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Blackshark AI·Full-time

Workwear Outfitters' IT·Remote

Radar Labs·Remote (US), NYC

Cocient·AI training & evaluation

Sphinx Defense·Remote (US Only)

We are hiring for several roles at StudyTurtle, an edutainment brand building learning videos for Education. Our small, passionate team creates animated shows for kids (ages 4-10) and we create our own tools to create the show faster. We want to help kids fall in love with curiosity and real-world learning. We use custom automation to speed up everything from story writing to animation. See what we’re making: Open Roles (REMOTE, non US): * Animators (2D/3D or hybrid—experience with AI tools a plus) * Director/Writer - Writer and storyboarder, good at storyboarding, storytelling, writing, and prompting Why join us? -Fully remote, async-friendly Ship real things that impact how kids learn Fast, creative, zero-corporate-BS environment Must have at least 3+ hours overlap with at least PST hours 2-5 pm PST. To apply: Email jobs [at] studyturtle.com with your background,relevant tool usage, and resume. Take a look at the episode we posted and give us feedback on how you would make it better. Please include links to any relevant work. We are the hiring company and will reply to all genuine applicants. No recruiters, no agencies, please.·Remote

Relevant Healthcare·Remote (US/Canada)

Location: Tbilisi, Georgia (GMT+4) Remote: Yes (required) Technologies: Ruby on Rails, Elixir, Phoenix, React, React Native, Node.js, TypeScript, PostgreSQL, Redis, AWS, LLM/AI Website: Resume/CV: LinkedIn: GitHub: Email: davit.khaburdzania@gmail.com 3x founding/first engineer with 15+ years shipping products from zero to scale. Most notably: founding engineer at EverAI — joined at zero, built nearly every core feature, grew to 20M users and $5M/month revenue. Pioneered production AI pipelines across LLMs, image generation, voice synthesis, and video — not API wrappers, full systems. Also: first eng at Shogun (YC W16, became category-leading Shopify app), CTO at AirHelp (concept to launch in 5 months), founded and scaled a 20-person dev agency. Most recently built an ad platform at TurbaMedia from zero to $24M+ annual spend in 6 months. Looking for: Early-stage startup where I can own product areas and work directly with founders. I've built entire products solo — I don't need hand-holding, I need interesting problems. Fully remote.·Remote

Location: Dubrovnik, Croatia (CET) Remote: Yes (remote only; EU/UK/US-overlap hours OK) Willing to relocate: yes Technologies: TypeScript, React, Next.js, Node.js/Express, PostgreSQL, Supabase, Prisma, Stripe (billing, webhooks), OAuth/JWT/RBAC, Anthropic/OpenAI APIs, RAG, Tailwind, Jest/Vitest/Cypress, Docker, GitHub Actions Résumé/CV: GitHub: LinkedIn: Email: lazarbukejlovic@icloud.com Full-stack / product engineer, 4+ years shipping production SaaS end to end. I lead a team of 5–6 engineers for an international client. Built operational dashboards used by ~10k monthly users, fixed duplicate-charge and sync bugs at the source with idempotent webhooks, and ship AI features that people can trust (cited evidence, confidence scores, human review queues). Also 3 years of customer-facing technical support, so I'm comfortable owning a problem from the customer report to the fix. Looking for: Product Engineer, Full-Stack, AI Product Engineer or Technical Support Engineer roles at small teams.·Remote

Sphinx Defense·Remote (US Only)

Sphinx Defense·Remote (US Only)

Sphinx Defense·Remote (US Only)

Sphinx Defense·Remote (US Only)

Sphinx Defense·Remote (US Only)

One Way Tech Hubs·Remote (US)

Brilliant.org·Remote (North America), SF, NYC

Brilliant.org·Remote (North America), SF, NYC

Blackshark AI·Full-time

Blackshark AI·Full-time

Surge AI ( )·Full-time

Radar Labs·Remote (US), NYC

Radar Labs·Remote (US), NYC

Location: San Jose, CA Remote: Open Willing to relocate: Yes Technologies: Python, TypeScript, React, Next.js, PostgreSQL, REST APIs, OAuth2, S3, Docker, AWS, GCP, Cloudflare, LLM APIs (OpenAI, Anthropic), MCP servers, speech-to-text, real-time voice AI, RAG, Stripe Résumé/CV: Email: meera@videotobe.com Open to contract work.·Remote

