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About TwinTwin is building fully autonomous AI agents that run real business operations.You give a goal.Twin figures out the steps.It executes them end-to-end through APIs when they exist and through the browser when they don't.This is not another chatbot.This is not another workflow builder.We are building systems that can operate companies.In the first months of beta, users have already deployed more than 100,000 agents running lead generation, customer support, operations, trading systems, e-commerce workflows, reporting, and entire service businesses.Twin was founded by Hugo Mercier, CEO (founder of Dreem, $60M raised, 150+ employees, acquired) and João Justi, CTO (cryptography, compilers, virtual machines, distributed systems, ex-Zama) but also Julius de Bruijn, creator of Tiberius (3.3M downloads) and Patrick TourniaireWe raised a $10M seed round led by LocalGlobe and are building with a small team of senior engineers.Why join Twin?Work on one of the hardest problems in software: making AI agents reliable enough to run real businesses.Build from first principles: many of the core abstractions don't exist yet.Small team, massive ownership: your decisions directly shape the product, architecture, and company.Rust at the core, product at the center: not infrastructure for infrastructure's sake.Design systems for both humans and AI agents: a new software paradigm that barely exists today.Early enough to matter: every engineer has outsized impact on what Twin becomes.What you'll work onMost AI companies are focused on generating text or code.We are focused on making AI systems reliably execute real work.You will work on some of the hardest problems in autonomous agents:Browser execution at scaleLow-latency communication between agent subsystemsReliable orchestration of long-running workflowsMemory systems that improve over timeSelf-healing execution architecturesAgent infrastructure that survives failuresProduct features used directly by customersInternal systems that AI coding agents can understand, operate and extendPart of the challenge is not simply writing software.The challenge is designing systems that remain understandable and modifiable by AI coding agents themselves. The way we build software internally increasingly assumes that both humans and coding agents will interact with the codebase.What we're looking forWe're not looking for a "Rust developer".We're looking for engineers who can own problems from idea to production.You should probably have:Significant production Rust experienceStrong systems thinkingExperience building and operating real productsHigh autonomyAbility to navigate ambiguityInterest in AI systems and LLMsCuriosity across the entire stackYou may come from:InfrastructureDatabasesDistributed systemsDeveloper toolsBrowsersNetworkingCompilersRuntime systemsAI infrastructureWhat matters most is your ability to build robust systems and make good product decisions.What tends to work well hereThe engineers who thrive at Twin usually:Ship fastTake ownership without waiting for permissionCare deeply about product outcomesPrefer building over discussingEnjoy working close to usersCan move between infrastructure and product workMany of the strongest engineers we know have backgrounds as founders, open-source maintainers, systems engineers, or product-minded infrastructure builders.What won't workThis role is probably not for you if:You need detailed specifications before startingYou prefer working on isolated technical componentsYou only want to work on backend infrastructureYou are uncomfortable making product decisionsYou dislike ambiguityYou expect large-company processesExamples of backgrounds we find excitingEngineers who built widely-used open-source infrastructureEarly engineers from highly technical startupsSystems engineers who became product buildersFounders who built technical products from scratchDevelopers who combine deep technical expertise with strong product intuitionCompensationPackage 200 - 250 KWe're building for the long term and want people who think like owners.Compensation Range: €200K - €250KOur Compensation PhilosophyWe believe exceptional people should be rewarded like owners, not employees.Most companies optimize compensation around salary. We optimize around value creation.That means we aim to provide a strong cash package, but we intentionally place a significant portion of the upside in equity. Not because it's cheaper for the company, but because we believe the people building the future of Twin should directly participate in the value they create.We're not looking for people who want to maximize next year's income. We're looking for people who want to maximize the value they can create over the next decade.At Twin, we think of our team as founders in spirit. The decisions you make, the products you build, and the speed at which you execute can materially change the trajectory of the company. When that happens, we believe you should benefit from it.Joining a company at our stage is not risk-free. We are transparent about that. But we are also no longer operating on a vision alone. The company has demonstrated exceptional traction, and we believe the opportunity ahead is unusually large.For many startups, equity is a lottery ticket.We don't view it that way.We view equity as ownership in a business that is already proving product-market fit and is scaling at an extraordinary pace.Our goal is simple:Provide enough cash so you never need to worry about paying your bills.Provide enough ownership so that if Twin succeeds, it can be genuinely life-changing.We want every person who helps build Twin to have the opportunity to share meaningfully in the outcome.Last wordsThe software industry spent the last decade building SaaS.The next decade will be about autonomous companies.We believe AI agents will not just assist people.They will operate businesses.If that future sounds inevitable to you, we'd love to talk.
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