Senior Backend Engineer · .NET · Cloud Systems

Not a prototype. A production system.

I build the invisible parts people notice only when they fail—APIs, queues, payments, rewards, data, and the infrastructure holding them together.

01 / RANGE
7
Countries served
02 / SCALE
70+
Outlets on one platform
03 / LIVE
Real‑time
Queue operations
04 / MODE
E2E
Design to production

01 Production evidence

No mockups.
Systems in use.

Selected platforms built, shipped, and kept running after launch.

002

kcutsGOCodigo.co · Backend & Infrastructure

Backend engineering across customer and stylist apps, CRM, franchisee operations, payments, loyalty, queue workflows, and multi-outlet dashboards for a large salon platform in Singapore.

70+ outlets.NET / AWSQueue operations

003

DON DON DONKICodigo.co · Maintenance & Features

Ongoing backend maintenance and feature delivery for a mobile rewards platform operating across seven markets—membership, dMiles, coupons, promotion engines, and push workflows.

7 markets.NET / AzureRewards platform

004

RenoNationCodigo.co · Backend Engineering

Platform APIs and data workflows for a Singapore renovation marketplace connecting homeowners with designers and contractors through discovery, quotes, reviews, and project enquiries.

Marketplace.NET / AWSSearch & matching

005

FlowFreelance · Backend & Cloud

Backend services and AWS infrastructure for a music platform with streaming, karaoke, premium subscriptions, payments, and production operations.

Music platform.NET / AWSPayments

006

RezervContract secondment · Feature delivery

Feature delivery for a multi-tenant SaaS platform used by studios, gyms, wellness businesses, and sports facilities across Southeast Asia.

Multi-tenant SaaS.NET APIsBooking systems

02 Operating model

I build the part behind the product.

The visible feature is only the request. The engineering lives in everything that must remain true before, during, and after it runs.

01

Rules that stay true.

Backend systems: domain modelling, APIs, relational data, caching, background processing, integrations, authorization, and the invariants that prevent the product from contradicting itself.

02

Cloud without theatre.

Infrastructure: containers, databases, queues, secrets, delivery pipelines, observability, and scaling choices shaped by the workload—not by whatever looks impressive in a diagram.

03

Still understandable later.

Production stewardship: maintenance, incidents, migrations, performance tuning, feature evolution, and leaving enough clarity that the next engineer can move without guessing.

Engineering philosophy / Soe Thiha

“I don't write code that works. I design systems that survive — traffic spikes, infrastructure failures, 3am incidents, and team turnover. The measure of good infrastructure isn't that it runs. It's that it runs without you.”

Soe Thiha · Engineering Philosophy

03 Experience

Built in production. Learned in production.

Consumer apps, operational platforms, rewards engines, marketplaces, booking systems, and the infrastructure beneath them.

Senior Backend Engineer

Codigo.co

Backend and cloud infrastructure engineering across consumer apps and enterprise platforms. Architecture, delivery, AWS operations, performance, production maintenance, and feature evolution across multiple live products.

Assistant Lead, Backend

Thetys Co., Ltd

Designed backend services, improved database performance, supported engineering delivery, and helped move business systems from implementation into reliable production use.

Web Developer

Thetys Co., Ltd

Built MVC applications and REST APIs end to end, including deployment, maintenance, integrations, and performance improvements.

04 Runtime manifest

The tools are replaceable. The judgement is not.

My primary environment is .NET and AWS. I choose the surrounding services by operational fit, not by attachment to a stack.

backendC# · .NET · ASP.NET Core · EF Core · REST APIs
asyncBackground Services · Hangfire · Queues · Scheduled Work
cloudAWS ECS · EC2 · Lambda · RDS · ElastiCache · S3
edge_securityCloudFront · Nginx · SES · Secrets Manager · KMS
dataPostgreSQL · MySQL · SQL Server · Redis · MongoDB
deliveryDocker · GitHub Actions · CI/CD · Terraform · production support

05 Contact

Bring me the system
people will depend on.