Backend Engineer (JS, .Net y AWS)

Quora is hiring a Software Engineer (New Grad) for its Machine Learning Platform team to build and maintain distributed systems and GPU model-serving infrastructure, improve ML developer velocity, and modernize the ML ecosystem. Remote-eligible for Canada and the United States; candidates should be 2025 or 2026 graduates in CS/engineering or related fields and familiar with languages like Python, Go, or C++.

Hiring a Technical Lead Full Stack Developer based in Mexico City (hybrid). Responsibilities include delivering projects through individual contributions and team leadership, providing production support for financial/operational systems, applying modern software architecture and APIs, building CI/CD pipelines, performing data analysis/reconciliations, and integrating LLMs and AI-assisted workflows. Required: strong C#, SQL, JavaScript, experience with Angular or React, familiarity with AI development tools (Claude Code, Cursor, GitHub Copilot), and advanced English. Preferred: TypeScript, Python.

Hiring Senior Full Stack Developer based in Mexico City (hybrid). Role requires strong experience with C#, SQL, JavaScript and Angular or React; knowledge of modern software architecture, APIs, frameworks, and CI/CD; production support for time-sensitive systems; and contributing to AI initiatives by integrating LLMs and AI-assisted tools. Advanced English required.

Lead frontend technical direction for systems that convert trading, payment, and transfer activity into financial records. Build React/TypeScript applications for high-volume financial data, design auditable human-in-the-loop workflows, define backend/API contracts, and establish frontend quality practices. Requires 8+ years of software engineering experience with fullstack capability; experience in financial/reconciliation or payments products preferred. Role is remote-first (Remote - USA) with quarterly in-person working sessions. Annual base salary range: $218,025–$256,500 USD.

Wikimedia Foundation seeks a Senior Software Engineer, iOS on a 3-month full-time contract to work on the App Growth team. Responsibilities include delivering medium-complexity initiatives end-to-end, system design, improving the iOS Wikipedia app, instrumentation for observability, and cross-functional collaboration. Requires a bachelor's degree and 5+ years professional experience building iOS apps with strong proficiency in Swift, SwiftUI, and UIKit. Role is fully remote but requires at least four hours of each workday between 14:00 and 21:00 UTC. Hiring is currently open in a specified list of countries.

The Wikimedia Foundation seeks a Senior Software (full-stack) Engineer on a 3-month full-time contract to build web-first product experiences, reusable components, and RESTful APIs that serve mobile and web surfaces. Responsibilities include end-to-end delivery, frontend and backend implementation, testing and observability, and cross-functional collaboration. Required: bachelor's degree and 5+ years' professional experience, strong JavaScript/TypeScript and Vue.js experience, backend experience (PHP), responsive/mobile-first development, accessibility, and API design. The role is remote with hiring available in a specified list of countries (including the United States) and expects a defined hourly overlap with UTC time.

Work end-to-end designing, building, and operating full-stack features (TypeScript, Node.js, React/Next.js) for trader-facing products and internal systems. Requires 5+ years building production-grade systems, experience with distributed/event-driven architectures, PostgreSQL/SQL Server, observability, on-call participation, and a focus on reliability, security, and scalability. Preferred experience in fintech, payments, container orchestration (Docker, Kubernetes), and deployment pipelines (Argo CD, GitHub Actions).

Hands-on Staff role owning architecture and delivery for Agentic Ads: translate customer needs into roadmap and systems, build LLM/agentic workflows and third-party integrations, establish measurement and financial controls, ensure reliability (idempotency, durable state, observability), run evaluations and experiments, and mentor/lead across product, design, AI, data, security, and partnerships.

CrowdStrike seeks a Network Engineer III to deploy and manage multi-vendor, multi-region hybrid cloud data center networks, drive automation and testing to improve deployment velocity, develop scripts/tools for visibility and automation, and participate in 24x7 on-call rotations. Requires 7+ years building and operating production networks (4+ years focused on automation), hands-on experience with Ansible, Terraform, NETCONF/YANG or gNMI/OpenConfig, production-quality Python or Go coding, familiarity with Git and CI/CD, expertise in routing/switching protocols (IPv6, MP-BGP, OSPF, ISIS, EVPN, VxLAN, QoS, IPsec, MACsec), experience with public cloud connectivity (AWS/GCP/Azure), and U.S. citizenship or permanent residency. Base salary range for U.S. candidates: $120,000–$180,000/year.

Work directly with the CEO and CTO to design, build, and own a multi-tenant, serverless monorepo telehealth platform. Responsibilities include shipping end-to-end product experiences, writing well-tested code, working across the stack (interface through API to database), leveraging LLMs (Claude, Cursor) in development, and building for scale, performance, accessibility, and reliability. Key technologies called out: TypeScript, Next.js, React, tRPC, Prisma, SST, Node.js, Drizzle, AWS services (SQS, EventBridge, Lambda), and SQL/datastore schema design.