Quant Systems Developer
J. Ramlee , W.P. Kuala Lumpur
|Hybrid
|Contract
J. Ramlee, W.P. Kuala Lumpur
|Hybrid
|Contract
Job ID 8196|Posted May 13, 2026
JOB DESCRIPTION
Quant Systems Developer
Kuala Lumpur
About Horizontal: Established since 2003 in the US, Horizontal solves complex challenges across two distinct businesses: Horizontal Digital and Horizontal Talent. We are consistently recognized for being a top workplace and one of the fastest-growing private companies. Horizontal Talent specializes in staffing for IT, Digital & Creative, and Business & Strategy markets. We have global offices in the US, UAE, India, Malaysia and Australia.
Job Summary:
We are seeking a highly skilled Low Latency Quant Systems Developer to design, build, and optimize mid- to high-frequency trading systems for US equities and cryptocurrency markets. The ideal candidate will have deep expertise in C++, experience with ultra-low latency architectures, and a proven track record in real-time market data handling, execution systems, and high-performance computing for trading applications.
This is a hands-on engineering role, working closely with quant researchers, traders, and infrastructure engineers to deliver production-grade trading systems that operate at scale with microsecond-level latency.
Key Responsibilities:
Design & Develop:
Key Requirements:
Nice to have:
The above description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.
Kuala Lumpur
About Horizontal: Established since 2003 in the US, Horizontal solves complex challenges across two distinct businesses: Horizontal Digital and Horizontal Talent. We are consistently recognized for being a top workplace and one of the fastest-growing private companies. Horizontal Talent specializes in staffing for IT, Digital & Creative, and Business & Strategy markets. We have global offices in the US, UAE, India, Malaysia and Australia.
Job Summary:
We are seeking a highly skilled Low Latency Quant Systems Developer to design, build, and optimize mid- to high-frequency trading systems for US equities and cryptocurrency markets. The ideal candidate will have deep expertise in C++, experience with ultra-low latency architectures, and a proven track record in real-time market data handling, execution systems, and high-performance computing for trading applications.
This is a hands-on engineering role, working closely with quant researchers, traders, and infrastructure engineers to deliver production-grade trading systems that operate at scale with microsecond-level latency.
Key Responsibilities:
Design & Develop:
- Build ultra-low latency trading systems using modern C++ (C++17/20) for US equities and crypto markets.
- Implement efficient market data handlers, order execution gateways, and risk control modules.
- Develop back testing and simulation frameworks to support quant research and strategy development.
- Profile and tune code for sub-millisecond performance and high throughput.
- Minimize network, kernel, and serialization overheads in critical execution paths.
- Optimize order routing and feed handling for multiple venues and protocols (e.g., FIX, native APIs, WebSocket).
- Partner with quant researchers to integrate trading strategies into
- production systems.
- Work closely with infrastructure teams on bare-metal deployments, low-latency networking, and time synchronization (e.g., PTP).
- Build robust fault-tolerant systems with real-time logging, monitoring, and alerting.
- Ensure high availability and disaster recovery mechanisms.
- Work timing needs to cater to US trading hours (3pm to 12am malaysia time)
Key Requirements:
- Bachelor’s/Master’s in Computer Science, Electrical Engineering, or related field.
- 3–7 years of experience in low-latency trading systems or HPC environments.
- Expert-level C++17/20 programming, including multi-threading, lockfree data structures, and template metaprogramming.
- Experience with low-latency optimizations (NUMA, kernel bypass, RDMA, DPDK, TCP/UDP tuning).
- Strong understanding of market microstructure for US equities and crypto venues.
- Familiarity with market data protocols (ITCH, OUCH, FIX, WebSocket APIs) and exchange-specific APIs.
- Experience with real-time data processing and event-driven architectures.
- Understanding of mid/high-frequency trading strategies, order types, and execution algorithms.
- Familiarity with risk management and position tracking in real time.
- Proficiency in Linux systems programming and network programming.
- Experience with build systems (CMake, Bazel), profilers, and debuggers (gperf, perf, valgrind).
- Knowledge of cloud-native and on-prem deployments is a plus.
Nice to have:
- GPU acceleration (CUDA) or FPGA programming for ultra-low latency strategies.
- Experience with Python for data analysis or integration scripts.
- Knowledge of cryptography and blockchain protocols for crypto execution systems.
- Exposure to distributed systems and microservices architectures.
The above description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.
Horizontal is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, veteran status, or any other protected characteristic under applicable law.
Horizontal is committed to taking affirmative action to employ and advance in employment qualified individuals with disabilities and protected veterans. If you are an individual with a disability and require a reasonable accommodation to complete any part of the application process or participate in the interview process, click here to request accommodation assistance.
All applicants applying must be legally authorized to work in the country of employment.
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