, with resumable downloads and job state stored in the database so progress survives container restarts. Deployed it through CloudFormation on scheduled serverless infrastructure inside a private network, with a scoped credentials role and automated status alerts to Teams.
- Snowflake
- PostgreSQL
- AWS
- AWS Glue
- CloudFormation
- Kubernetes
- Python
- TypeScript
- Express
- HL7
NOW!
Aug 2025 – Aug 2026'25 08 → '26 08
The Questlabs ID
Backend Engineer
Jakarta · Freelance · Remote
Indonesian agency matching freelancers with clients.
- Rewrote a native PHP backend as a Laravel app with 200+ REST APIs.
- Wired up Xendit payments, Mailgun and Kaspersky subscriptions on queues + Redis.
- Rewrote a legacy native PHP backend into a production-ready Laravel application with 200+ REST APIs, migrating the existing database and content while building out auth, payments, orders, a content management system, file export/import and user management.
- Integrated the Laravel API with the Xendit payment gateway, Mailgun API and Kaspersky subscription service for payment processing, Kaspersky subscription management and automated email workflows using Laravel Queues and Redis.
- Laravel
- PHP
- Redis
- Xendit
- Mailgun
Feb 2025 – Dec 2025'25 02 → '25 12
Suitmedia
Software Engineer
Jakarta · Contract · Remote
Enterprise software agency for government clients.
- Split a .NET Framework monolith into 3 independently deployable services.
- Closed 200+ SIT/UAT defects with 5 QAs before a capital-market release.
- Refactored and migrated a legacy monolithic .NET Framework application into 3 decoupled, independently deployable services, enabling faster regulatory updates and reducing system-wide deployment risk in a capital market environment.
- Ensured regulatory compliance and system integrity by resolving 200+ SIT/UAT defects before production release in a capital market environment, collaborating with 5 QAs.
- .NET
- C#
Nov 2024 – Feb 2025'24 11 → '25 02
SwiftX Solutions
Software Developer
Singapore · Full-time · Remote
Singapore IT provider for the public sector.
- Fixed session drift across Kubernetes replicas with PostgreSQL-backed caching on EKS.
- Containerized a .NET government app, clearing 20+ Linux container issues.
- Resolved a critical Kubernetes session inconsistency across multi-replica pods in a Singapore government NASTransfer application by migrating from in-memory session storage to PostgreSQL-backed distributed caching, restoring OAuth authentication stability and enabling horizontal scaling on AWS EKS.
- Containerized and deployed a .NET government web application to AWS EKS / Windows IIS, resolving 20+ Linux containerization issues including Windows-only library incompatibilities, PostgreSQL casting failures and OAuth session conflicts across government agencies handling sensitive records.
- Kubernetes
- AWS EKS
- .NET
- PostgreSQL
- IIS
Oct 2024 – Feb 2025'24 10 → '25 02
TEDxUB25
Backend Developer, event platform
Malang · Volunteer · Remote
Independent TED event at Universitas Brawijaya.
- Shipped 10 Go APIs with GitHub Actions deploys and Grafana + Loki monitoring.
- K3s cluster with zero downtime through the live event: 148 orders, 224 tickets.
- Developed and deployed 10 backend APIs using Golang (Echo, sqlx, PostgreSQL) with automated deployment and real-time monitoring via GitHub Workflow, Grafana and Loki.
- Architected a Kubernetes cluster using K3s for backend deployment and a PostgreSQL StatefulSet, enabling rolling updates that ensured zero downtime throughout the live event serving 148 orders and 224 tickets sold.
- Go
- Echo
- PostgreSQL
- K3s
- GitHub Actions
- Grafana
- Loki
May 2024 – Oct 2024'24 05 → '24 10
HOLOGY UB 7
Lead Backend Engineer, event platform
Malang · Volunteer · Hybrid
National tech competition by Universitas Brawijaya.
- Led 2 engineers on a Go API that held 2,700+ concurrent users and 850+ teams.
- 60 documented endpoints with 90%+ coverage across 300+ unit tests.
- Led a backend team of 2 engineers to build a high-concurrency Golang API using Gin, GORM and PostgreSQL, handling 2,700+ concurrent users and 850+ teams during peak event traffic.
- Designed the database schema, 25 use cases and 60 API endpoints (Swagger documented) while maintaining 90%+ test coverage on 300+ unit and 10 integration tests.
- Implemented CI/CD with GitHub Actions, observability via Grafana & Prometheus, and integrated Google OAuth, Redis, Firebase Storage and Gmail SMTP for authentication, caching, storage and notifications.
- Go
- Gin
- PostgreSQL
- Redis
- Firebase
- GitHub Actions
- Grafana
- Prometheus
- Swagger

