About Us We are a global institutional trading fi rm and the largest prop trading desk in India with a book size of more than INR 10000CR, with offices in GIFT City Ahmedabad, Surat, Rajkot, Dubai, Delhi, Jaipur and Gurgaon. We are members of all Indian and major global exchanges, with colocation access to most of them, including CME, Singapore, Brazil, Turkey. We’re building a new age high-frequency trading firm focused on options and equities across the globe. Our vision is to build a deeply technical, product-focused, and globally competitive firm — lean in size, but world-class in performance. About the Role We’re looking for a Senior infra engineer to lead and build the high frequency trading stack - someone with deep systems experience, not afraid of hard problems, and excited to own the entire pipeline. The role is for someone who can own the infrastructure end-to-end. You will lead the architecture, design, and execution of our HFT infra - from nanosecond-level market data handling to deterministic order execution. It’s a deeply technical, hands-on builder’s role. You will write production-grade code and work very closely with the traders, founders, and our small core engineering team. If you're already operating at top performance in your current role, and obsess over kernel configs and CPU cache behavior — this might be the place for you. What You’ll Do & Own ● Own and build the infra powering our ultra-low-latency trading platform, starting with co-located setups at Indian exchanges and then global exchanges. ● Architect and implement all system components. ● Profile and optimize system bottlenecks across the entire stack to reduce latency at every level: network stack, CPU affinity, memory layout, I/O, CPU cache hits, kernel bypass (DPDK/Solarflare/Mellanox), syscalls, NIC queues and tuning, NUMA layout, etc. ● Design and implement clean, maintainable, high-performance C++ code with deterministic performance under stress. ● Research and integrate best practices around co-lo deployments — BIOS tuning, hugepages, irqbalance, kernel configs, NIC tuning, and more. ● Contribute to all layers of backend systems including databases, APIs and applications. ● Scale team and culture - we want you to lead tech, not just write code. ● Attend and participate in leading trading events across the globe. What We’re Looking For ● 7+ years of hardcore experience working on low-latency systems at an HFT firm. ● Expertise in C++ with strong fundamentals in data structures, memory layout, and performance tuning. ● Deep knowledge of Linux internals — memory management, CPU affinity, thread scheduling, kernel bypass (DPDK, XDP, etc.) ● Strong debugging skills — you should be comfortable with perf, gdb, strace, tcpdump, flamegraphs, and more. ● Solid grasp of networking stacks — TCP/UDP, multicast, kernel bypass, PTP, jitter buffers, packet pacing, etc. ● Familiarity with Indian exchange protocols and international equivalents. ● Proven ability to take ownership and deliver in ambiguity. Nice-to-Haves ● Experience with FPGA integration (optional but a plus) ● Familiar with quant-infra pipelines, real-time risk, or execution optimization ● Background in low-latency telemetry & failure detection ● Experience optimizing real-time systems at the nanosecond level Mindset Fit ● High ownership and long-term orientation — you care about building something enduring ● You prefer tight, fast teams over large bureaucracies ● You want to work with people who are both technically sharp and mission-driven ● You understand trading is a performance business — precision matter What You Will Find Here ● A founding-level opportunity to build core tech that powers actual trading ● Close working relationships with founders and traders ● A performance-focused culture of builders ● Total ownership, real technical challenge, and massive upside if you deliver Compensation Above industry standard for exceptional candidates . Compensation includes a fixed salary + profit-linked performance incentives for the infra team.