Hiring for several roles at StudyTurtle, an edutainment brand building learning videos for Education. Our small, passionate team creates animated shows for kids (ages 4-10) and we create our own tools to create the show faster. We want to help kids fall in love with curiosity and real-world learning. We use custom automation to speed up everything from story writing to animation. See what we’re making: Open Roles (REMOTE, non US): Animators (2D/3D or hybrid—experience with AI tools a plus) Director/Writer - Writer and storyboarder, good at storyboarding, storytelling, writing, and prompting Computer vision engineer - Must have deep experience with SVG programming and/or computer vision Why join us? -Fully remote, async-friendly Ship real things that impact how kids learn Fast, creative, zero-corporate-BS environment Must have at least 3+ hours overlap with PST hours. -Direct access to founders; real ownership -Opportunity to shape our tools and shows from the ground up To apply: Email jobs [at] studyturtle.com with your background, a few sentences about why edtech is important to you, any feedback on our episodes, and why this mission excites you. Take a look at the episode we posted and give us feedback on how you would make it better. Please include links to any relevant work. We are the hiring company and will reply to all genuine applicants. No recruiters, no agencies, please. Genre, co-creator StudyTurtle·Remote

Blackshark AI·Full-time

Location: Buenos Aires, Argentina (UTC-3) Remote: Yes Willing to relocate: Yes, depending on the opportunity Technologies: Python, TypeScript/Node.js, React/Next.js, FastAPI, PostgreSQL, AWS, PyTorch, LLM/agent systems, TTS/voice cloning Résumé/CV: GitHub: LinkedIn: Email: ffranclarke@gmail.com Software / AI Engineer and recently graduated Systems Engineer with ~1 year of professional experience. At Neufitech, I work on voice technology for people with ALS, including voice cloning/TTS, audio processing, APIs, inference infrastructure, and integration into applications. For my engineering thesis, I built ManyHands, a multi-agent software engineering orchestrator that decomposes tasks into a hierarchical DAG, runs coding agents in isolated Git worktrees, evaluates outputs, and integrates results bottom-up. Primarily looking for Software Engineering and Applied AI / AI Engineering roles. Also very interested in MLOps, AI infrastructure, and cloud/platform engineering. I enjoy working at the intersection of software, models, and infrastructure, and owning problems end-to-end. Open to remote opportunities internationally and roles in Argentina.·Remote

Location: Dorset, UK Remote: Yes (UK, US and EU time zones) Willing to relocate: No Technologies: Ruby on Rails, Python (FastAPI), TypeScript/Node, Go, PostgreSQL, AWS, Hotwire Resume/CV: Email: wm@wagnermatos.co.uk Senior engineer, over 15 years. I build complete products: one senior engineer accountable end to end, AI accelerated. Recent work includes a clinical alerting platform used by NHS trusts, an edge to cloud analytics platform for Johnson & Johnson Medical, and the cloud platform behind a fielded detection hardware fleet. Also open to contract engagements. Case studies and client testimonials on the site.·Remote

