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QA Engineer
Paid QA internship at MiPrep AI, an AI interview-prep copilot platform: testing web apps and AI features through manual and automated test cases, building automation scripts with Selenium/Playwright/Cypress, and running functional, regression, integration and API testing while collaborating with developers to fix bugs.
Staff AI Product Designer
Staff AI Product Designer at Deeply, an early-stage startup building an AI-powered Relationship OS for couples. Owns end-to-end research and design: interviewing couples, designing AI conversations and recommendations, and evaluating AI experience quality, working directly with the founder and engineering team.
Lead Data Scientist
First data scientist at Obsero, a UK AI search startup that tracks how brands are cited across ChatGPT, Gemini, Perplexity and other LLM platforms. You'll build the GEO playbook, a productized recommendation engine, and predictive models explaining why LLMs recommend brands, using Python, SQL, statistical/causal modelling and LLM/NLP techniques.
Sr. Visual Designer
Senior Visual Designer who owns and evolves Cantina's brand identity across web, campaigns, print, and video — leading art direction, crafting bold typography-led graphic design, and art-directing AI-generated imagery and launch films. Core tools: Figma, Photoshop, Illustrator, with motion/video tools (After Effects, Premiere, DaVinci) as a plus.
Senior Software Engineer AI Evaluation Coding Agents
Part-time contractor role evaluating AI-generated code and coding-agent behavior: reviewing model outputs against rubrics, judging correctness, and writing clear technical feedback. Requires 5+ years of software engineering (Python, TypeScript/JavaScript, or Go); open to US and Canada candidates at $100-150/hour.
Firmware Test Engineer
At Echo Neurotechnologies, an early-stage brain-computer interface (BCI) medical-device startup in San Francisco, the Firmware Test Engineer designs test strategies and builds Python-based automated test frameworks, HIL setups, and V&V processes to ensure the reliability and safety of embedded firmware in cutting-edge medical devices.
Senior Infrastructure Engineer (Active TS/SCI clearance required)
Senior Infrastructure Engineer at Manifest, a software supply chain and AI security startup, owning the design, build, and operation of infrastructure and CI/CD pipelines using Terraform, Ansible, Helm, Go, and Kubernetes across AWS, Azure/GCP, on-prem, air-gapped, and FedRAMP environments. Fully remote role paying $150k-$210k plus equity.
Security Systems Engineer
Designs and runs the security control plane for Fluidstack's AI data centers from scratch — PKI, identity/deprovisioning, backups, disaster recovery, and monitoring — replacing vendor-managed physical-security appliances with versioned, reproducible infrastructure. Key tech: virtualization/clustered storage, SQL Server HA, AWS, and Terraform/Ansible/PowerShell.
Security Systems Administrator
Administers the physical security systems estate (cameras, readers, door controllers) across Fluidstack's gigawatt-scale AI data center campuses: running the device remediation queue, firmware/patch campaigns, Windows Server/Active Directory, runbooks, and technical incident response. U.S. remote role on a security team building the program from scratch.
Senior/Staff Software Engineer, Customer Integrations — PCB/CAD
Senior/Staff engineer on Quilter's File I/O team, resolving customer integration blockers and shipping Python parsers/exporters that move PCB designs between CAD tools (Altium, KiCad, Cadence Allegro, Siemens Xpedition) and Quilter's AI-driven PCB design platform, plus LLM/agent tooling to automate troubleshooting. Hybrid role based in Long Beach, CA.
Protocol Solutions Engineer
Protocol Solutions Engineer at Etherealize (posted via TechChain Talent): build privacy-native DeFi applications, partner integrations, and bridges to public Ethereum on top of the company's Rust/ZK privacy protocol for institutional finance. Requires deep EVM, Solidity, and DeFi experience; ZK expertise is a plus but not required.
Blockchain DevOps Engineer
First dedicated DevOps hire at Etherealize, a crypto startup building on-chain infrastructure to bring Wall Street assets on-chain. You'll own AWS/Terraform IaC, CI/CD for the web app, Ethereum node and ZK GPU proving pipeline operations, observability, secrets management, SOC 2 readiness and incident response end to end.
Software Engineer
Software engineer at Syntrace, a startup building source-backed conversational knowledge tools for institutional investors. You own features end to end across the stack (TypeScript or Python) on an event-sourced, real-time, security-focused core in a small senior New York team.
Product Marketing Manager | AI AppSec
First dedicated Product Marketing Manager at Escape, a Series A cybersecurity startup whose product automates attack surface management, dynamic security testing, and AI-driven pentesting. Day to day: own positioning and GTM for feature launches, run competitive research, and build sales enablement and thought-leadership content.
Senior Full-Stack Engineer
Senior Full-Stack Engineer at Zynap builds and owns features end to end on an AI-native platform: Go and Python microservices, event-driven pipelines, and a React + TypeScript front end. Agents and LLM-powered workflows are core to the product, and AI coding tools are core to the workflow. On-site in Barcelona.
Senior / Staff Software Engineer, Data Infrastructure
Senior/Staff engineer building and scaling Suno's data infrastructure — streaming and batch pipelines, feature computation, and low-latency serving that power music recommendations and ML. Stack centers on AWS (Kinesis, Flink, S3, Glue) plus Snowflake, Dagster, dbt, and Terraform, on-site in Cambridge, MA or NYC.