.Net разработчик (криптобиржи)

Компания "Heaad"

Находимся в поисках ведущего разработчика на разработку криптобиржи. Рассматриваются разработчики исключительно с опытом в криптосфере (на .NET).
Тип трудоустройства готовы обсуждать с кажым кандидатов индивидуально (ТК, ИП, смз, ГПХ)
Вилка зп от 7000$ на руки (зависит от опыта)

Описание вакансии:
We’re looking for an Expert Backend Engineer who operates at the level where “latency,”
“determinism,” and “predictability” aren’t buzzwords but measurable engineering constraints.
This role is for someone who deeply understands CPU internals, memory models, thread
scheduling, lock-free algorithms, high-throughput messaging, and how distributed financial
systems fail under pressure.
You will own critical infrastructure that must function flawlessly at hundreds of thousands
to millions of events per second, with strict correctness and guaranteed ordering.
This role is not for application developers — it is for systems engineers building financial
infrastructure.
Responsibilities
Low-Level Engineering & System Design
● Implement ultra-low-latency backend components with predictable CPU/memory
behavior.
● Design algorithms and data structures optimized for microsecond-level execution and
zero avoidable allocations.
● Implement lock-free or wait-free concurrency patterns, high-performance ring
buffers, and custom in-memory indexes.
● Optimize every layer of the system: CPU cache usage, batching strategies, network
payload formats, serialization overhead.
Performance & Throughput
● Own performance budgets for critical paths: routing → validation → matching →
persistence.
● Conduct deep-dive profiling: CPU cycles, GC pauses, kernel scheduling anomalies,
NIC throughput, syscall overhead.
● Design deterministic pipelines capable of sustaining constant high load without tail
latency degradation.
Fault Tolerance & Recoverability
● Build systems with strict correctness guarantees, atomic event application, and
deterministic replay mechanisms.
● Ensure subsystem isolation: a degraded component must never impact core trading
flows.
● Implement safety nets: circuit breakers, enqueue limits, backpressure, isolation
pools, and bounded resource usage.
Security & Data Integrity
● Own low-level API security: deterministic signature checks, replay protection, rate
limiting by bucket/token algorithms.
● Ensure full auditability of every financial operation with immutable logs and exact
ordering guarantees.
Operational Ownership
● Lead incident investigations at the kernel/network/runtime level.
● Define and enforce operational SLOs and deterministic recovery procedures.
● Ensure all systems degrade gracefully and recover predictably.
Requirements
● 8+ years in backend/system engineering with .NET/C# or similar low-level languages.
● Mastery of:
○ CPU cache mechanics, cache lines, branch prediction, false sharing
○ Memory models & volatile/atomic operations
○ Lock-free algorithms, concurrent queues, ring buffers
○ TCP internals, congestion control, NIC queues, syscalls
● Experience building systems where 1ms can be unacceptable and correctness is
absolute.
● Deep experience with:
○ High-throughput streaming systems (Kafka, NATS, Redpanda)
○ Deterministic processing pipelines
○ Real-time financial systems, betting engines, HFT systems, trading gateways
● Ability to reason rigorously about failure modes and system safety.
Nice to Have
● Experience building matching engines, FIX engines, or market data gateways.
● Knowledge of NUMA optimization, kernel bypass, RDMA, or high-performance
networking techniques.
● Experience designing event-sourcing or replay-driven trading systems.

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