Senior Security Software Engineer, v0

ABOUT VERCEL: Vercel is the agentic infrastructure company. We free people and agents to ship what’s next. For more than a decade, Vercel has shaped how the web is built. As the team behind Next.js, v0, and AI SDK, we create products that help builders move from idea to production with speed, security, and exceptional developer experience. Now, software is entering a new era, and the next generation of products will not just be used by people. They will be built, extended, and operated by agents. We are building the platform for that future, trusted by companies like OpenAI, PayPal, Ramp, Supreme, and millions of developers worldwide. Whether you’re building our products, supporting our customers, growing our community, or shaping our story, you’ll help define what comes next. ABOUT THE ROLE: The CDN Content team is responsible for serving all content that flows through Vercel's global CDN — static assets, optimized images, incrementally regenerated pages, partially prerendered shells, and everything in between — to billions of requests for millions of developers. Our focus is performance: ensuring content is served globally as fast as possible. Caching plays a big role in making that happen, and the team operates a multi-tier caching architecture spanning in-process caches, regional cache services, and object storage across 20+ regions. As a Software Engineer on the team, you'll take on well-scoped projects with real production impact and grow into owning larger pieces of the system. The work spans the serving path end to end, and everything ships through careful, progressive rollouts validated with production data. You'll learn how a planet-scale CDN works from engineers who built it. This is a team where infrastructure meets product: we work in close partnership with frameworks such as Next.js, bringing framework-defined infrastructure to life on Vercel's CDN, and the serving and caching behavior we ship directly shapes the performance and cost that millions of developers see. You'll develop strong instincts for distributed systems, careful production rollouts, and data-driven engineering. If you're based within a pre-determined commuting distance of one of our offices (SF or NY), the role includes in-office anchor days on Monday, Tuesday, and Friday. If you're located beyond that distance, the role is fully remote. For location-specific details, please connect with our recruiting team.   WHAT YOU WILL DO: * Build and improve the services behind ISR, PPR, and image optimization — working in Go, Lua, and TypeScript across the serving path. * Execute well-defined projects independently, from implementation through safe rollout (feature flags, shadow modes, progressive deployment) and post-ship validation. * Monitor and maintain your work in production: build dashboards, add metrics and alerts, and develop ownership of what you ship. * Contribute to the team's observability and testing surface — the dashboards, logs views, and e2e test suites that keep a high-change system trustworthy. * Participate in the on-call rotation with support from senior engineers, and contribute to incident follow-ups that make the system more resilient. * Collaborate with teammates and partner teams (Next.js, CI/CD) through design discussions, code review, and pairing.   ABOUT YOU: * 2+ years of experience building and operating backend services in production. * Proficiency in at least one of Go, TypeScript/Node.js, or a comparable systems language, and enthusiasm for working across a polyglot stack. * Solid understanding of HTTP and web fundamentals — caching headers, request/response lifecycle, what a proxy does. * You write code you're willing to operate: tested, instrumented, and documented. * Curious about how large-scale systems work, and motivated to dig into unfamiliar code and production data to figure things out. * A collaborative teammate who communicates clearly, asks good questions, and follows through reliably.   BONUS IF YOU: * Have experience with caching systems (CDNs, Redis/Memcached, application-level caches) at any scale. * Have AWS experience, particularly S3 or ElastiCache. * Have used Next.js or another modern web framework and understand rendering modes like SSR/SSG/ISR. * Have experience with observability tooling (Datadog, Honeycomb, or similar). * Have experience with Terraform or Kubernetes.   BENEFITS: * Competitive compensation package, including equity. * Inclusive Healthcare Package. * Learn and Grow - we provide mentorship and send you to events that help you build your network and skills. * Flexible Time Off. * We will provide you the gear you need to do your role, and a WFH budget for you to outfit your space as needed. The San Francisco, CA base pay range for this role is $172,000 - $258,000. Actual salary will be based on job-related skills, experience, and location. Compensation outside of San Francisco may be adjusted based on employee location. The total compensation package may include benefits, equity-based compensation, and eligibility for a company bonus or variable pay program depending on the role. Your recruiter can share more details during the hiring process.  Vercel is committed to fostering and empowering an inclusive community within our organization. We do not discriminate on the basis of race, religion, color, gender expression or identity, sexual orientation, national origin, citizenship, age, marital status, veteran status, disability status, or any other characteristic protected by law. Vercel encourages everyone to apply for our available positions, even if they don't necessarily check every box on the job description.

