Software Engineer in Test (SDET) (Fintech)

TL;DR

Software Engineer in Test (SDET) (Fintech): Building Python-first frameworks and C++-adjacent hooks to verify distributed systems correctness, accelerate CI/CD, and protect latency-sensitive releases across equities and options with an accent on automated testing, performance, and reliability. Focus on designing performance/latency test rigs, creating contract tests and service virtualization, and driving cross-repo test architecture to improve coverage and reliability.

Location: Onsite in New York

Salary: $175,000–$350,000

Company

hirify.global is a technology-driven, next-generation global market maker providing liquidity, competitive pricing, and seamless execution in a broad array of financial products.

What you will do

• Build test harnesses that simulate client/exchange and OMS order lifecycle workflows across equities cash and options.
• Author automated tests (unit/integration/contract/perf) and grow CI/CD quality gates, making runs deterministic.
• Design performance/latency test rigs with reproducible results and automatic regression gates in CI.
• Create contract tests and service virtualization to decouple teams and speed releases.
• Develop failure-mode/chaos scenarios (disconnects, throttling, slow consumers, sequence resets, clock skew, backpressure).
• Drive cross-repo test architecture/refactors to improve coverage and reliability.
• Partner with development, SRE, and the trading desk to define and automate end-to-end scenarios.

Requirements

• Proven ownership mindset: comfortable debugging unfamiliar systems, writing docs, and driving cross-team initiatives.
• Expert Python for production-grade automation.
• Ability to read/modify C++ test code and hook Python harnesses into C++ components.
• Strong Linux and networking fundamentals (TCP/UDP, sockets, pcap/Wireshark).
• CI/CD experience (Jenkins/GitHub Actions, Git, CMake) with containerized, reproducible test environments.
• Hands-on design of performance/reliability tests (latency, throughput, backpressure) and flaky-test triage.
• English: B2 required

Nice to have

• FIX engine experience (QuickFIX or proprietary), exchange simulators, OMS/EMS flows, DMA/algos, drop copy.
• Observability for tests (Prometheus/Grafana/Jaeger/Tempo; log correlation).
• Data & infra: kdb+/q, Kafka, low-latency instrumentation.
• Rust/Go or FP exposure (Haskell/OCaml); contract testing (Pact) and property-based testing (Hypothesis).
• Prior experience in financial systems or large-scale distributed environments.

Culture & Benefits

• Opportunity to participate in a discretionary incentive compensation program.
• Access to a wide array of benefit programs, such as medical and life insurance, retirement and tax-free savings plans, and other healthcare programs.
• Contribute to a multi-year strategic effort to modernize the core client platform infrastructure.