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Staff Software Engineer
Hands-on senior technical lead on a small product engineering team at a healthcare technology company: builds full-stack customer-facing features end to end, including LLM-powered functionality, while mentoring junior engineers and setting architecture and engineering practices. Hybrid, 3 days/week in San Francisco; $210–260k base plus equity.
Backend-разработчик (Python)
Senior Python backend developer at an early-stage AI startup building an 'AI second brain for CEOs' that turns chats, meetings and calendars into an operational picture. Day to day: building a Telegram bot (aiogram 3.x), REST APIs, a gRPC transcription service with Whisper/LLM, and optimizing PostgreSQL, using an async Python stack.
Senior Software Engineer
Senior software engineer at an early-stage London AI startup building an AI-native data collection platform for field inspectors. Day to day: redesign an offline-first mobile app (Expo/React Native), build systems that turn voice notes, photos and video into expert reports, and design architecture for feeding context to AI models.
Senior Software Engineer (Backend oriented) (Bogota)
Senior backend engineer at Félix, a Series C fintech building AI-powered remittances and financial services for Latinos in the US. You'll design and scale Python/FastAPI microservices in a Payments, Disbursements, or GRC (KYC/compliance) squad on Google Cloud, Kubernetes, and Terraform.
Senior Software Engineer (Backend oriented) (Buenos Aires)
Senior backend engineer at Félix, a Series C fintech building an AI-powered financial companion (remittances, soon credit/savings/wallet) for Latinos in the US. You'll architect and scale Python microservices (Flask/FastAPI, REST, gRPC, Redis, SQL) on Google Cloud within the Payments, Disbursements, or GRC squad, working fully remote.
Senior Software Engineer (Backend oriented) (CDMX)
Senior backend engineer at Félix, a Series C fintech building AI-powered cross-border remittances and financial services for Latinos in the US. You'll architect and scale Python microservices (Flask/FastAPI, REST, Redis, gRPC) on Google Cloud and Kubernetes within the Payments, Disbursements, or GRC squad.
Full Stack Software Engineer
Early full-stack engineer (recruited by Raydar on behalf of a fast-growing AI software company) in Palo Alto, on-site 5 days/week. You build production web apps, backend services, and tooling that turn ML/agent research into real products, working with Python and TypeScript. Salary USD 200k–300k plus equity.
Senior Firmware Engineer, Platform
Senior firmware engineer at a defense-tech startup building high-performance drones; owns the common runtime, SDK, and build system for flight, ground-station, and autonomy teams across MCU and Linux targets.
Senior/Staff Product Engineer, Applied AI
Senior/Staff Product Engineer building applied AI agents (sourcing, vetting, matching, placement) and the scalable backend/platform behind them for a Series A industrial staffing and AI marketplace. On-site in San Francisco; core stack includes Python and/or TypeScript/Node.js, PostgreSQL, and Kafka/RabbitMQ-style streaming.
Software Engineer, C++ Systems
Builds and maintains a core C++ GPU virtualization library for a cloud infrastructure startup, researching GPU oversubscription and checkpointing, extending support for new GPU architectures, and debugging production performance issues for AI/ML workloads. On-site in San Francisco; $250k–$325k with visa sponsorship.
Senior Development Test Engineer
Leads the design, fabrication, and operation of ground test infrastructure (test rigs, DAQ systems, instrumentation) that proves out large deployable space structures at Beyond Reach Labs in New York City. Owns test campaigns and acceptance/qualification procedures from prototype through flight hardware.
Senior Software Engineer, Infrastructure & Release
Own Feanix's entire delivery ecosystem for its Python/AWS dairy-genomics platform: CI, test and release engineering, observability and SLOs for overnight farm pipelines, plus cost, access control and infrastructure-as-code. Success is measured by how fast other engineers ship and how reliably decisions land on farms.
Senior Software Engineer, Genomics
Senior production engineer to take Feanix's animal-genomics pipelines from manually run to fully automated — sample sequencing, alignment, imputation, parentage and trait calls feeding dairy breeding decisions. Python end to end on AWS (Nextflow, Modal, HealthOmics, Batch, S3) with bioinformatics tools like PLINK, GLIMPSE2, and Parabricks.
Staff Software Engineer, Backend
Staff backend engineer at Kai, a venture-funded AI cybersecurity platform company, owning end-to-end delivery of distributed Golang microservices. The role designs scalable cloud-native services using Kubernetes, Docker, and CI/CD (Azure preferred), while mentoring engineers and partnering with Product, AI, and Security teams.
Principal Software Engineer, AI Platform
Hands-on technical leadership of Kai's AI platform engineering team: setting architecture, testing, and CI/CD standards for LLM-powered cybersecurity services while writing code, fixing production issues, and mentoring engineers and AI scientists. Core stack: Python, cloud (Azure preferred), containerized microservices, and LLM APIs.
QA Engineer — Wearables, Mobile & Cloud
Own end-to-end quality for a health wearable platform — testing across firmware, Bluetooth/BLE, iOS/Android SDKs, APIs, and cloud services, building automated tests in CI, and driving bug triage and release gates. Stack includes Python/JS, Swift, Kotlin, Go, and AWS.
Senior Software Engineer (Backend oriented) (Buenos Aires)
Senior backend engineer at Félix, a Series C fintech building a financial companion for Latinos in the US (remittances, credit, savings). You'd design and scale Python microservices on Google Cloud (Kubernetes, Terraform) in the Payments, Disbursements, or GRC/KYC compliance squad.
Senior Software Engineer (Backend oriented) (Guadalajara)
Félix, a Series C fintech serving Latino immigrants in the US with AI- and crypto-powered remittances, seeks a Senior Backend Engineer in Guadalajara to build and scale Python microservices on Google Cloud within its Payments, Disbursements, or GRC (KYC/compliance) squads.