{"id":1287247,"url":"https://alion.io/job/sohodragon-c-engineer","title":"C++ Engineer","company":{"id":3808079,"name":"Sohodragon","domain":"sohodragon.nyc","url":"https://alion.io/company/sohodragon","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Keka","truth_index":null},"role":"Hardware","role_family":"Hardware","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":200000,"max":220000,"currency":"GBP","period":"year","gross":null,"usd_annual":291433},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CMake","optional":false},{"name":"Git","optional":false},{"name":"PyTorch","optional":false},{"name":"PyTorch C++","optional":false},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-07-15T11:22:46Z","employer_posted_date":"2026-07-15","last_verified_at":"2026-09-26T10:02:02Z","board_verified":true,"closed_at":null,"days_open":74,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":74},"description":"We are looking for a C++ engineer to design and build high-performance, low-latency applications that process large volumes of real-time data. You will work on systems where microseconds and throughput matter, optimising every layer from algorithms and data structures to networking and OS interaction.\nKey Responsibilities\nDesign, implement, and maintain high-performance C++ services handling high message rates and low-latency workloads.\nOptimise existing components for latency, throughput, and CPU/memory efficiency.\nDevelop and tune networking, messaging, and I/O layers to handle large data volumes reliably.\nProfile and debug performance issues at application, OS, and network levels.\nCollaborate with quantitative, trading, and infrastructure teams (or analogous business/tech teams) to translate requirements into robust technical solutions.\nWrite clean, production-quality code with appropriate tests and documentation.\nParticipate in code reviews, design discussions, and continuous improvement of engineering practices.\nRequired Qualifications\nStrong proficiency in modern C++ (C++17/20 or later) 5+ years of experience\nAND must haveKDB / Q Experience for large market data\nModern data analysis with pytorch, pandas and modern tooling including Apache arrow\nFamiliar with basics statistics as applied to financial research\n\nProven experience building performance-critical, real-time, or low-latency systems (e.g., networking, trading systems, telemetry, gaming engines, or similar).\nStrong knowledge of computer science fundamentals: data structures, algorithms, memory management, and optimization.\nExperience using profiling, benchmarking, and performance analysis tools (e.g., perf, valgrind, flame graphs, CPU/memory profilers).\nProficiency with version control (Git) and standard build systems (CMake, Ninja, etc.).\nExcellent problem-solving skills and attention to detail; ability to work in a fast-paced environment.\nPreferred Qualifications\nExperience with kernel bypass or user-space networking technologies (e.g., DPDK, RDMA, VMA, Solarflare/OpenOnload) - helpful but not required.\nFamiliar with AI productivity-enhancing coding tools\nExperience in financial markets, market data distribution, order routing, or exchange connectivity.\nExperience with monitoring/telemetry for high-performance systems (latency histograms, throughput metrics, SLAs).\nFamiliarity with scripting languages (e.g., Python, Bash) for tooling and automation.\nPersonal Attributes\nObsessed with performance, measurement, and data-driven optimisation.\nComfortable owning features end-to-end and operating in a production environment.\nClear communicator who can work closely with both technical and non-technical stakeholders.\nProactive, self-directed, and able to thrive in a highly iterative environment.","description_format":"text","description_chars":2801,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-26T05:33:11Z"}],"liveness":{"score":9,"band":"cold","label":"Long shot","p_open":1,"p_active":0.259,"p_room":0.35,"age_days":73,"expected_fill_days":24,"reasons":["conf:19","agency","win:tail"],"computed_at":"2026-09-27T05:45:00Z"},"pay":{"stated_usd_annual":291433,"is_top_pay":true},"html_url":"https://alion.io/job/sohodragon-c-engineer","json_url":"https://alion.io/job/sohodragon-c-engineer.json","meta":{"generated_at":"2026-09-28T00:52:29Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":416,"day_limit":5000,"remaining_today":4584,"minute_limit":60,"resets_at":"2026-09-29T00:00:00Z"}}}