42 startups hiring AI, backend and founding engineers

By turning raw video, audio and performance data into actionable learning signals, DeweyLearn lets educators and employers evaluate real‑world skill development and surface patterns that would otherwise stay hidden. Their AI‑powered analytics platform, trained on custom curricula and assessment frameworks, continuously refines a dynamic model of human learning across K‑12, higher education, career training and workforce programs. They’re looking for an ML Growth Engineer in the United States to help scale the model, joining a tight‑knit team of 2‑10.

Detecting genuine buying intent before a prospect even reaches your inbox is a perennial challenge, and Leadpoet tackles it with AI agents that crawl the web for real‑time signals, qualify leads on the fly, and surface a clear “why‑now” context for sales teams. The San Francisco‑based startup, currently a 2‑10‑person operation, is looking for a founding GTM engineer to help bring this intent‑driven pipeline to market.

Job seekers are tired of noisy listings and endless scrolling, so Matcha delivers a zero‑noise, AI‑powered matching service that turns a plain‑text prompt into curated role recommendations sent directly to inboxes as soon as they go live. The platform’s simplicity surfaces under‑the‑radar opportunities that traditional boards often miss, earning strong user love. They’re looking for a founding AI engineer to join the remote‑first team of 2‑10.

By turning the chronic mess of construction coordination into a unified BIM‑driven workflow, BIMraum lets planners, investors and on‑site teams see every detail of a project in real time, cutting waste and boosting sustainability. The Berlin‑adjacent startup, now a tight team of fewer than ten, is looking for a co‑founder who will serve as CTO / lead developer to shape the platform’s core technology.

Helping families access quality tutoring from preschool through secondary school, STAAC Professional E‑Learning runs a virtual academy that pairs qualified tutors with engaging, curriculum‑aligned lessons to make learning effective and enjoyable anytime, anywhere. The small team in San Francisco is looking for a founding AI engineer to shape the platform’s intelligent features.

Finding a technical co‑founder or reliable engineering partner is notoriously tough, so foundermatcha built a mobile‑first, gamified speed‑networking platform that matches founders with vetted software engineers on skills, vision and personality. Co‑developed with entrepreneurship and psychology experts, the app aims to turn quick, values‑aligned chats into real product launches. They’re looking for a founding engineer to help shape the fintech/AI automation layer that powers the property‑lending matchmaking flow.

Helping people navigate an ever‑shifting job market, SalveLab delivers AI‑driven mini‑assessments that surface strengths, suggest skill‑building steps and map out personalized career plans. The Amsterdam‑based team of fewer than ten engineers is now looking for a senior backend engineer (Ruby on Rails) to deepen the platform’s data pipelines and recommendation engine.

Scaling code from a single instance to hundreds of cloud servers is a hidden bottleneck for many data‑heavy teams, and Beam’s platform abstracts that complexity into a turnkey, scalable data infrastructure. Their product lets engineers push code and instantly get a distributed, production‑grade environment without managing the underlying ops. They’re looking for a Product Engineer in New York to help shape the next iteration of the platform.

Companies racing to embed AI often outpace their ability to secure it, and Junus AI tackles that gap with a platform that surfaces every model a team touches, lets admins redact or block data in real time, and records a tamper‑proof audit trail for regulators. Their shipped products—Shield Web for browser‑level protection and Shield Control for discovery, policy enforcement and reporting—are already in use by mid‑size firms that lack dedicated security teams. They’re looking for a senior full‑stack engineer in the United States to help extend the platform.

Businesses looking to boost EBITDA by cutting manual toil are turning to AI‑driven automation, and Stackfix delivers a platform that modernizes legacy workflows and systems with applied intelligence. The London‑based team of 2‑10 engineers is now adding a Founding Applied AI Engineer to deepen the platform’s capabilities.

