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INTERFAZE
AI model for deterministic developer tasks (OCR, web scraping, classification, STT)
Last verified August 17, 2026 · Updated daily
What INTERFAZE is building
Every LLM application is a context problem. The dominant approach today is to pick the best monolithic transformer and throw your inputs at it. Interfaze's argument is that this is wasteful and often wrong: tasks like OCR on complex PDFs, web scraping from dynamic pages, multilingual speech recognition, and text classification require deterministic, high-accuracy outputs that general-purpose LLMs systematically underdeliver. Interfaze is built on a different architecture: a stack of heterogeneous specialised DNNs and small language models that handle perception and extraction, paired with a context-construction layer that crawls, indexes, and parses external sources into compact structured state, and an action layer that can browse, retrieve, execute code, and drive headless browsers. A thin controller sits on top and exposes a single OpenAI-compatible endpoint, deciding which specialised model to call and forwarding distilled context to a user-selected LLM for the final response. The benchmarks are notable: Interfaze-Beta hits 83.6% on MMLU-Pro, 91.4% on MMLU, 81.3% on GPQA-Diamond, and 90.0% on AIME-2025, with strong multimodal scores across ChartQA (90.9%) and AI2D (91.5%). The paper was accepted at IEEE CAI 2026.
Why this matters
The vibe of the current AI market is that bigger, more general models win everything. Interfaze's technical bet runs the opposite direction: for the tasks that actually show up in production, the tasks that companies pay for and that must be right 99% of the time, a specialised small model ensemble beats a monolith on cost, accuracy, and consistency. This matters to developers building real systems. A healthcare company using OCR to extract structured data from medical records cannot run on 90% accuracy. A government system scraping regulatory documents needs reproducible outputs. JigsawStack, the company's previous name under which they built the developer tooling platform, already had paying enterprise customers before YC. The pivot to Interfaze is a doubling-down on the core technical insight from that work: the bottleneck in AI applications is not generation, it is reliable extraction and perception. YC P26 is widely considered one of the strongest batches in the accelerator's history, which adds institutional validation.
Open roles at INTERFAZE
2 positions we're tracking. Roles are re-checked daily and removed when filled.
Know when INTERFAZE is hiring before anyone else
A role stays uncontested for about four days. Here's the window — and where we put you in it.
From $9/month, cancel any time.
Watching INTERFAZE
0 applicantsRole spotted & verified
1You get the alert
1You've applied
~8Hits the job boards
250+Hiring outlook
Very High. Two founding-level roles live now. The YC P26 batch just completed Demo Day on March 24. Interfaze has real production traction before YC, which is the signal. Reach out now before recruiting picks up momentum.
Working at INTERFAZE
Founded in , INTERFAZE is AI model for deterministic developer tasks (OCR, web scraping, classification, STT). They're now <50 people. For a B2B, Infrastructure company this size, the reality is broad remit, direct access to founders, and equity that still means something if the company works out.
The majority of roles are in San Francisco, CA, USA.
How to actually get hired at INTERFAZE
Why applying the normal way doesn't work
At <50 people, INTERFAZE has no recruiting team. Your application lands with a founder who is also running sales, product and payroll. The obstacle isn't a queue or an ATS, it's being seen at all. Cold outreach outperforms the form here, consistently.
Who to contact at INTERFAZE
Founding team
Yoeven studied at Imperial College London, one of the world's top engineering institutions, which is where his technical foundation developed before he moved into building full-time. His career before Interfaze is a pattern of shipping before asking for permission. He co-founded Stayr, a travel startup, before pivoting into JigsawStack, the developer API platform that became the direct predecessor to Interfaze. JigsawStack was not a pre-revenue bet: it had paying developer customers, processing billions of tokens monthly across healthcare, finance, and government use cases before YC came into the picture. Before founding, he and his team won the world's largest AI hackathon with a project called fly.travel, a real-time AI travel planning tool, which tells you something about how he approaches a new problem. He is prolific on GitHub, with 54 public repositories including an AI video search engine sitting at 627 stars, which he built as an open-source proof of concept. He is active on LinkedIn and X (@yoeven), posts regularly about developer tooling and AI infrastructure, and has made himself directly reachable at yoeven@jigsawstack.com. His public philosophy is plainly stated in his GitHub bio: "Building to my heart's content."
Harsha is the first named author on the Interfaze arXiv paper and the primary research engine behind the company's technical architecture. His background is a precise fit for what Interfaze is building: he holds an M.Sc. in Computer Science from Purdue University, with verified research activity on Google Scholar under his Purdue email, and his listed specialisms are Artificial Intelligence, Computer Vision, Natural Language Processing, and Reinforcement Learning. That quartet is not incidental. The Interfaze architecture requires exactly this cross-disciplinary depth: CNN/DNN perception models for OCR and visual extraction, NLP for classification and speech-to-text, and systems thinking for the controller layer that routes inputs to the right specialised model. Before Interfaze, Harsha was a founding member at JigsawStack, the developer API platform that Interfaze evolved from, where he led research. He also volunteers as a peer reviewer for Springer Nature's Journal of Progress in Artificial Intelligence, which is a meaningful signal about how seriously he takes research rigour: peer review is unpaid, unglamorous, and only done by people who care about the quality of the field's output. For a startup founder, it suggests someone who thinks carefully about what constitutes a valid claim, which matters when you are building a product that promises deterministic accuracy rather than probabilistic best-effort.
