Senior Software Engineer
Pak Shek Kok, New Territories•Full-time
HK$30,000 - HK$40,000 monthly
HK$30,000 - HK$40,000 monthly
About the Job
Position: (Senior) Software Engineer
We invite a dynamic and motivated individual to apply for the position. The job holder will report to the Chief Technology Officer/Senior Software Engineer.
Software Engineer (Systems & Networking)
About the Project:
The BATS Protocol is a sophisticated network protocol implementation focused on efficient data transport across networks. We are building a next-generation user-space transport protocol that delivers reliable, high-throughput transfers on real-world networks. We have a mature BATS coding/ decoding layer that supports various encoding/decoding methods and network optimizations. Our current focus is on improving transport mechanics—congestion control, error recovery, pacing and rate adaptation, flow control, and NAT traversal options—within a modular architecture that separates the control plane from the data plane and exposes clean APIs.
Role overview:
You will write system-level Rust on Linux for the BATS transport library and other product components — initial focus includes the file-transfer engine and an L3 tunnel, adopting modern engineering practices (Git branches/MR, code review, CI/CD, unit & integration tests, benchmarks). Prior transport-protocol stack experience is not required—you will learn with us, provided you have strong programming fundamentals and curiosity.
Key responsibilities:
- Implement and optimize Rust components in the BATS transport library and product modules (e.g., file-transfer engine, L3 tunnel), focusing on throughput/latency/CPU/memory.
- Implement new features; write unit/integration tests and maintain micro-benchmarks.
- Debug with Linux tools (logs, tcpdump/Wireshark) and basic profilers (perf, flamegraph); produce clear, reproducible findings.
- Participate in merge-request code reviews; follow CI gates; improve code quality incrementally.
- Write concise technical documentation (APIs, design notes, benchmark summaries).
Required skills & experience:
- Strong Rust or Go programming on Linux; good grasp of sockets fundamentals (UDP/TCP), concurrency (threads/async), and memory/ownership.
- Comfortable with modern SDLC: Git (branching + MR), code review, CI/CD, and unit/integration testing.
- Able to read metrics/logs and apply basic performance analysis on Linux.
- Growth mindset: willing to learn transport protocol internals and system performance techniques on the job.
Preferred skills:
- Exposure to transport ideas (congestion/windowing/pacing, FEC/coding), or tools like perf, flamegraph, tcpdump/Wireshark.
- Networked application patterns (HTTP/REST, WebSocket, or RPC frameworks) and container literacy (Docker).
Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Information Engineering, or a related discipline
- At least 3 years of working experience in software development
Work environment:
- Collaborative development in GitLab with MR-based workflow, coding standards, and continuous integration.
- Clear, pragmatic engineering practices; small team, high impact.
Interested candidates should submit code samples or links to GitHub repositories that demonstrate experience with C++ network programming.
About n-hop technologies
n-hop technologies is a leading technology company at the forefront of innovation in the field of data processing and network acceleration. We pioneered network coding theory and is the inventor of Batched Sparse Code (BATS), an efficient implementation of network coding. Our mission is to revolutionize the way data is processed, stored, and transmitted, empowering organizations to achieve unprecedented levels of performance, efficiency, and scalability.
We are the winner of some significant global awards and have been granted various patents (http://www.n-hop.com):
A. 2022 Claude E. Shannon Award – the highest honor in Information Theory
B. 2021 IEEE Richard W. Hamming Medal (Citation: For fundamental contributions to information theory and pioneering network coding and its applications)
C. 2019 Gold Medal with Congratulations from the Jury at the 47th International Exhibition of Invention of Geneva
D. 2018 ACM SIGMOBILE Test-of-Time Paper Award
We are the winner of some significant global awards and have been granted various patents (http://www.n-hop.com):
A. 2022 Claude E. Shannon Award – the highest honor in Information Theory
B. 2021 IEEE Richard W. Hamming Medal (Citation: For fundamental contributions to information theory and pioneering network coding and its applications)
C. 2019 Gold Medal with Congratulations from the Jury at the 47th International Exhibition of Invention of Geneva
D. 2018 ACM SIGMOBILE Test-of-Time Paper Award