Backend Developer

Senior individual contributor role leading multi-quarter technical initiatives to improve reliability, scalability, performance, and security of authentication systems. Requires hands-on experience building backend services and APIs (Go/Python), designing and operating cloud-native systems on AWS/GCP (S3, DynamoDB, Kinesis, IAM), and ownership of deployments, monitoring, incident response, and CI/CD/Kubernetes-based operations.

Work as a Senior Software Engineer on the Capture team to design, build, test, deploy, and operate Go microservices and media pipelines that ingest and normalize real-time and recorded audio/video from providers (Zoom, Teams, Webex, Amazon Connect, Genesys) into downstream analytics. Requires 5+ years building and operating distributed backend services, cloud-native experience (AWS/GCP), containerization (Docker, Kubernetes), and production on-call support.

Drive architecture and implementation of the AI Gateway's core systems (model router, MCP gateway, control plane) to support scaling, security, and observability. Own high-ambiguity problems such as dynamic model selection, auto-failover, cost-based routing, policy enforcement, and tooling for evaluating and backtesting agent/LLM behavior, while mentoring senior and mid-level engineers and partnering with product and design.

Build and own core systems for Docker AI Gateway (model router, MCP gateway, control plane). Implement secure credential storage, session summarization, caching, rate limiting, and developer-facing OpenAI-compatible APIs. Require 6+ years backend engineering experience, strong knowledge of distributed/cloud-native systems, and fluency in Go and/or Rust. Remote-first role based in the United States. Salary range listed: $160,900–$260,700 per year.

Role owns end-to-end feature development and production services for a TypeScript monorepo (Fastify/Express, Next.js/React), with MySQL/Redis, SQS workers, AWS services, Kubernetes deployments via Terraform/Helm and Azure DevOps pipelines. Responsibilities include observability, on-call incident work, retiring legacy .NET/Python components, integrating third-party APIs, and building AI-assisted features. Base salary range $115,000–$160,000 USD per year.

NVIDIA is hiring a Senior GPU Compiler Engineer to understand, modify, and improve a proprietary GPU compiler backend in C++. The role focuses on designing compiler passes and optimizations for Graphics (OpenGL, Vulkan, DirectX) and Compute (CUDA, PTX, OpenCL, Fortran), and involves collaboration with global compiler, hardware, and application teams. Requires a BS in CS/Engineering or equivalent, 4+ years of compiler code generation experience, and strong C++ and software engineering skills. A salary range of 152,000 USD to 241,500 USD per year is provided in the posting.

The AI Core engineer will design, build, and operate retrieval systems (RAG and hybrid search), developer tooling for production agents, and evaluation/observability practices. Requires experience shipping production AI or backend systems, expertise with retrieval (embeddings, vector and lexical search, reranking), and backend fundamentals (e.g., PostgreSQL, Python, Ruby, JavaScript, or Go). The posting includes a base salary range of $172,500 - $260,100 annually.

Join a cross-functional team owning metrics collection and ingestion from agents on customer hosts to backend processing. Responsibilities include solving performance, scalability and correctness issues, leading technical design across agent and backend, and participating in an on-call rotation. Requires 5+ years professional experience in Rust, Go or C/C++, strong systems-programming skills (Linux internals, networking, file I/O), and familiarity with eBPF, container runtimes, Kubernetes, observability/telemetry, and cloud providers (AWS/GCP/Azure) is a plus. Location noted as flexible — Serbia. English fluency required.

Sardine is hiring a Full Stack Engineer for Investigator Tools (remote, Ireland). The role focuses on building data-intensive applications to help fraud analysts, owning features end-to-end from problem discovery to UX and technical implementation. Typical work is ~60% backend (Node.js, Go) and ~40% frontend (TypeScript, React). Responsibilities include building and optimizing graph systems and search tools, ensuring system health, and collaborating with Design, Data, Product, and Account teams. Required experience centers on production-ready coding in the listed stack, data modeling, production data pipelines, and working at scale in a high-growth environment.

Sardine is hiring a Full Stack Engineer to develop end-to-end, data-intensive investigator tools used to detect and investigate fraud. The role focuses ~60% on backend and ~40% on frontend work and involves building graph systems, performant search tools, and production data pipelines while collaborating with Design, Data, and Product teams. Remote within the United Kingdom.