Senior Full Stack Engineer

Send; Johor Bahru; On-site; MYR 150,000 - 210,000; Full time

Job summary

Send is a community-first tech startup building smart, inclusive solutions for everyday businesses in Malaysia. You will own features across the frontend and backend, guiding technical decisions and delivering reliable software.

Responsibilities include building React/Next.js interfaces, implementing C#/.NET backend APIs, and ensuring secure, scalable order and payment flows. You will mentor engineers, review code, and collaborate with product and QA to ship high-quality features.

Qualifications

• Ownership of production web applications spanning frontend and backend.
• Strong production experience with React, Next.js, and TypeScript, including client and server rendering, forms, and API state management.
• Hands-on backend with C# and .NET, REST APIs, relational databases, and SQL.
• Understanding authentication, server-side authorization, secure session handling, and data protection.
• Ability to write unit, integration, and end-to-end tests and troubleshoot failures.
• Experience with Git, code review, CI/CD, and cross-functional delivery.
• Clear communication and mentoring with explicit tradeoffs.
• Ability to use AI tools to improve productivity and guide team; evaluate designs, refactor code, prepare tests and docs.
• Ability to provide clear AI context, review outputs, and explain improvements; protect code and credentials per policy.

Responsibilities

• Own features from requirement clarification and design through implementation, testing, release, and production follow-up.
• Build responsive, accessible interfaces with React, Next.js, and TypeScript, including forms, state management, loading states, and error recovery.
• Implement backend functionality and API integrations using C# and .NET, working with backend engineers on contracts and data consistency.
• Design reliable order and payment journeys, including duplicate submissions, delayed responses, and failure recovery.
• Improve performance, security, automated tests, CI, and release readiness.
• Review code, explain architectural tradeoffs, mentor engineers, and coordinate dependencies with product and QA.

Skills

React

Next.js

TypeScript

C#

.NET

SQL

REST APIs

Security

Testing

Mentoring

AI productivity

Tools

Git

CI/CD

AWS

Docker

TanStack Query

Jotai

Claude

OpenAI tools

Job description

Company Description

Send is a community-first tech startup building smart, inclusive solutions for everyday businesses. Our growing ecosystem includes SendFood (Food delivery), SendLive (Livestream commerce), and SendSocial (Community)—tools designed to empower our local community and to connect lives.At Send, we’re not just building products—we’re building bridges between tradition and technology. Our mission is to make digital tools accessible, culturally relevant, and meaningful for those often left behind in the digital shift.

The role

Help build and improve Send Services web products. You will own complex features across the frontend and backend, guide technical decisions, and help the team deliver reliable, maintainable software.

Responsibilities

• Own features from requirement clarification and design through implementation, testing, release, and production follow-up.
• Build responsive, accessible interfaces with React, Next.js, and TypeScript, including forms, state management, loading states, and error recovery.
• Implement backend functionality and API integrations using C# and .NET, working with backend engineers on contracts and data consistency.
• Design reliable order and payment journeys, including duplicate submissions, delayed responses, and failure recovery.
• Improve performance, security, automated tests, CI, and release readiness.
• Review code, explain architectural tradeoffs, mentor engineers, and coordinate dependencies with product and QA.

Required qualifications

• Demonstrated ownership of production web applications and complex features spanning frontend and backend.
• Strong production experience with React, Next.js, and TypeScript, including client and server rendering, forms, and API state management.
• Hands-on backend implementation with C# and .NET, REST APIs, relational databases, and SQL.
• Understanding of authentication, server-side authorization, secure session handling, and protection of sensitive data.
• Ability to write meaningful unit, integration, and end-to-end tests and troubleshoot production failures.
• Experience with Git, code review, CI/CD, and cross-functional delivery.
• Clear communication and evidence of mentoring and making technical decisions with explicit tradeoffs.
• Ability to use AI tools such as Claude and OpenAI products to improve work productivity: evaluate design alternatives, develop and refactor frontend and backend code, debug issues, and prepare tests and documentation; able to guide the team in effective AI use.
• Ability to provide clear context and instructions to AI, critically review and test its output, and explain resulting improvements in turnaround time or quality. Retain responsibility for the final work and protect code, credentials, and confidential data in line with company policy.

Preferred qualifications

• E-commerce, food ordering, checkout, payments, or external service integrations.
• AWS, Docker, web performance, accessibility, and observability.
• Tailwind CSS, TanStack Query, Jotai, or equivalent tools.

Success in this role

You independently lead complex delivery, improve the quality of shared code, and help other engineers make sound decisions. Features remain observable and supportable after release.