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Hamed YousefiHY
Open to opportunities

Hamed Yousefi

@hamedyousefi

Senior Go developer at Polymarket who cut matching latency 100x and builds financial and crypto systems.

United Arab Emirates
Message

At Polymarket, I reduced worst-case matching latency from about 500 ms to about 5 ms by optimizing execution pipelines and hot-path data structures. I also designed and initiated a horizontally scalable, sharded matching engine for the CLOB platform.

At Brahma, I led backend development of Brahma Cards, integrating Sumsub for KYC and Rain for card management and crypto payments. I also built multichain transaction relaying, account authorization, and automation systems.

At Nanos Payment (Genesis Wealth), I helped design and build a cryptocurrency exchange end to end, including its Order Matching Engine and Transactions service. I led six Go engineers and made technical decisions across system design and delivery.

At TrialBlaze, I designed and built a compute engine for trial-staff entitlements and a workflow manager for contract approvals, while leading three Go developers. My open-source Go projects include Ethereum staking workflows, deterministic simulation testing, and an EVM indexing framework.

Experience

Work history, roles, and key accomplishments

Polymarket logoPO
Current

Senior Platform Engineer

Sep 2025 - Present (1 year 2 months)

Lead performance engineering and architectural redesign of the matching engine behind a trading system with 2M+ concurrent users and 80K+ RPS. Reduced worst-case end-to-end matching latency from ~500 ms to ~5 ms (100x) and designed a horizontally scalable, sharded matching engine.

Brahma logoBR

Senior Golang Developer

Brahma

Jun 2023 - Aug 2025 (2 years 2 months)

Led backend development of Brahma Cards, integrating Sumsub for KYC and Rain for card management and crypto payments. Built a multichain relayer, authentication layer, policy engine, automation engine, and real-time WebSocket service.

B2Broker logoBB

Senior Golang Developer

B2Broker

Jan 2023 - Jun 2023 (5 months)

Worked on a unified trading gateway connecting to multiple trading platforms including MatchTrader, MetaTrader, and cTrader. Built a gRPC API gateway and improved code quality and test coverage.

GogRPC
Kubernetes API
Operator SDK
PostgreSQLNATSRabbitMQ
NW

Golang Team Lead

Nanos Payment (Genesis Wealth)

Oct 2020 - Dec 2022 (2 years 2 months)

Designed and built a cryptocurrency exchange platform from scratch, including the Order Matching Engine, Transactions, and other core microservices. Led a team of six Go engineers and owned the system architecture.

Education

Degrees, certifications, and relevant coursework

University of Guilan logoUG

University of Guilan

Bachelor of Science, Computer Software Engineering

2011 - 2015

Bachelor of Science in Computer Software Engineering from the University of Guilan, completed in 2015.

Availability

Open to opportunities

Location

United Arab Emirates

Authorized to work in

Skills

GoFintechCryptocurrencyPayment SystemsCard Issuing
KYC Integration
Cryptocurrency Exchange
Order Matching Engines
Ethereum
Rewards Accounting
Reconciliations
Transaction Signing
RelayMicroservicesgRPC

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