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ArrowFin is a financial services company specifically focused on the trading world. We create and optimize in-house technological solutions that directly assist our clients with their trading activities on the Chicago Mercantile Exchange. Key Responsibilities: Engineering Backend Delivery: Design, build, and operate backend services and REST APIs using Java with Spring Boot on the trading platform, and NestJS on analytics and risk services, applying clean/hexagonal architecture. Web & Frontend Delivery: Implement complex, high-frequency trading interfaces and analytics dashboards using React 19 and TypeScript, managing virtualized grids, chart surfaces, and WebSocket lifecycles. Data & Relational Layer: Own relational models and PostgreSQL queries, handling schema design, query plans, indexing, migrations (Flyway/Prisma), and strict multi-tenant query isolation. Real-Time Data Paths: Build and maintain WebSocket and event-driven data flows for market feeds, order events, positions, and risk signals, ensuring system reconciliation after feed drops. Risk & Trading Domain Logic: Build critical financial logic including order entry/brackets, real-time P&L updates, position exposure, margin calls, and automated risk enforcement. Security & Multi-Tenant Compliance: Enforce OAuth 2.0/OIDC authentication, session management, and PII regulatory standards (CFTC/NFA compliance) ensuring strict cross-tenant data isolation. Observability & Testing: Instrument services with metrics, traces, and structured logs (OpenTelemetry/Prometheus/Pino). Write comprehensive unit, integration, and E2E tests. Key Responsibilities: Technical Oversight & Mentorship Code Reviews & Quality: Act as the primary code reviewer for the Medellin team, focusing on system design, safety, and consistency across repositories. Mentorship & Standards: Pair with mid-level engineers in person to grow their technical judgment. Set standards for testing, architecture patterns, and commit conventions. Technical Grooming: Refine product requirements into clear, unambiguous technical plans before execution. Local Escalation: Act as first responder and lead root cause analysis for Colombia-hours staging or production issues. Cross-Functional Collaboration: Partner daily with remote engineering leads, DevOps, QA, and Product Management teams Technical Requirements Hands-on experience designing, shipping, and operating scalable backend microservices under real load. Strong PostgreSQL proficiency (reading query plans, indexing, safe migrations, multi-tenant scoping). Proficiency in React (React 19 preferred) and TypeScript, building high-frequency screens without performance degradation. Deep experience with WebSockets, handling connection drops, backpressure, and data reconciliation. Proven record building OAuth 2.0/JWT/OIDC session systems with strong multi-tenant isolation controls. Git, GitHub Actions, Docker, Docker Compose, Jira, and CI/CD maintenance.
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.