Location: Pisa, Italy (CET) Remote: Yes, remote only Willing to relocate: No Technologies: Python, LLM/agent orchestration, local embeddings, retrieval evaluation, AWS (Lambda/SQS/EventBridge), Terraform, Django, PostgreSQL, LightGBM/PyTorch, NLP/Transformers Résumé/CV: linkedin.com/in/vslovik Code: github.com/vslovik/fenix — local-embedding search whose relevance is actually measured: labelled control probes, blinded human ranking, precision@k. No API keys. Email: valeriya.slovikovskaya@gmail.com Software architect, 15+ years in production systems, almost entirely startups and internal startups — fintech, e-commerce, pharma, publishing. The work I get pulled into is the recurring startup problem: a service shipped fast under launch pressure, without adequate tests, that later has to be made reliable without being stopped. Incident response, re-architecture, and the release discipline that keeps it from happening again. Most recently that has meant a regulated UK consumer-credit platform — loan servicing, arrears, forbearance, statutory breathing space, and early-settlement calculations written against consumer-credit legislation. Regulation as code, behind a test suite larger than the production codebase. I've done that in all three configurations: taking a core system from problem statement to release, leading the team that carried it (1 to 7 engineers in ten months), and now doing the same work again with agentic tooling covering what the team used to. On the data side: a LightGBM acquisition model over a 38M-row base — 0.77 test AUC, 8x lift in the top 1% — scoring 2.9M households for a live campaign. The part I'd rather be judged on is what happened next: I found a validation-set defect in my own pipeline (early stopping on the test split), quantified its effect across every figure I had already reported, restated them, and added a pure-noise regression test that pins the model to chance when fed random features — so that class of leak cannot come back quietly. NLP is hands-on rather than API-deep: my degree thesis fine-tuned BERT, RoBERTa and XLNet to state of the art on the FNC-1 stance-detection benchmark, published at LREC 2020. Building on my own time: github.com/vslovik/fenix — it ranks an incoming stream against a free-text description of what you're looking for, and answers questions over the same corpus with citations back to source chunks. Ollama embeddings, sqlite-vec, no API keys. The part worth looking at is the evaluation: the ranking anchor is scored against a labelled probe set with a deliberate control group of things I don't want, and live results are rated blind — scores hidden, order shuffled — so the human judgement stays independent of the ranking it is judging. Doing that produced a measured finding I did not expect: an embedding has no notion of negation, so naming a technology in order to reject it moves the anchor toward it. Numbers and method in lessons/embedding-anchors.md. Also a tool-calling agent that turns unstructured regulatory text into a deterministic calculation pipeline — the model does the extraction, a deterministic engine does the arithmetic. Looking for agentic AI/LLM engineering, LLM evaluation and observability, AI integration, or software architecture. Founding-engineer shape suits me — early employee, not co-founder, but early enough to be in the room where the work gets defined. Direct with the company that owns the product: not consultancy, not agency placement, not a body on someone else's engagement.·Remote

Sphinx Defense·Remote (US Only)

One Way Tech Hubs·Remote (US)

Blackshark AI·Full-time

Surge AI ( )·Full-time

Surge AI ( )·Full-time

Radar Labs·Remote (US), NYC

Founding Head of Growth — Comograph - Fully Remote - Worldwide Comograph is building the global Proof-of-Work network for human capability. We’re looking for an experienced growth/sales leader to join our founding team and own our path to the first 10 paying employers. You’ll own: \ B2B growth & GTM \ Employer acquisition & closing \ Strategic partnerships \ Building our first repeatable sales engine \ Working directly with the CEO We want someone who has actually grown an early-stage company, knows how to open doors, sell, build relationships, and execute independently. Equity-only at this stage. No salary yet. This is a true founding opportunity—you won’t inherit a growth function; you’ll build it. Interested? Send your CV/LinkedIn to ceo@comograph.com with a short note on what you’ve grown and how you’d get Comograph its first 10 paying employers.·Remote

SingleStore·Full Time, Remote India SingleStore is a distributed SQL database built for high-performance transactional and real-time analytical workloads. As data systems evolve, we’re building the platform for AI applications that operate directly over enterprise data +22 more

Early-stage Startup·Full-Time

DuckDuckGo - we are looking for candidates that are excited to join us on a mission to raise the standard of trust online. All of our roles are fully-remote, except where specific locations are noted. Senior Web Security Engineer, Browser Platform - $178,500 USD + equity ... Senior Backend Engineer - $178,500 USD + equity ... Staff Data Scientist - $222,033 USD annually + equity ... Director, Data Science - $243,800 USD + equity ... Director, Privacy Engineering- $243,800 USD + equity ... Director, Paid Marketing (Subscriptions) - (Remote within USA) - $243,800 USD + equity ... Senior Growth Marketing Manager (Subscriptions) (Remote within USA) - $178,500 USD + equity ... Senior Product Partnerships Manager (Remote within USA or Canada) - $200,267 USD + equity·Remote·USD 222,033 - 243,800

