Arindam Paul is a senior exchange connectivity engineer who has owned the full connectivity stack — protocols, market data, order routing, and session management — for one of the world's most active options market makers.
Most engineers touch a handful of exchanges. Arindam Paul has owned connectivity to more than ninety. At IMC Financial Markets — one of the world's leading options market makers — he built and maintained the full exchange connectivity stack across equities, options, futures, and ETF markets in Europe, Asia-Pacific, and the Americas.
This is not integration work. It is ownership: protocol implementation from scratch, feed handlers, session management, order routing, market data normalization, and the continuous maintenance cycle as exchanges upgrade, migrate, and roll out new protocol versions. When a venue changes its binary protocol at 3 a.m. Sydney time, someone has to be ready. For eight years, that was Arindam.
Exchange connectivity at this scale requires command of a wide protocol landscape. Arindam's implementation experience spans the full range of standards used across global capital markets.
On the order routing side: FIX 4.2, 4.4, and 5.0 across dozens of venues; CME iLink 3 for US futures; proprietary binary OMS protocols for Asian and Middle Eastern exchanges including SGX, HKEX, ADX, and Tadawul. On the market data side: CME MDP 3.0, NASDAQ ITCH 5.0, NYSE Pillar, and the full suite of European feed formats from Euronext, Deutsche Boerse, and ICE.
Beyond the headline protocols, exchange connectivity at IMC's scale means building the infrastructure that sits around the protocol: low-latency session heartbeat management, sequence number recovery, TCP and UDP multicast feed handling, gap detection, retransmission logic, and the market data normalization pipelines that turn raw exchange feeds into a unified internal representation. Each of these subsystems is a discipline in its own right.
IMC's footprint spans three continents and every major trading timezone. Arindam has built and maintained connectivity to venues in the United States (CME, CBOE, NASDAQ, NYSE, ICE), Europe (Euronext Amsterdam, Euronext Paris, Euronext London, Deutsche Boerse Xetra, Eurex, LSEG), Asia-Pacific (SGX, HKEX, ASX, TOCOM, OSE), and the Middle East (ADX, Tadawul, DFM). Each region has its own regulatory environment, co-location facilities, network topology, and protocol quirks.
Cross-timezone ownership means more than technical coverage. It means understanding the operational rhythm of each venue: scheduled maintenance windows, quarterly protocol upgrades, expiry handling, and the tail of edge cases that only surface under live market conditions. Arindam has navigated all of it.
Alongside order routing, Arindam owns the market data layer: the feed handlers, normalization pipelines, and distribution infrastructure that deliver consolidated market data to IMC's trading strategies at sub-millisecond latency. This includes both top-of-book and full depth-of-book feeds, options chain reconstruction, and the aggregation of multi-venue data into a coherent internal market view used by pricing and risk systems.
Feed handler performance is measured in microseconds. Arindam's implementations use zero-copy buffer patterns, CPU-affinity-aware threading, and lock-free ring buffer architectures to minimize jitter and maintain consistent sub-millisecond processing across sustained high-throughput periods.
For a detailed account of the engineering behind IMC's exchange connectivity infrastructure — latency budgets, ring buffer architecture, and the systems design choices that make sub-millisecond round-trips possible at scale — read The Architecture of Speed.
To explore the full scope of Arindam's role at IMC Financial Markets, including the broader trading systems context, visit the IMC experience page.
Available for Exchange Connectivity Roles
Arindam is open to senior and principal exchange connectivity engineering roles, head of connectivity positions, and embedded technical leadership engagements at trading firms and market makers. Target geographies include Singapore, Hong Kong, Dubai, and New York. See hiring details or discuss an engagement.