Swedish home‑buyers now get a personal AI advisor that crunches a housing association’s finances, maintenance plans and fee trends in minutes, scans new listings daily for matches, and even suggests local agents through a browser extension that layers insights onto Hemnet, Booli and Boneo. Hemlo’s platform is aimed at demystifying the most stressful purchase decision by turning scattered, jargon‑heavy data into transparent, on‑demand guidance. The team of 2‑10 in Stockholm is looking for an AI Product Engineer to advance this advisory stack.

Industrial firms still wrestle with manual variant creation from quote to production planning, so wailand’s AI‑driven engineering automation platform stitches together workflow orchestration, knowledge graphs and domain‑specific AI agents to reuse product knowledge and keep existing PLM, ERP and CAD systems intact. By automating offer generation, variant derivation and work‑plan creation, the platform cuts engineering effort and shortens time‑to‑market for German manufacturers. The team of 2‑10 is looking for an AI Engineer (Agentic AI Platform) in the Greater Heilbronn Region.

By letting affluent shoppers pre‑order runway pieces before they hit the broader market, ÉSLUMIÈRE turns the traditionally opaque luxury‑fashion release cycle into a curated, concierge‑level experience that blends heritage craftsmanship with emerging design. The Lisbon‑based team of fewer than ten is now looking for a senior full‑stack developer to own both front‑ and back‑end work on the platform.

Nebulai runs the world’s first Intelligent Solutions and Talent Marketplace, linking enterprises to vetted human AI specialists and autonomous AI agents so they can source expertise and ship AI‑driven products faster. The company, which now employs between 11 and 50 people, is looking for an AI Deployment Engineer in the United States to help scale the platform’s solution‑delivery pipeline.

Finding talent without wading through endless résumés is a persistent pain point for many companies, and MeeBoss tackles it by pairing a job‑matching engine with a direct‑chat interface that lets employers and candidates connect instantly and assess fit in real time. The 11‑to‑50‑person team is now looking for a Software Engineer in the United States to help scale the platform.

Customer‑facing AI agents need reliable, extensible access to the myriad services they interact with, and Nango provides a unified API integration layer that connects agents to more than 1,000 external APIs via 7,000+ pre‑built tools for auth, calls, triggers and syncs, with deployment options ranging from Nango Cloud to BYOC or self‑hosted. The team of 11‑50 engineers is now looking for a founding Developer Relations person to help shape how developers discover and adopt the platform.

Ensuring private data moves freely without exposing it to breaches is a growing challenge for enterprises, and EchoMark tackles that by delivering a SaaS suite of information‑security and privacy tools that let organizations share sensitive information safely. The Bellevue‑based team of 11‑50 engineers is looking for a Backend Engineer to help extend the platform’s core services.

Revion is rethinking the software stack that runs fixed‑operations teams in automotive service centers, giving shops a unified view of appointments, parts inventory and labor productivity so they can cut downtime and boost margins. The London‑based startup, now a team of 11‑50 people, is looking for a founding engineer to help bring the next generation of its platform to market.

Travelers can rack up airline miles not just from flights but from hotels and everyday purchases, layering on top of existing credit‑card rewards—a model that’s already caught the eye of Forbes, the Wall Street Journal and broadcast outlets. Rove’s New York‑based team of 11‑50 engineers is looking for mid‑to‑senior software engineers to help expand the platform.

Idle games thrive on the sweet spot between simplicity and depth, and Playsaurus has been polishing that balance since 2011 with titles that keep players coming back for quick, satisfying loops. The Southern‑California studio, a tight team of 11‑50 creators, is now looking for a LATAM‑based Game Developer with strong JavaScript chops to expand its portfolio.

Private capital firms are getting an AI‑powered operating system that ingests every memo, conversation and decision across a fund, turning the entire data estate into a searchable knowledge layer that can answer complex investment questions and automate deal‑sourcing, due‑diligence and portfolio monitoring. Capsa AI, built by former investors and AI engineers and trusted by leading funds in the UK, Europe and the US, is expanding its London team and looking for senior‑level AI engineers to deepen the platform’s modeling and retrieval capabilities.

