Senior Software Engineer
We’re looking for a Senior Software Engineer to join our tech team and help build the future of neuro-contextual advertising at global scale.
We’re looking for a Senior Software Engineer to join our tech team and help build the future of neuro-contextual advertising at global scale.
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Du machst Machine Learning produktionsreif: Du entwickelst skalierbare Daten- und Modell-Pipelines auf AWS und bringst Machine-Learning-Mode
Implement agent features and integrations in production codebases – APIs, websockets, tool-calling workflows – following established architecture patterns.
Was du bei uns machst Technische Umsetzung beim Kunden: Architektur, Integration und Inbetriebnahme von KI-Lösungen (LLMs, RAG, Agentic AI,
Wir schreiben dir, sobald eine neue geprüfte Stelle zu Remote dazukommt. Höchstens eine Nachricht am Tag, und nur, wenn es tatsächlich etwas Neues gibt.
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Worum es bei uns wirklich geht Du identifizierst KI-Anwendungsfälle in Bankprozessen, bewertest Machbarkeit und Nutzen und überführst sie in
Umsetzung von individuellen Applikationen in interessanten und herausfordernden Kundenprojekten auf Basis von ASP.NET Code (Razor/Blazor) un
Als AI Engineer (w/d/m) schreibst du nicht nur Notebooks und Prompts, du baust produktive GenAI-Systeme: Agenten, RAG-Pipelines, LLM-getrieb
Warum dieser Job gelistet ist
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We’re looking for a Senior Software Engineer to join our tech team and help build the future of neuro-contextual advertising at global scale. Who We Are At Seedtag, our mission is to transform advertising by proving that effectiveness and user privacy can truly coexist. As the leading Neuro-Contextual Advertising Company, we combine Artificial Intelligence, Natural Language Processing, Computer Vision, and neuroscience to understand not only what content is about, but how it makes people feel and what they intend to do next.
Our proprietary AI, Liz, enables brands to connect with audiences across the open web and Connected TV without cookies or user tracking. Founded in 2014 by two ex-Googlers, Seedtag has grown to 500+ Seedtaggers in 17 countries, backed by €250M in funding, and operates today as a global ad-tech leader. If you enjoy solving complex engineering challenges and building AI-driven systems at scale, you’ll feel right at home here.
Your Challenge As our Senior Software Engineer, you will join our five-person Contextualization Platform team, building the technology that understands content across the open web, Connected TV (CTV), and in-app environments. You ll develop high-performance backend systems and turn AI innovations into production solutions that power contextual advertising at scale. - Backend Development: Design, build, and maintain high-throughput, low-latency services using Golang, supporting an RTB ecosystem handling over 500K queries per second. - AI & ML Integration: Transform Data Science experiments, LLM capabilities, and AI-driven ideas into reliable production systems. - Scalable Architecture: Develop APIs, services, and data pipelines that process large volumes of contextual data efficiently. - Innovation & Experimentation: Prototype, test, and iterate on new approaches to contextual understanding across OpenWeb, CTV, and in-app environments. - Platform Evolution: Contribute to architectural decisions and continuously improve system performance, reliability, and scalability. - Cross-Functional Collaboration: Work closely with Data Scientists, AI teams, and Product Managers to deliver solutions with measurable business impact. - Engineering Excellence: Write clean, maintainable code while balancing quality, speed, and evolving business priorities. Our Core Values Outcome over Output We measure success by impact and value, not by volume of features or lines of code.
Failure Is Allowed, Learning Is a Must Experimentation is key to innovation. We test early, iterate often, and learn fast. We Are All Scouts We take ownership and leave things better than we found them.
We Are Data-Driven Data informs our decisions and helps us continuously improve our systems and results. Tech Stack You ll work with technologies supporting Seedtag s scalable backend systems and AI-powered capabilities. Our stack includes: - Core Language: Go / Golang. - Additional Languages: Python, Node.js, TypeScript. - Architecture: Distributed systems, microservices, high-throughput and low-latency services, APIs. - AI & Machine Learning: LLM APIs, embeddings, RAG, ML model integration. - Infrastructure & Observability: Cloud infrastructure, monitoring, Infrastructure as Code (e.g.
Terraform). - Domain: OpenWeb, CTV, in-app contextualisation, RTB. What You’ll Need to Succeed - Strong hands-on Golang experience, building and maintaining backend services in production. - Solid understanding of distributed systems, particularly high-throughput or low-latency architectures. - Hands-on experience with LLM APIs, embeddings, or RAG, alongside a strong interest in AI technologies. - Experience with cloud infrastructure, observability, and production system monitoring. - Familiarity with Infrastructure as Code principles and tools. - Strong problem-solving skills and a pragmatic approach to delivering reliable, maintainable software. - Ability to work autonomously, adapt to changing priorities, and collaborate effectively with technical and non-technical stakeholders. It Would Be a Plus If You - Have experience with Python, Node.js, or TypeScript. - Have worked in AdTech, particularly with RTB, OpenRTB, or CTV. - Have experience processing large-scale data or building real-time advertising systems.
Why Join Seedtag? - A key moment of growth with real ownership and global impact. - Flexible work model with 100% remote or hybrid options. (Remote contracts available in Spain, Italy, UK, Belgium, Netherlands, France, and Germany.) - Continuous learning through a learning platform and optional language classes. - A supportive, trust-based culture that values well-being. - Team activities and opportunities to connect beyond work. Additional Perks - Home office setup budget up to €1,000 - Paid trips to our HQ in Madrid - MacBook Pro M3 Ready to Join the Seedtag Adventure?
At Seedtag, we create an environment where everyone can thrive. If you need accommodations during the hiring process, let us know and we’ll ensure a positive experience. Send us your CV and let’s build the future of neuro-contextual advertising together.
Interesse an dieser Position?
Die vollständige Anzeige und das Bewerbungsformular liegen beim Arbeitgeber.
Zur OriginalanzeigeHier stehen ausschließlich Stellen, die ortsunabhängig ausgeschrieben sind. Anzeigen, die Homeoffice an einzelnen Tagen erlauben, laufen unter Hybrid und nicht hier, denn wer ortsunabhängig sucht, will nicht pendeln. Diese Unterscheidung trifft kijobs selbst: Die Quellen weisen sie nicht aus, erkannt wird sie aus Titel, Ortsangabe und Anzeigentext, und im Zweifel ordnen wir vorsichtig ein, lieber hybrid als remote. Beachte dabei, dass remote selten weltweit heißt. Viele Arbeitgeber verlangen einen Wohnsitz im selben Land oder zumindest innerhalb der EU, und das steht meist erst im Anzeigentext.