--- title: 'Senior Software Engineer - AI Agents & Developer Platform at FeverUp' canonical: 'https://feeny.ai/job/senior-software-engineer-ai-agents-developer-platform-feverup-spain-0m2hsqfwycyr' type: 'job' last_seen: '2026-10-15' --- # Senior Software Engineer - AI Agents & Developer Platform at FeverUp - **Company:** FeverUp - **Location:** Spain - **Posted:** 2026-08-21 - **Last confirmed live:** 2026-10-15 - **Apply:** https://job-boards.eu.greenhouse.io/feverup/jobs/4956931101 ## Job description Hey there! We’re [Fever](https://feverup.com/), the world’s leading tech platform for culture and live entertainment. Our mission? To democratize access to culture and entertainment. With our proprietary cutting-edge technology and data-driven approach, we’re revolutionizing the way people engage with live entertainment. Every month, our platform inspires over 300 million people in +55 countries (and counting) to discover unforgettable experiences while also empowering event creators with our data and technology, helping them scale, innovate, and enhance their events to reach new audiences. Our results? We’ve teamed up with major industry leaders like Netflix, F.C. Barcelona, and Primavera Sound, presented international award-winning experiences, and are backed by several leading global investors! Impressive, right? To achieve our mission, we are looking for bar-raisers with a hands-on mindset who are eager to help shape the future of entertainment! Ready to be part of the experience? Now, let’s discuss this role and what you will do to help achieve Fever’s mission. ## About the role We're building the team that defines how AI transforms Product Engineering at Fever. This is a backend engineering role first: you need strong software fundamentals to build systems that scale and hold up in production. The AI expertise builds on top of that foundation. You won't just use agents, you'll build the harnesses, evals, and infrastructure that make them ship reliable, high-quality output across the entire company. You'll join the AI & DevEx team. Our mission is to raise the performance of Fever's whole Product Engineering organization, not just individual engineers, but entire squads (product, design, and engineering together) and everything that surrounds their work: CI/CD, observability, infrastructure, data, and how people communicate and coordinate. We look for the highest-leverage points in that chain and build AI-powered tools to improve them, always backed by measurement, not assumptions. ## What you'll work on - Agentic harness: Build the skills, sub-agents, guardrails, and verification systems that make agents produce high-quality, trustworthy output, for engineering and beyond. - Knowledge base: Build the shared knowledge substrate agents read from and write into, growing it from team-level to something that compounds across all of Fever. - Delivery substrate: Own the cloud dev environments, CI runtime, and autonomous-delivery rails that turn a request into an environment, an agent run, and a reviewable pull request. You're responsible for how fast and reliably this works. - AI across how squads work: Go beyond coding agents. Find where AI removes friction in planning, coordination, and communication across a squad's daily work. - Measurement: Build the evaluation and metrics systems (baselines, before/after comparisons, DORA metrics, lead time, real adoption) that ensure every change ships on signal, not vibes. - Inference economics: Optimize AI workflows for speed and cost: model routing, prompt caching, and choosing self-hosted vs. frontier models based on the quality/cost trade-off. - Engineering excellence: Testing, design patterns, CI/CD, and observability. Everything ships as production software, and you help set the bar for what good looks like. ## About you Must-have, engineering fundamentals - 5+ years building and operating production software at meaningful scale, with end-to-end ownership (not just shipping isolated features). - Strong software design fundamentals: testing, design patterns, clean architecture. - Backend depth: RESTful APIs, relational databases and SQL, distributed and event-driven patterns (queues, messaging) behind high-traffic services. - Full production ownership: CI/CD, observability, infrastructure. "Done" means healthy in production, not merged. - Proficient business English. Built on top, AI & agents - 1 to 2+ years shipping LLM applications to production (not just prototypes), with hands-on command of context engineering, RAG, multi-agent orchestration, and evals. - You've personally authored skills, sub-agents, evals, or verification harnesses, and can walk us through something real you built. - You think in measurements: baselines, before/after comparisons, and killing experiments that don't move the needle. Bonus points - Public work on agent harnesses, AI evaluation, or developer experience: open source, talks, blog posts, papers. - Experience building internal tools or developer platforms, where other engineers are your users. - Comfort operating with ambiguity at startup speed: small teams, no playbook, decisions you own. ## Benefits & Perks - Attractive compensation package consisting of base salary and the potential to earn a significant bonus for top performance. - Stock options. - Opportunity to have a real impact in a high-growth global category leader - 40% discount on all Fever events and experiences - Home office friendly - Responsibility from day one and professional and personal growth - Great work environment with a young, international team of talented people to work with! - Health insurance and other benefits such as Flexible remuneration with a 100% tax exemption through Cobee. - English Lessons - We have free food, drink and fruit at the office! - Possibility to receive in advance part of your salary by Payflow. Thank you for considering joining Fever. We cannot wait to learn more about you! If you want to learn more about us: [Fever's Blog](https://newsroom.feverup.com/en-US/) | [Tech.Eu](https://tech.eu/2023/02/02/fever-raises-110-million-in-new-round-at-1-8-billion-valuation) |[TechCrunch](https://techcrunch.com/2019/08/04/data-driven-events-discovery-and-planning-startup-fever-raises-35-million-led-by-rakuten/) Fever is committed to creating an inclusive and diverse workspace where everyone's