DuckDuckGo - we are looking for candidates that are excited to join us on a mission to raise the standard of trust online. All of our roles are fully-remote, except where specific locations are noted. S enior Web Security Engineer, Browser Platform - $178,500 USD + equity ... Senior Backend Engineer - $178,500 USD + equity Staff Data Scientist - $222,033 USD annually + equity Director, Data Science - $243,800 USD + equity Director, Privacy Engineering- $243,800 USD + equity Director, Paid Marketing (Subscriptions) - (Remote within USA) - $243,800 USD + equity Senior Growth Marketing Manager (Subscriptions) (Remote within USA) - $178,500 USD + equity Senior Product Partnerships Manager (Remote within USA or Canada) - $200,267 USD + equity·Remote·USD 222,033 - 243,800

Telescope Partners·Remote - AMERICAS ONLY

VALIS (Valis Insights)·Remote (US, East Coast hours)

Anthropic·US incl Remote + Canada + Ireland + UK + Switzerland + Japan

UNICEF - REMOTE backend dev - Digital Inclusion Division, Connectivity Credits We're building a marketplace where local ISPs connect schools and health centers to the internet, prove it via telemetry, and get access to discounted backhaul, IP transit and compute from large infracos. Currently in pilots in Mexico, Kenya, South Africa, Malawi. Looking for 1 dev to join a small tech team (3 people) working on this protocol and marketplace, which sits on top of a larger tech team of 30 people at UNICEF Digital Inclusion. Not your typical UN job or culture. The rest of the team are in Barcelona/Geneva, but this role is remote. 6 month contract to start, with the aim to continue long term.·Remote

Location: Dorset, UK Remote: Yes (UK, US and EU time zones) Willing to relocate: No Technologies: Ruby on Rails, Python (FastAPI), TypeScript/Node, Go, PostgreSQL, AWS, Hotwire Résumé/CV: Email: wm@wagnermatos.co.uk Senior engineer, 15 years. I build complete products on a fixed scope and fixed price: one senior engineer accountable end to end, AI-accelerated. Recent work includes a clinical alerting platform used by NHS trusts, an edge-to-cloud analytics platform for Johnson & Johnson Medical, and the cloud platform behind a fielded detection-hardware fleet. Also open to contract engagements (Rails). Case studies and client testimonials on the site.·Remote

Ambito (ambito.io) — Founding AI Engineer / Equity Partner — Remote but Boston based only Ambito is a CRM-connected QBR generator for B2B sales teams. The product is live, with the sales module, template engine, and CRM integrations already built. We're looking for a founding AI engineer to make the product significantly smarter and broader. This is an equity-only role initially (10+ hrs/week), working directly with the founders and our existing technical partner. You'll work on: AI product features: Build a native assistant that can answer questions about customer data, surface trends, provide setup guidance, and help generate QBRs. Retrieval, tool use, structured-data queries, evals, and cost control. Customer Success: Extend the existing framework into account reviews, renewals, and customer health. Integrations: Harden and expand CRM/CS integrations (Salesforce, HubSpot, etc.). Product: Make the overall experience faster, simpler, and more AI-native where it actually helps. We're looking for someone who has shipped LLM features in production, not just demos, and is comfortable with retrieval, embeddings, tool calling, agent workflows, and evaluation. You should also be able to work across React, TypeScript, and Node (Firebase experience is a plus). You should think like a product engineer: turn varied customer requests into simple, flexible systems and work independently. Sales tech / RevOps / CS experience is a plus. Boston/MA is a plus. To apply: Send a short note with something you've built using AI and why this problem interests you. No cover letter. LinkedIn or contact@ambito.io.·Remote

Location: Andalucía, Spain (CET) Remote: Yes – remote only Willing to relocate: No (EU citizen – no visa or work permit needed for EU employers) Technologies: TypeScript, React, Next.js, Node.js, Fastify, React Native, PostgreSQL, Prisma, Supabase, Anthropic SDK (Claude), LLM pipelines, Vitest/Jest, CI/CD Résumé/CV: · linkedin.com/in/saturno-mangieri · github.com/theghost1980 Email: saturnob612 [at] gmail.com Full-stack engineer, 6+ years on 100% remote teams, focused on shipping LLM features to production. Last role: tech lead for AI call analysis at a US marketing agency. Took the MVP from design to validated delivery in 2 months: a Claude-based pipeline that turns a month of customer calls into coaching reports, with model-free quote verification (every quoted sentence is checked against the transcript, so no fabricated quote reaches a client), batch runs of up to 300 calls with live progress, and cost protection so no paid model response is ever lost. Before that: product engineer on a crypto wallet with 10k+ users, where I shipped a swap widget that generated $10k+ in direct revenue in its first 5 months and set up the project's first testing/CI environment. Looking for: full-time or contract roles in AI product engineering or full-stack. Available now. English C2, Spanish native.·Remote

