Senior Solutions Engineer | API Infrastructure & AI Gateway | €80K - €120K

A technology company specialising in API infrastructure, with an open-source gateway widely used in enterprise environments, is looking for its first Solutions Engineer to build this role from scratch.

📍 100% remote [Spain] · 💶 Fixed salary of €80–90K + variable pay (target total earnings €120–130K)

You’ll be the person clients turn to when the conversation gets serious: how the product fits into their architecture, whether it can replace their current gateway, how to manage AI and bot traffic, and what the migration process involves. This isn’t a support or demo role. You’ll initiate and lead discussions with engineering and architecture teams, almost always without an Account Executive by your side, and your judgement will determine whether the deal goes ahead.

What will you do?

• Initiate and manage conversations with enterprise clients from the very first point of contact, independently
• Carry out technical discovery: understand the client’s tech stack, pain points and constraints before making any proposals
• Design and present demos and proofs of concept tailored to each environment
• Run AI Gateway assessments: routing and failover between LLM providers, token quotas, prompt protection and API exposure as MCP tools for agents
• Answer evaluation questions, ranging from configuration to benchmarks and plugin architecture, with engineering support
• Support partners and integrators with technical enablement, demos and joint PoCs
• Creating demos, technical documentation and reusable resources
• Apply what you learn in the field to product and marketing
• To be responsible for the technical success of each deal

What we’re looking for

• Actual pre-sales work with clients: you have personally led discovery sessions, demos and proof-of-concepts with engineering and architecture teams
• Commercial autonomy: you’ve initiated and led discussions on your own, almost always without an account executive by your side, and you can show us specific deals in which you’ve been involved
• You communicate clearly and concisely, with fluent spoken and written English (which is the main working language)
• You know how to discuss trade-offs with an engineering director or a CTO, and you write proposals, technical briefs and progress reports that make sense even without you there
• Solid technical foundation: APIs, gateways, reverse proxies or middleware (KrakenD, Kong, Nginx, Envoy, AWS API Gateway or similar), Docker and Kubernetes, OAuth2/JWT/OpenID Connect, and LLM APIs with knowledge of MCP
• Ability to write configuration files, scripts or lightweight code (Go, JavaScript, Lua or similar) for demos and testing
• Autonomy, little due process and independent judgement
• Fluency in English is ESSENTIAL (working language)

This will be taken into account

• Experience of working at a company specialising in API management, developer tools or infrastructure
• Working with system integrators or through the sales channel
• Something you’ve built using agents or MCPs that you can demonstrate
• Knowledge of protocols such as A2A and other AI gateways

What they offer

• 100% remote, asynchronous work with no micromanagement
• Direct access to senior management and real influence over the product
• The opportunity to build this feature from scratch and define how it should be done properly
• Unlimited holiday and flexible working hours
• Fixed salary of €80–90K gross per annum plus a performance-related bonus linked to the company’s results (target total remuneration of €120–130K)