background and ideas count. Our main goal is to find the best possible talent regardless of place of birth, racial or ethnic origin, gender, gender identity, religion, opinion, sexual orientation, disability, pregnancy, marital status, age or caring responsibilities. We encourage everyone to apply! If you require any kind of accommodation during the selection process please contact our Talent team so we can help you by providing a welcoming and seamless journey. If you want to know more about how Fever processes your personal data, click here [Fever - Candidate Privacy Notice](https://docs.google.com/document/d/1cIzPP7QJGht5LAGKkRGQP8fxh-Z4Mfph2JhGSvhd8zM/edit?tab=t.0#heading=h.y7rpsj7nzave) ## About FeverUp ## Company Overview - **One-liner**: Fever is the leading global live-entertainment discovery tech platform that helps millions of people weekly discover and book local experiences, from immersive exhibitions and festivals to pop-up events, while empowering creators with data and technology. - **Entity Type**: Private (Private Equity-Backed; latest deal type: PE Growth/Buyout-LBO) - **Headquarters**: New York, NY, USA (50 Greene Street, 3rd Floor) - **Founded**: 2014 - **Founders**: Alex Marti (CEO) and Francisco (Paco) Herrero ## Core Business - **Primary industry/industries**: Application Software, Live Entertainment, Event Ticketing, SaaS, Mobile - **Target customers**: B2C (consumers looking for local experiences) and B2B (event organizers, creators, venue owners, brand partners) - **Mission or purpose statement**: To democratize access to culture and entertainment in real life. ## Products & Services - **Fever Platform (App/Web)**: A discovery and ticketing platform offering personalized recommendations for local events, immersive experiences, interactive theaters, festivals, molecular cocktail pop-ups, and more. Users can browse, discover, and book tickets. - **Fever Originals**: Fever’s in-house production arm that creates and produces its own proprietary events and experiences (e.g., immersive exhibitions, pop-ups). - **Fever for Business**: A B2B offering providing tools for event promotion, management, and audience reach, empowering creators with data and technology to scale their experiences. - **Secret Media Network**: An advertising and sponsorship network connecting brands with Fever’s audience through integrated campaigns and event partnerships. - **Onebox**: A product/service line (likely a unified platform or integration tool for partners). ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed (recent PE buyout/LBO deals suggest significant private market valuation). - **Key Metric – Total Funding**: $561M raised across 13 financing rounds. - **Notable Investors/Partners**: Ares Management, Crescenta, Endeavor Catalyst, Everything is Awesome, G Squared (among 31 total investors). - **Growth Signals**: - **Employees**: ~3,000+ (careers page) to 3,954 (PitchBook, as of 2025) — rapid scaling from 2,200+ full-time employees. - **Global Presence**: Headquarters in NYC with local offices in 15+ cities (Madrid, London, Los Angeles, Chicago, Mexico City, Sydney, Singapore) and presence in 150+ cities globally. - **Recent M&A**: Acquired Dice (music ticketing, June 2025) and Atom Tickets (movie ticketing, March 2025) via buyout/LBO, signaling aggressive expansion into new entertainment verticals. - **Team Diversity**: 56+ nationalities represented. ## Competitive Advantages - **Data-Driven Platform**: Fever leverages data to inform intuition, personalize recommendations, and help creators optimize events — a core differentiator over traditional ticketing. - **Proprietary Content (Fever Originals)**: By creating its own events, Fever controls supply and margins, reducing reliance on third-party inventory. - **Global Scale & Network Effects**: A vast, multi-city presence creates a powerful two-sided marketplace: more events attract more users, which in turn attracts more event creators. - **Strong Brand & Talent Magnet**: Known for a high-performance culture (“Get things done,” “Good and fast is 10x better than perfect and slow”), attracting ambitious talent. ## Strategic Focus - **Expansion via M&A**: Recent acquisitions of Dice and Atom Tickets indicate a strategy to consolidate the event ticketing space and enter new verticals (live music, cinema). - **International Growth**: Continuing to expand into new cities and countries across Europe, Americas, Asia, and Oceania. - **Deepening B2B Offerings**: Empowering event creators with more data, technology, and marketing tools through “Fever for Business” and “Secret Media Network.” - **Vertical Integration**: Growing Fever Originals to produce more high-margin, proprietary events. ## Why Work Here - **Culture & Values**: Emphasizes a fast-paced, data-driven, and entrepreneurial environment. Core values include “Get things done,” “Make decisions based on facts and data,” “We are bar-raisers,” and “We are Fast.” The company encourages direct, actionable feedback and a “bias for action” over excessive process. - **Remote/Hybrid/Office Policy**: Not explicitly stated on careers page, but the presence of offices in 15+ cities and roles listed with specific locations suggests a hybrid or office-based model with flexibility depending on role and team. - **Notable Perks & Environment**: - **Diverse & Inclusive**: Equal opportunity employer with 56+ nationalities; average employee age is 31. - **High Talent Bar**: “A few motivated and skilled team members achieve much more than many who are disengaged or ineffective.” - **Hands-On Culture**: All employees, including leadership, are expected to be hands-on and lead by example. - **Growth Opportunities**: With 500+ open roles across 20+ departments (Engineering, Product, Data, Marketing, Sales, Operations, etc.), there is significant room for internal mobility and career growth. - **Impact**: Employees directly shape how millions of people discover culture and entertainment globally. ## Sources 1. [Fever Careers - Overview](https://careers.feverup.com/) 2. [Fever Careers - Life at Fever](https://careers.feverup.com/life-at-fever/) 3. [Fever Careers - Work Areas/Jobs](https://careers.feverup.com/work-areas/) 4. [PitchBook - Fever 2026 Company Profile](https://pitchbook.com/profiles/company/62912-89) 5. 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