Senior .NET Developer

Vietnam·Ho Chi Minh CityFulltimesenior

.Net DeveloperSoftware Engineering

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Quick Summary

Overview

ABOUT US: At Gradion, we are the strategic partner for ambitious businesses, helping them achieve breakthrough growth through Digital Innovation and Deep Tech.

Technical Tools

.Net DeveloperSoftware Engineering

At Gradion, we are the strategic partner for ambitious businesses, helping them achieve breakthrough growth through Digital Innovation and Deep Tech.

With a global vision and an AI-first approach, we enable clients to reshape strategies, optimize systems, and adopt cutting-edge technologies to create sustainable value.

From AI and data to cybersecurity, robotics, and large-scale enterprise platforms, Gradion designs practical solutions that lay the foundation for the next generation of billion-dollar companies.

23+ years of expertise - Gradion builds digital platforms & deep-tech solutions.
3 continents: Asia, Europe and Africa.
300+ specialists across 7 countries Vietnam, Singapore, Thailand, Saudi Arabia, Germany, Egypt, Indonesia.
100+ enterprise clients, including several unicorns (e.g., Alaiko, HomeToGo, Roadsurfer).
Vietnam's Best IT Company - recognized by ITViec for 8 consecutive years, including 2 consecutive years of ranking #1 (2024 and 2025).
ISO 27001.

About the Role

~5 min read

We are looking for a Senior .NET Developer to take full ownership of building a robust ERP platform that connects and integrates multiple retail systems for our client. You will be the primary engineer on the ground - working directly with the client's stakeholders and collaborating remotely with a broader cross-functional team. From architecture to deployment, you will drive the technical direction independently. This is a high-impact, high-autonomy role where strong engineering fundamentals, Web API expertise, and the ability to navigate complex integration challenges are essential.

Design, build, and maintain scalable .NET Core applications with a focus on clean architecture and high-quality code standards.

Develop and integrate Web APIs to connect multiple business systems and third-party service providers.

Contribute actively to system architecture and design decisions - proposing solutions, evaluating trade-offs, and driving technical direction.

Lead and conduct code reviews and code refactoring to uphold engineering standards across the team.

Plan, write, and document unit and integration tests to ensure software reliability.

Own the full development lifecycle: from planning and estimation through design, implementation, testing, deployment, and maintenance.

Take ownership of technical decisions and drive engineering best practices independently, without reliance on a local team structure.

Stay current with new technologies and actively bring relevant improvements into the team's workflow, including AI-assisted development practices.

5+ years of experience building cloud-based or distributed applications with .NET Core and Microsoft technologies.
Strong grasp of OOP, SOLID principles, clean/onion/hexagonal architecture, and design patterns; deep understanding of DDD, CQRS, and TDD.

Solid experience with Web API development and integration of multiple business systems and third-party APIs.

Hands-on experience with .NET Core, ASP.NET Core, MongoDB, and Message Queue systems; proven ability to optimize high-traffic web applications.

Sound understanding of .NET service lifetimes/scopes and database performance, including indexing strategies.

Experience developing and maintaining microservice architectures.

Comfortable working through system design and architecture questions - able to clarify assumptions, analyze trade-offs, and propose concrete solutions.

Proficiency with Git and experience in code review and refactoring practices

Able to work independently and take full ownership of delivery; comfortable collaborating remotely with client stakeholders and cross-functional teams across different time zones.

Practical experience with AI-assisted development tools and workflows (e.g., using AI for code generation, debugging, documentation, or structured development practices).

Good English communication skills - able to read technical documentation and collaborate with international stakeholders.

Nice-to-Have

Experience with Azure cloud services: Azure Functions, Service Bus, Azure SQL, Cosmos DB, Table Storage.

Familiarity with Docker and DevOps practices.

Knowledge of Kafka or RabbitMQ for event-driven messaging.

Basic knowledge of HTML, CSS, and JavaScript.

🏆 Join Vietnam's Best IT Company - Gradion Vietnam (formerly NFQ Vietnam) was recognized by ITViec for 8 consecutive years, including 2 successive years as the Winner. Work with some of the best minds in the industry and be part of a company that's redefining how businesses scale through technology.

🌍 Career Growth & Leadership Opportunities - At Gradion, your growth transcends job titles. Collaborate directly with our leadership team, receive mentorship from seasoned experts, and tackle real-world business challenges across tech, consulting, or operations. When you're ready to advance - whether as a specialist or leader - we're committed to fueling your success.

🚀 AI-First Innovation & Strategic Consulting - We're shaping a culture where AI is woven into how we think, create, and solve problems - not just a tool in our toolkit. With a consulting mindset, our teams deliver impactful, practical solutions that drive real value. Stay curious, think critically, and leverage AI to make a meaningful difference for clients and users.

💰 Competitive Compensation - We believe great talent deserves great rewards. Expect an attractive salary, performance-based bonuses, and a benefits package that reflects your impact. We value talent over salary budgets - exceptional contributions deserve exceptional rewards.

✨ And Many More Benefits to Explore! But most importantly, a healthy work-life balance and an environment where you can thrive - professionally and personally. Including:

A laptop is provided.
Community Tech activities.
A fun & dynamic environment and freedom to be creative.
Modern office with a flexible, relaxing zone.
Performance bonus (up to 2-month salary).
Performance review 2 times/year.
Extra Premium Healthcare & Annual Health-check.
15 days of annual leave.
Working time: Monday - Friday (9 AM - 6 PM)

Location:

Ho Chi Minh office: Podium Floor, Sapphire 2 Tower, 92 Nguyen Huu Canh Street, Thanh My Tay Ward, Ho Chi Minh City, Vietnam.
Da Nang office: 23rd Floor, G8 Golden Building, 65 Hai Phong, Hai Chau Ward, Da Nang City, Vietnam.
Remote Work: Candidates based in Hanoi or Can Tho are welcome to work remotely.

According to General Data Protection Regulation (GDPR), Singapore's Personal Data Protection Act (PDPA), and Vietnam's Decree 13/2023/ND-CP, while also ensuring compliance with other applicable local data protection laws in the jurisdictions where we operate, including but not limited to Vietnam, Thailand, Egypt, Singapore, Germany, and Saudi Arabia, Gradion applies the “Personal Data Protection Policy” to all candidates to ensure compliance with the laws.

By submitting your application to Gradion, you agree to allow us to process your provided information in accordance with the Personal Data Protection Policy that you have carefully read, understood, and agreed to in its entirety at Link.