Tacto builds AI-powered software for strategic procurement teams in manufacturing. Our product is evolving fast: we're introducing agentic capabilities that handle larger units of work autonomously - and come back to users when decisions are needed or results are ready. That shift demands a new kind of interface. Not just new screens, but new patterns for how humans and AI agents collaborate. And those patterns need to be built, not just designed. As a Design Engineer, you deeply understand a problem, then design, build, and ship a solution - often autonomously. You contribute directly to the codebase: building features end to end, crafting polished interactions, and ensuring that what ships feels as good as it works. You think like a designer and build like an engineer. You'll join a small design team and work embedded with engineering squads to ship product. WHY THIS ROLE MATTERS Engineering velocity at Tacto is high. Features move from idea to production fast - AI-assisted development is the default. That speed is a strength, but it creates a real challenge: the gap between what's designed and what's shipped keeps growing, interactions get neglected, and polish falls through the cracks. We need someone who closes that gap by being in the code. Not a design system caretaker, but a builder who ships features with high craft - and who naturally improves the shared foundations along the way. Someone who obsesses over the details that make a product feel great: the transitions, the keyboard interactions, the edge states, the moments of delight. YOUR IMPACT In this role, you will: * Design, build, and ship features autonomously - from understanding the problem, through design exploration, to production frontend code that users interact with. You own the result, not just a layer of it. * Craft polished interactions and experiences - you obsess over the details that make a product feel exceptional: transitions, micro-interactions, keyboard behavior, responsiveness, accessibility. * Prototype agentic interactions in real code - the flows where AI agents present results, request decisions, and show progress can't be mocked up in Figma. You build them so the team can see and feel them. * Raise the quality floor across the product - review PRs, jump into feature branches, and make sure shipped features feel right. As you build, you naturally strengthen the shared UI foundations and component library that the whole team relies on. * Bridge design and engineering - you work closely with designers on what's next, and with engineers on what ships. You skip the handoff: instead of waiting for specs, you shape the solution in Figma or code, whichever gets there faster. WHO YOU ARE We're looking for a block-shaped designer - not a T-shape with one deep skill, but someone genuinely strong across multiple disciplines. In your case, the block leans technical: you're an engineer who thinks like a designer, or a designer who builds like an engineer. Either way, you ship real code and care deeply about how it feels. You'll be a great fit if you: * Have strong frontend engineering skills - you write production-quality React/TypeScript and you're comfortable owning code that goes to customers. * Have a real design sensibility - you notice when spacing is off, when an interaction feels sluggish, when a flow doesn't communicate what it should. You don't need someone to hand you a pixel-perfect mock to build something good. * Prototype in code as your default mode. When exploring an idea, you'd rather spin up a working version than make a static mockup. * Care deeply about craft and polish - transitions, animations, keyboard behavior, cross-browser consistency, accessibility. The details behind the pretty pixels. * Use AI tools as core leverage in your daily work - Claude, Cursor, v0, ChatGPT, or whatever makes you faster. You organize your workflow around these tools and push what's possible. * Can work autonomously across the full scope - comfortable going from a rough problem to a shipped feature, making design decisions along the way. Bonus points if you: * Have worked on products where AI behavior needed to be surfaced clearly to non-technical users, * Have experience with motion design, micro-interactions, or advanced CSS/animation, * Have contributed to design systems or component libraries - not as a full-time job, but as a natural byproduct of building great product. OUR BACKGROUND Tacto is building the intelligence layer that connects AI to the physical world of manufacturing, starting with procurement. AI is transforming every industry, but it stops at the factory gate. The knowledge that holds manufacturing together - part costs, suppliers, materials - is scattered across systems and people. Over 50% of a product's cost originates from suppliers, making procurement the single largest cost lever in manufacturing and the missing connection between the digital and the physical world. Yet it still runs on Excel and legacy systems. We're changing that with our Procurement Intelligence Platform, trusted by hundreds of companies running billions of Euros of material. Based in Munich, we are 100+ passionate builders who are in-office, with high expectations, fast growth, and a lot of fun. We are supported by >€50m from Sequoia, Index, and Europe's leading tech entrepreneurs and industry veterans. WHY IT MATTERS Manufacturing forms Europe's economic backbone, driving a fourth of Europe's GDP and providing over 30% of jobs. These hidden champions and global market leaders manufacture the physical world around us, from the machines that build our cities to the medical devices that save lives. But the world is changing. The US dominates the digital world of bits. China is scaling the world of atoms, manufacturing at unprecedented speed and scale. Geopolitics are more uncertain than ever. Europe's strength lies in its deep industrial knowledge through generations of engineering. Manufacturing worldwide runs on European machines and software. But that heritage is only an advantage if we leverage it in the age of AI. Tacto builds the AI that connects Atoms and Bits, empowering our Industrial Base to Stay Stronger and building a lighthouse for European tech. WHAT WE OFFER The people at Tacto are passionate about building the organization, growing themselves, and our product while having fun and being real. We have high expectations, great talent density, and a culture where your ambition, performance, and agency are what count - not where you come from or how big your ego is. You'll grow at the forefront of AI, have real ownership and impact, and be surrounded by the best people in their field who challenge you and make you better every day. That is demanding and rewarding, but that's where we thrive. Besides that you have: * Money: Competitive salary & equity in the company with real upside, so you are invested in our success * Workplace: A vibrant in-office culture (> 4 days/week) in a beautiful office in central Munich * Development: A development budget and regular exposure to exceptional people, e.g., Lunch & Learns, peer mentoring, external speakers * Time off: 26 + 4 vacation days per year (4 fixed “company rest days”) as well as regular off-sites and team events * Health: Wellpass membership, of course, a fruit basket (!), and access to Jobrad, for your health * Family & Social Security: Voluntary pension contribution, voluntary KITA subsidy for your children Tacto is an equal opportunity employer. We are committed to equal employment opportunity regardless of race, religion, sexual orientation, age, marital status, disability, or gender identity. 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