What to show them
Interfaze has billions of tokens flowing through it monthly from enterprise customers in regulated industries. The engineering challenge is not building a demo, it's keeping a specialised model inference stack reliable, observable, and fast across diverse enterprise inputs: complex PDFs, dynamic web pages, multilingual audio, and more. This is a founding-level role with direct impact on the core product. Core skills: TypeScript or Python, API design, distributed inference, developer tooling, headless browser automation (Playwright or Puppeteer), streaming LLM responses, cloud infrastructure, developer experience. Proof of work: Use the Interfaze API (or the JigsawStack API, which is the same underlying stack) to build a small demo that chains OCR on a complex PDF with web scraping and classification into a single pipeline. Write a brief technical note on where the output was more reliable than a GPT-4 call would have been. Send it to Yoeven with your application. It's the most direct proof that you understand what they're building.
A cold email that works at INTERFAZE
What INTERFAZE screens for
The careers page states: thousands of production systems, billions of tokens processed monthly, healthcare, finance, government, and SaaS customers. For a YC P26 company, this traction is unusual. Most YC companies arrive with a demo. Interfaze arrived with production workloads. The two founding roles signal the exact stage: full-stack engineering to build the product surface, and growth to build the developer community and commercial funnel. Yoeven has been the most vocal public presence for the company, posting on LinkedIn about the YC acceptance and maintaining an active GitHub (54 repos, including an AI video search engine with 627 stars). He also won the world's largest AI hackathon before founding Interfaze, which tells you something about how he thinks about proofs of work. The founding team is small: two named co-founders and roughly four to six people total. Every hire at this stage is a founding-level hire in practice.
A tailored CV beats a generic one. Use INTERFAZE's job description language to clear filters.
Don't make these mistakes
Sending a generic "I love AI APIs" email. Yoeven is a serial builder who ships before he fundraises. He won a hackathon, built a production API platform used by thousands of developers, published an IEEE paper, and got into YC all before the typical "we built an AI startup" narrative. The fastest way to get his attention is to have used the product and have something specific to say about the architecture or the benchmarks. Reference the paper. Show the work.
Mistakes that kill INTERFAZE applications
A recycled CV gets rejected fast at INTERFAZE (<50 people). They notice.
Skip 'I'm looking for...' — start with The vibe of the current AI market is that bigger, more general models win everything and your specific angle on solving it.
Applying and waiting = silence. Follow up at day five — it roughly doubles your odds of a reply.
Applying to INTERFAZE? Get the contact, not the form.
The INTERFAZE interview process
3 stages · 7 days typical · take-home: no · modelled from similar companies
We don't yet have verified candidate reports for INTERFAZE. What follows is the typical process for a <50-person B2B, Infrastructure company — treat it as a model, not confirmed detail.
Interview stages
Intro Call
Video call · 30 min
Culture fit and role expectations
Founder or hiring manager
Technical Deep Dive
Video call or in-person · 60 min
Past projects and problem-solving approach
Technical founder or lead
Final Round
In-person or video · 45 min
Team fit and offer discussion
Founding team
INTERFAZE interview timeline
Expect days total. Compared to similar B2B, Infrastructure companies (10 days median), INTERFAZE is faster.
Interviewed at INTERFAZE?
Tell us how it went — stages, questions, timeline. Takes 90 seconds and it's how this page stays accurate for the next person.
Submit your INTERFAZE interview experience →INTERFAZE jobs, frequently asked questions
How many jobs does INTERFAZE have open?
2 open roles at INTERFAZE, last checked April 2026.
Does INTERFAZE hire remotely?
INTERFAZE doesn't have remote openings at the moment. All roles are in San Francisco, CA, USA.
What roles is INTERFAZE hiring for?
INTERFAZE is hiring across Engineering, Marketing. The most recent opening is Founding Full Stack Engineer.
How do I apply for a job at INTERFAZE?
Apply via the links above. For tips, read our guide on how to get hired at INTERFAZE.
Does INTERFAZE respond to cold emails?
Response rate data for INTERFAZE not yet confirmed.
Who is the hiring manager at INTERFAZE?
At this size, hiring is usually run by a founder or department head.
What ATS does INTERFAZE use?
INTERFAZE uses Greenhouse.
How competitive is it to get hired at INTERFAZE?
Expect 50-100 applicants in the first two weeks for B2B, Infrastructure roles at this size. Apply within 72 hours for best odds.
How many rounds is the INTERFAZE interview?
3 stages: Intro Call, Technical Deep Dive, Final Round.
Is the INTERFAZE interview hard?
Focus on relevant experience and culture fit, not puzzles. Final Round is reportedly the most challenging round.
Does INTERFAZE give a take-home task?
No, INTERFAZE does not include a take-home stage.
How long does INTERFAZE take to get back to you?
Around 7 days across the full process.
What should I prepare for the INTERFAZE interview?
relevant experience and culture fit is the priority. Show you can work autonomously — that matters more than algorithms at <50 people.
Where is INTERFAZE based?
INTERFAZE is headquartered in San Francisco, CA, USA.
Get INTERFAZE roles before they're posted
A role stays uncontested for about four days. Here's the window — and where we put you in it.
From $9/month, cancel any time.
Watching INTERFAZE
0 applicantsRole spotted & verified
1You get the alert
1You've applied
~8Hits the job boards
250+