Senior/Tech lead .NET

Location: Ha Noi, Hà Nội, Vietnam

Workplace: hybrid

Employment Type: full

Description

YOUR MAIN MISSIONS

• Develop and maintain a platform for KYC & Investigation purposes.
• Own initiatives end-to-end: clarify requirements, propose solutions, develop, release, and operate.
• Lead Junior Engineers by providing technical direction, task breakdown/estimation, code reviews, mentoring, and onboarding.
• Stay hands-on with C#/.NET Core, TypeScript, and React; troubleshoot defects, production incidents, performance issues, and technical debt.
• Design and work with event-driven architecture, queues, and asynchronous processing.
• Collaborate with the Architecture team to build scalable systems.
• Ensure testing, observability, security, CI/CD, and IaC for application-related AWS infrastructure.
• Participate in sprint planning, stand-ups, retrospectives, and technical documentation; leverage AI tools such as Claude Code throughout the SDLC.

CANDIDATE PROFILE

• 5–7 years of Software Engineering experience, including 1–2 years of leading or mentoring Junior Engineers.
• Strong experience with C#/.NET Core + TypeScript/React.
• Experience with MS SQL Server and relational database design.
• Experience with event-driven architecture, queues, asynchronous processing, and failure modes.
• Experience with Infrastructure-as-Code: Terraform / AWS CDK / CloudFormation.
• Proven experience owning major initiatives from scoping to release, with a strong production mindset around testing, observability, security, and CI/CD.
• Strong product mindset, proactive in shaping scope, with solid knowledge of Data Structures & Algorithms.
• Proficient in Git and collaborative development workflows, with the ability to work effectively with an existing codebase.
• Strong communication skills, with the ability to mentor Junior Engineers and a willingness to learn.
• Nice to have: AWS Certified Solutions Architect – Associate; experience with MongoDB / DocumentDB / DynamoDB

WHAT WE OFFER

OPPORTUNITIES AND CHALLENGES

• Opportunity to work in a professional, modern and energizing setting.
• Challenging projects, possibilities, cutting-edge technology, and problems.
• An open and dynamic working atmosphere that promotes the interchange of ideas, while also empowering you to work and create in your own style. Each employee's talent and accomplishments are valued, and outstanding employees are recognized and rewarded on a yearly basis.
• Opportunities for capacity development, as well as assistance with professional certification expenses, are available to those who work in the field (1 million - 5 million).
• Some advanced certifications will cover the full cost of studying and taking the exam.

ATTRACTIVE REWARDING POLICY AND WORK-LIFE BALANCE

• Review salary 1-2 times/year, with the possibility of an unexpected salary rise based on capacity an infinite number of times per year
• Policy for 13th-Month Salary Bonus and Holiday Bonuses According to Company Regulations.
• Holiday travel mode (package 5-7 million/person), team building,...
• Full participation in social insurance, as well as a yearly health checkup at a reputable hospital.
• Comprehensive visit policy for personnel and relatives: birthday, marriage, childbirth, illness, etc.
• The football club, cycling car, badminton, ... are just a few of the sports and cultural activities available.
• Allowance for classes and training awards: Learning Star of the Month,
• A chance to be the face of the year's study, the royalties.