Loki
Prometheus
Grafana
GitHub Actions
Linux
Proxmox
Firebase
Ansible
Terraform
AWS Glue
CloudFormation
AWS
K3s
Kubernetes
Docker
Supabase
Redis
MySQL
Snowflake
PostgreSQL
TanStack Start
Next.js
Express
Echo
Gin
Laravel
.NET
C++
Kotlin
Java
PHP
Python
JavaScript
TypeScript
C#
Go

Tooling

The Kit

tap one: every sticker comes with receipts

tap a sticker → see where I used it

01Languages

Go, C#, TypeScript

02Frameworks

Laravel, .NET, Next

03Data

Postgres, Snowflake

04Infra

AWS, Kubernetes

Learning
Teaching
Sharing
Nurturing
Learning
Teaching
Sharing
Nurturing
Learning
Teaching
Sharing
Nurturing

Sharing

Teaching & Others

flyers from the notice board

Sep – Oct 2025

90+students

Server admin instructor

SMKN 5 Malang

Taught Debian, OpenSSH and Nginx to 90+ vocational students.
Provisioned the class lab with Terraform on Proxmox VE (10 LXC containers + IAM).
Deployed Nginx study materials (static site and web app) with Ansible.

Feb – Dec 2024

160students

Lab instructor

FILKOM UB

Taught OS, Java OOP, PHP/Laravel and networking to 160 students.
Wrote lab modules and ran midterm and final practicum exams.

Jan – Dec 2024

12people led

Head of competitive programming

BCC FILKOM UB

Ran 7 workshops on competitive programming and Docker.
Wrote 20 problem sets in C++, Python and Bash.
Deployed DOMjudge to a VPS with Ansible and Docker.
Led 17 staff and co-organized CodEx with POROS FILKOM for 160 participants.

Student ID / Education

Universitas Brawijaya

B.IT, Faculty of Computer Science

Years: 2022 – 2026
GPA: 3.79

Certified

Oracle Database Design · 2024
Oracle Database Programming with SQL · 2024

Learning

Side Projects

built after hours, all on GitHub

Contest infra2024
BCC Contest Infra
The setups that run BCC FILKOM’s programming contests.
A simplified Judgels deployment on Docker Compose (single VM, or a core VM plus N grader VMs), a DOMjudge Docker setup with judgehosts and an Ansible path, and a Python script that bulk-inserts contest users into DOMjudge.
- Docker
- Ansible
- Python
- Linux
- MySQL
Thesis2026
TelNetQuiz
A network-engineering quiz app for vocational students, plus the CMS behind it.
Android app in Kotlin. The CMS and API run on TanStack Start with React 19, Drizzle and Effect-TS over Supabase PostgreSQL, with a FastAPI service that turns study material into Indonesian speech.
- Kotlin
- TypeScript
- TanStack Start
- Supabase
- PostgreSQL
- Python
- Docker
- Android app ↗
- CMS + API ↗
Teaching infra2025
NCE NSA Lab
One run gives every student group its own Linux server.
Terraform creates an LXC container, a user and a restricted role per group on Proxmox VE. Ansible then installs PHP, Nginx and MariaDB and deploys the Laravel and static study sites. Built for the SMKN 5 Malang server administration course.
- Terraform
- Ansible
- Proxmox
- Linux
- PHP
- smkn5-nce-nsa-lab ↗
Campus tool2025
RateMyUBProf
RateMyProfessors, but for Universitas Brawijaya.
Students rate and review lecturers before picking classes. Go backend in clean architecture with PostgreSQL and RabbitMQ, and a Next.js 15 client.
- Go
- PostgreSQL
- RabbitMQ
- Next.js
- TypeScript
- Docker
- Kubernetes
- Backend ↗
- Client ↗
E-course2024
TELS E-Course
An online course platform built for vocational school students.
Laravel app with an admin side for managing course material and a student side for learning, on MySQL with Firebase.
- Laravel
- PHP
- MySQL
- Firebase
- tels-e-course ↗
Campus tool2022
Find Your Rabraw22 Certificate
Helped UB class of 2022 find their Rabraw certificate.
A small static site: type your full name and faculty, get your certificate.
- JavaScript
- HTML
- Bootstrap
- Live site ↗
- Repo ↗