# C++ Software Engineer at Reactivemarkets > Hybrid · Singapore · Unspecified · Software engineering · open. Source: https://alderhq.app/jobs/ashby%3Areactivemarkets%3A07dd4025-c2d9-4a69-bc55-e7708d714f80 (read 2026-11-11). ## Facts (observed) - Company: [Reactivemarkets](https://alderhq.app/companies/reactivemarkets) - Location text: Hybrid, Singapore - Where it can be done from (inferred): Hybrid · Singapore (evidence: "Location: Hybrid, Singapore") - Posted: 2026-10-23 (19 days ago) - First seen by alder: 2026-11-07 · last verified: 2026-11-07 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://jobs.ashbyhq.com/reactivemarkets/07dd4025-c2d9-4a69-bc55-e7708d714f80 - Skills listed (inferred): Python, C++, C#/.NET, AWS, Distributed systems ## Pay and sponsorship - Posted pay: not posted - Market band for similar posted roles (Singapore, n 19): p25 SGD 70k, median SGD 165k, p75 SGD 250k ## Description (the employer's text) ### C++ Software Engineer ### Hybrid (Singapore-based) \| Full-Time ### About Us Reactive Markets is the 2026 OTC Trading Platform of the Year (Risk.net). Our network handles over $75 billion in daily trading volumes across FX, Equities, and Cryptocurrency, connecting 60+ of the world's leading liquidity providers. We build trading systems that operate at the edge of what's technically possible — where nanoseconds matter and a dropped message costs real money. Our engineering team is small, senior, and deeply invested in the craft of building cutting edge, reliable, high-performance systems. ### The Role We're looking for a C++ Software Engineer who wants to build low-latency trading infrastructure on Linux. You'll work on the core components of our Switchboard trading platform — pricing engines, connectivity gateways, market-data systems, and the messaging layer that ties them together. This is not a role where you write code and throw it over a wall. You build it, you test it, you deploy it, you support it in production, and you improve it. Our engineers own the full lifecycle — from design through to operational excellence. When something breaks at 4pm on a Friday, you're part of the team that investigates and fixes it. Occasional hours outside the normal working day are required for production releases, scheduled maintenance windows, and Level 3 support during critical incidents. We keep this to a minimum and recognise the commitment — but owning a production trading platform means being there when it matters. ### What You'll Work On Modern C++20 and Go on Linux — a modern software stack based on open source Cloud-native infrastructure on AWS with colocation in key data centres Microsecond-level latency optimisation and high-throughput messaging Market-data and reference-data pipelines across multiple asset classes FIX protocol integrations with global banks and liquidity providers Observability and monitoring — dashboards, alerting, and metrics that make system behaviour visible Production systems that handle real money — reliability is not optional ### What We Need ### Technical Strong C++ with Linux systems programming (3+ years) Comfortable working close to the metal — you understand what's underneath your code Experience with performance-sensitive systems (profiling, optimisation, deterministic behaviour) Familiarity with networking fundamentals (TCP/UDP, socket programming) Go experience is a strong bonus — we use Go extensively for microservices and command-line tooling, and you'll be expected to work with it internally. If you don't know it yet, strong C++ engineers pick it up quickly Python for scripting, automation, testing, and data analysis — used across the platform for tooling and operational workflows Git and shell scripting Experience in financial services or trading technology is a plus but not essential ### How you work You ship. You're delivery-focused — you iterate, you improve, you get things into production You own it. When you build something, you take responsibility for its behaviour in production. You respond to incidents (15-minute acknowledgement SLA during working hours), investigate issues, and close the loop You write things down. Documentation is not an afterthought — it's how we scale knowledge across a distributed team. If it's not written down, it doesn't exist You communicate. We're a distributed team across multiple time zones. Clear, proactive communication — especially when things go wrong — is essential You care about quality. You write clean, testable code. You review your peers' work thoughtfully. You push for continuous improvement without gold-plating You embrace AI tooling. We use AI tools (Claude, Gemini) to amplify our engineering capability — from code review and debugging to incident investigation and documentation. You don't need to be an expert, but you should be curious and willing to learn ### What You Get Real problems — trading systems where performance is measured in microseconds, not user clicks An excellent team — senior engineers who care about craft, collaborate openly, and hold each other to high standards --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/ashby%3Areactivemarkets%3A07dd4025-c2d9-4a69-bc55-e7708d714f80 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.