Kadoa·Remote

CMU·Remote

Common Prefix – Software Engineers / Auditors – Greece – Remote – Full-Time Common Prefix is a science-first blockchain consulting company. Our vision is to make blockchains usable for mainstream users and everyday people – paying at the supermarket, remittances, moving money across borders, saving, investing – and solving the real problems of usability, scalability, and interoperability that come with it. We're a 30-person team, half scientists (cryptographer PhDs, post-docs, and professors) from renowned universities, half engineers with long web2 experience. A lot of our field is broken and we're trying to make a small contribution in fixing it, by introducing provable security and proper engineering practices across the board. What we're looking for: Software engineers who can solve problems, are smart, get things done, and enjoy working on the bleeding edge, learning about cryptography, and working from first-principles. Auditors who can write and read code, especially low-level cryptographic implementation code (zero knowledge verifiers, signature schemes, etc), consensus (PoW, PoS), or smart contracts (everything DeFi). Tech stack: Doesn't matter, we'll teach you. But we work mostly with Rust. Open roles: * Software Engineer, * Auditor, We offer: - $80,000–$160,000 / year cash - Local from Athens, Greece, or remote, preferably in Europe - Conference participation in exciting scientific and engineering venues, 2-3 times per year - The opportunity to work and learn from world-class scientists from major universities in the field of blockchains, cryptography, and consensus If you're interested in joining our team, please reach out to careers commonprefix com with the subject line "HN: ".·Remote·USD 80,000 - 160,000 / annual

Director of Sales Legal Ark AI · First Sales Leader · Job Description · REMOTE (US) and talent@legalark.ai About: Legal Ark AI serves as the workflow intelligence engine for estate planning practices. Our platform converts unstructured client data into high-confidence, verified facts prior to document generation, empowering legal teams to accelerate throughput, mitigate risk, and scale efficiently without a linear increase in headcount. The Role: As our first Director of Sales, you will own new business revenue end to end and build the sales engine from the ground up. You will personally close early deals, figure out the repeatable playbook, and then hire and lead the team that scales it. What You’ll Own: - New business ACV: land our core market, estate planning firms with 1 to 25 attorneys, and structure larger deals where they make sense. Large litigation firms are not our market. - The playbook: build outreach, qualification, demo, and close motions from scratch; find the repeatable recipe, then document and scale it. - The team: hire and lead SDRs and inside reps as revenue supports, so you move from doing everything to leading a team that does. - The stack: own the sales tooling (prospecting, CRM, sequencing, automation) and choose what makes the team most efficient. - Pricing and packaging: partner with the founders on pricing, tiers, security and white glove options, and value gating; be the eyes and ears on what customers will pay for. - Market signal: feed product and customer success with what you hear in the field, and represent Legal Ark AI at industry events. What Success Looks Like: You ramp quickly to a new business quota (target Year 1 new ACV of approximately $3,000,000, roughly 250 seats at current pricing), establish a repeatable motion, and lay the foundation for a team that carries the company toward its growth and exit goals. Who You Are: - A proven B2B SaaS closer who has built processes, not just worked someone else’s. - Experienced selling to SMB and moving deals upmarket; comfortable running the full cycle, from first touch to signature. - Energized by an early stage, commission only structure where your earnings track directly to the revenue you bring in. - A builder and leader who can hire, coach, and scale a small team. Someone who can sell a product that augments attorneys and their staff rather than replacing them, and who is comfortable leading with verification and confidence in the data rather than speed alone. - Legal tech, AI, professional services, or legal sales experience is a plus, not required. Compensation: Uncapped commission·Remote