Senior Software Engineer - AI Coding Tasks & Testing

Synthires; Hong Kong; On-site; HKD 2,649,000 - 3,028,000; Full time

Job summary

Synthires in Hong Kong seeks experienced Software Engineers for an AI training project to create realistic coding tasks and reliable evaluation systems. You’ll apply your software engineering expertise to help AI systems improve their ability to solve real-world programming problems.

No prior AI experience is required — your software engineering expertise is what matters. You will tackle tasks that test and strengthen backend systems, APIs, and automated tests across multiple languages.

Qualifications

• Strong backend experience with listed languages and APIs.
• Experience building scalable services and APIs.
• Strong debugging, performance optimization, and automated testing skills.
• Solid code review and software engineering judgment.
• Experience with testing strategies, flaky tests, or quality improvement.
• Strong understanding of algorithms and data structures.

Responsibilities

• Create realistic and challenging coding tasks involving feature implementation and bug fixes.
• Implement deterministic verifiers that accept valid solutions and reject incorrect ones.
• Debug, test, optimize, and refactor existing codebases.
• Design and maintain automated tests and reliable testing strategies.
• Identify performance bottlenecks, bugs, and system issues.
• Review code and evaluate technical solutions for quality and correctness.

Skills

Java

Node.js

Go

Rust

TypeScript

Python

C++

APIs

Debugging

Testing

Code review

Algorithms & DS

Job description

Synthires in Hong Kong seeks experienced Software Engineers for an AI training project to create realistic coding tasks and reliable evaluation systems. You’ll apply your software engineering expertise to help AI systems improve their ability to solve real-world programming problems.

No prior AI experience is required — your software engineering expertise is what matters. You will tackle tasks that test and strengthen backend systems, APIs, and automated tests across multiple languages.