Back pain patients can now get a full treatment pathway without ever waiting for an appointment, thanks to a platform that blends AI‑driven assessment with human physiotherapists and is cleared as a Class IIa medical device. The service, which handles everything from self‑referral to multidisciplinary care for NHS Trusts, is built by a team of 11‑50 in Cambridge. Flok Health is looking for a Staff Software Engineer to help scale the platform.

Unmet needs in defense and government agencies often stall because traditional vendors can’t pivot quickly enough, and Valinor’s hybrid go‑to‑market and decentralized engineering model lets it spot those gaps and ship right‑sized solutions straight to users. The New York‑based team of 11‑50 engineers is now adding a backend software engineer to strengthen the platform that underpins those rapid deployments.

Developers and enterprises looking to run image, video, and world‑model workloads at scale now have a full‑stack infrastructure that can deliver the same fidelity up to a hundred times faster and cheaper. Nunchux AI builds that generative media platform, pushing the limits of today’s hardware to make high‑quality media generation practical for production use. The team of 11‑50 engineers in San Francisco is hiring a Machine Learning Engineer focused on visual generative models, covering post‑training and evaluation.

Factories that still rely on manual assembly are getting a data lift: Almetra’s AI‑driven process‑analytics platform stitches live camera feeds into a continuous view of material flow, cycle times and step sequencing, then aggregates the signals into actionable insights for plant managers. The Berlin‑based team of 11‑50 engineers is looking for an AI Edge Deployment Engineer to bring those vision models onto the shop floor.

Modernizing the way German medical practices handle reimbursements, adesso health solutions builds cloud‑based billing software that lets Kassenärztliche Vereinigungen process claims more efficiently and at lower cost. The platform is developed in close partnership with its customers to stay aligned with the evolving needs of the healthcare system. They are looking for a senior frontend engineer with Angular expertise to join their 51‑200‑person team in Essen.

Self‑custody of Bitcoin remains the hardest part of owning the asset, and Bitkey tackles that by pairing a mobile app with dedicated hardware and recovery tools that let users hold their keys offline yet stay in control. The Seattle‑based team of 51‑200 engineers is now looking for a Staff Machine Learning Engineer (Modeling) and a Support specialist to help tighten security and improve the user experience.

Capturing the flood of user clicks that happen when shoppers discover products via ChatGPT, Google Overviews and similar interfaces, Searchable turns those fleeting signals into actionable analytics for brands looking to understand and improve product discovery. By aggregating millions of interactions, the platform helps marketers pinpoint friction points and optimize the paths that lead to conversion. The London‑based team of 51‑200 is currently looking for a Senior Engineer to help scale this click‑stream infrastructure.

Mobile gamers crave quick‑to‑learn, endlessly replayable experiences, and Naphora Games Group answers that demand by engineering hybrid‑casual titles that blend high‑performance tech with data‑driven design, aiming to become a top‑10 global mobile publisher from the Middle East. The Riyadh‑based studio, now operating a 51‑200‑person team, is looking for a senior gameplay programmer in Portugal to help shape its next wave of scalable games.

Vacation hosts spend countless hours juggling listings across dozens of booking sites, often ending up with double‑bookings and missed reviews. Smooje’s all‑in‑one channel manager syncs calendars, rates and reservations in real time, letting hosts automate workflows and focus on guest experience. The Berlin team of 51‑200 is looking for a senior PHP back‑end engineer to help keep the platform reliable and scalable.

Buying a van shouldn’t feel like a negotiation marathon, and Vanaways has built an online marketplace that pairs businesses and individuals with the right vehicle, offering a full suite of finance options and free UK delivery. The platform’s streamlined, sales‑free experience has already moved over £100 million in vans a year, and the team of 51‑200 is looking for a Quality Assurance Engineer in Pill, England to help keep the service reliable as it scales.

Finci lets businesses across 31 countries run a single multi‑currency account, handling everything from SEPA and SWIFT transfers to instant blockchain‑powered payouts through an easy‑to‑use dashboard backed by dedicated account managers. The platform also offers temporary accounts for rapid company formation and a Mastercard‑sponsored BIN program for co‑branded cards. They are looking for a senior Java developer to join their 51‑200‑person team in Riga.

