# Senior Software Engineer

**Company:** [OPSWAT](https://hotfix.jobs/companies/opswat)
**Location:** Ho Chi Minh City, Vietnam
**Role:** Backend Engineering
**Experience:** 5+ years
**Skills:** C++, Rust, Java, C#, TCP/IP, Http, Icap, REST APIs, Multithreading, Network Programming, Claude Code, Git, Postgres
**Posted:** 2026-08-16

> Build and test a high-concurrency C++ or Rust transparent proxy that routes uploads through MetaDefender Core for sanitization. The role requires strong object-oriented programming, networking, multithreading, debugging, and interest in AI-assisted development.

## Job Description

## Responsibilities
- Design, build, and test SFG in **C++** or **Rust** for Windows/Linux as a transparent proxy between WAF and backend systems.
- Implement the core flow: intercept uploads, forward them to MetaDefender Core over **ICAP**, and return sanitized files with low latency and high reliability.
- Build multi-threaded, high-concurrency networking components.
- Build and use agentic workflows, including Claude Code and autonomous coding agents, for coding, testing, and debugging.
- Work within a Scrum team, collaborate with Product Management, and conduct peer code reviews.

## Requirements
- Strong object-oriented programming background in **Java** or **C#**, with willingness to learn or work in C++ or Rust.
- Solid multithreading and network programming skills.
- Knowledge of protocol and network-level concepts, including **TCP/IP**, **HTTP**, and proxying.
- Genuine interest in using AI tools in the development workflow.
- Experience building or using multi-agent systems.
- Strong coding and debugging skills, communication skills, and self-motivation.

## Nice to Have
- **ICAP** protocol experience.
- Reverse proxy or gateway experience.
- **REST API** design.
- Agile/Scrum experience.
- **Git**, **Bitbucket**, **Jira**, **Confluence**, and **TeamCity**.
- **SQLite**, **PostgreSQL**, or other DBMS experience.
- Windows/Linux development experience.

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**Apply:** https://hotfix.jobs/jobs/27bceb84-581a-440d-907e-b7347bc44591
**Canonical:** https://hotfix.jobs/jobs/27bceb84-581a-440d-907e-b7347bc44591