Residential agents and brokerages need a single source of truth for listings, market trends and transaction workflows; Perchwell delivers that with a modern data engine that stitches MLS feeds into a unified platform for agents, brokerages and MLSs to streamline their day‑to‑day work and close more deals. The New York‑based team of 51‑200 is now looking for a Senior QA Engineer to help ensure the reliability of this real‑estate data workflow platform as it scales.

Enterprise due‑diligence is getting a tech upgrade: Xapien’s AI‑driven platform scans a company’s entire third‑party ecosystem to surface reputational and regulatory red flags with enterprise‑grade speed and accuracy. Built by veterans of intelligence and financial‑crime work, the service now powers risk assessments for some of the world’s largest corporations, consultancies, law firms and major nonprofits. The London‑based team of 51‑200 is looking for a Senior Backend Engineer.

Fundment’s fintech platform lets financial advisers open accounts, move money, manage investments and run custom indexing all through a single, secure interface, turning advice into action for tens of thousands of investors across the UK. The London‑based team of 51‑200 is looking for a Python Software Engineer to help extend the core product that bridges advisers’ expertise with their clients’ goals.

By turning EVs, batteries and heat pumps into market‑ready resources, Axle’s platform squeezes every kilowatt of flexibility into revenue‑generating signals that help push fossil fuels off the grid. The London‑based team of 51‑200 engineers is looking for a Software Engineer to extend the core optimization stack.

Enterprises still wrestle with fragmented hiring data and manual workflow bottlenecks, so Bright Vision’s Lumina platform stitches AI‑driven candidate sourcing, semantic resume matching and blockchain‑verified credentials into a single talent‑intelligence hub that plugs into existing HR, ERP and CRM systems. The product, built on a cloud‑native microservices stack across AWS, Azure, GCP and OpenShift, is already delivering 40‑60% efficiency gains for firms in finance, healthcare and manufacturing. Bright Vision is looking for a Backend Developer (Go) to join its 51‑200‑person engineering team in Brentwood, TN.

By turning everyday routines into seamless, goal‑driven experiences, they’ve built a portfolio of more than 30 fitness, productivity, creative and learning apps that collectively pull in 3 million monthly downloads and 100 million installs worldwide. Their AI‑first approach to mobile design aims to simplify users’ lives while fostering well‑being, and the Copenhagen office is looking for an iOS Engineer to help extend that ecosystem.

Companies often struggle to turn cutting‑edge AI research into revenue‑generating products; JAAI tackles that gap by building scalable AI solutions—spanning language processing, computer vision, big data and robotics—and then spinning successful prototypes into independent subsidiaries that can grow with dedicated shareholdings and partners. The firm, which now employs 51‑200 specialists, is looking for an AI Engineer (all genders) to join its HUB.KI team in Germany.

Spain’s biggest price‑comparison engine has expanded from hotels and car rentals into a fully online car‑insurance marketplace, leveraging AI‑driven tech to deliver a final‑price guarantee and seamless checkout. The Madrid‑based team of 51‑200 engineers is looking for a senior full‑stack developer skilled in Symfony and Vue JS to help evolve the platform.

More than two million young adults rely on LineLeap to skip lines, pay cover charges and buy tickets at over 850 bars and venues, turning night‑out logistics into a seamless, rewards‑driven experience. The platform also gives venues a direct marketing channel and lets beverage brands create on‑premise connections that were previously impossible. The New York team of 51‑200 is looking for a senior software engineer to help extend the app’s core ticketing and rewards functionality.

Bridging hands‑on learning with real‑world employability, the platform weaves practical courses, talent upskilling and custom digital solutions into a single ecosystem that helps individuals pivot careers while giving companies a ready pipeline of tech‑savvy talent. To keep the stack as adaptive as its curriculum, the team of 51‑200 engineers in Spain is looking for an AI‑native software engineer.