Solutions Engineer
- Role
- Sales
- Experience
- Senior
- Employment
- Full-time
- Company size
- Startup
Open to Anywhere in Europe. Set where you work from to check your eligibility.
No BS summary
Solutions Engineer in Europe with 5+ years in solutions/sales engineering or technical pre-sales. Must be strong with REST APIs, JSON, SQL, integrations, enterprise/mid-market POCs, and fluent English. Billing, API-first, developer tools, infrastructure SaaS, or fintech/revenue infrastructure background is the target.
Core skills
Required skills
Optional skills
Required languages
Optional languages
Do it all with Mistral.
AI agent for long-horizon tasks, fluent in your knowledge and tools.
Enterprise knowledge search
Structured data analysis
Document and report synthesis
Multi-step task scheduling
Persistent memory and reusable skills
Ship faster with a stack that meets devs where they work.
Async code generation
Architecture-aware reasoning
Legacy code translation
Automated CI/CD and code reviews
Test and documentation authoring
Build and deploy AI apps with complete control: build custom agents, and run production AI anywhere—from edge to cloud—with enterprise-grade tooling.
Agent orchestration
End-to-end observability
Unified AI registry
Evals, judges, and guardrails
Full deployment portability
Turn proprietary knowledge into model intelligence by training and aligning your own models.
Enterprise domain adaptation
End-to-end model training
Reinforcement learning and distillation
Synthetic data generation
Evaluation and lifecycle management
The frontier-grade infrastructure and orchestration platform behind Mistral's own models is now yours to build on.
Dedicated GPU clusters
Tailored, domain-specialized AI: from custom pre-training with your data to scaled deployment—with expert guidance throughout.
Model customization
Value realization
Deployment services
Use case acceleration
Enterprise activation
Supported by expert partnership.
Work with world-class AI scientists to enable transformation that drives impact.
Our services
AI deployments designed for privacy.
Deploy frontier AI in your environment, or consume as a service or from one of our cloud partners.
Self-hosted.
Deploy Studio on virtual cloud, edge, or on-premises. Self-hosted deployments offer more advanced levels of customization and control. Your data stays within your walls.
Mistral cloud.
Get started with Studio hosted on Mistral’s infrastructure and build your own applications and services with our APIs. Our servers are hosted in the EU.
Cloud providers.
Access the power of Studio via your preferred cloud provider (Google Cloud, AWS, Azure, SAP, IBM, Snowflake, NVIDIA, Outscale) using your cloud credits.
Own your own AI future.
Build, customize, and deploy tailored AI solutions with complete control.
What you'll do
- Run technical discovery calls to understand prospects' pricing models, billing infrastructure, and integration requirements
- Lead and own product demos — building bespoke demo environments tailored to each prospect's use cases, not off-the-shelf scripts
- Manage technical evaluations and cloud trials end-to-end: configure demo data, set up trial environments, run technical workshops, and stay close to the prospect throughout
- Write clear, honest deal debriefs that capture what landed, what's at risk, and what actions are needed — shared with the AE and founder team
- Surface and work through product gaps creatively: propose API-level workarounds, validate feasibility with engineering, and frame limitations transparently without losing deals
- Produce competitive technical analysis and maintain battle cards as Lago's market position evolves
- Partner with AEs on commercial strategy: know when to push for a close, when to escalate to a founder, and how to sequence the conversation
- Lead onboarding for new customers — both their engineering teams (API integration, event schema, webhooks) and their finance and ops teams (plan configuration, invoice flows, reporting)
- Serve as the primary technical point of contact through the implementation phase, owning the customer relationship until they go live
- Conduct proactive check-ins and syncs throughout implementation to unblock customers and prevent issues before they escalate
- Identify expansion and optimisation opportunities within existing accounts as usage matures
- Partner with Customer Success and Support to ensure a clean handoff after go-live
- Feed recurring implementation pain points back to Product and Engineering to inform roadmap prioritisation
What they require
- A strong technical generalist who can read API documentation, write a curl command, debug a webhook, and explain the result to a VP of Finance in the same afternoon
- A natural deal-shaper — you understand commercial dynamics and help AEs close by removing technical blockers, not by just answering questions
- Someone who writes thorough, clear post-call debriefs without being asked: every prospect interaction generates signal for the team
- Comfortable with ambiguity: you don't have a perfect answer for every gap, but you're good at finding one that keeps the deal alive and serves the customer well
- Genuinely curious about how billing and pricing systems work — the nuances of metering, aggregation, invoice generation, and revenue recognition interest you
- Proactive about internal tooling and process: if you can script or automate something that saves the team time, you do it
- You're not someone who reads from a slide deck and escalates anything technical to engineering
- You're not indifferent to whether a deal closes or a customer goes live — you feel ownership over both outcomes
- You're not a siloed individual contributor — you share context freely, write things down, and loop in the right people early
- You're not passive in post-sales: a customer who's stuck is a customer who churns, and you move quickly to prevent that
- 5+ years in a Solutions Engineering, Sales Engineering, or technical pre-sales role — ideally in a developer tools, API-first, or infrastructure SaaS company
- Strong technical foundation: comfortable with REST APIs, JSON, SQL, and working through integration architectures
- Demonstrated experience running complex evaluations and POCs with enterprise or mid-market prospects
- Excellent written and verbal communication skills; fluent in English (French is a significant plus for European accounts)
- Track record of collaborating closely with AEs and founders in a fast-moving sales environment
- Ability to manage multiple active deals and customer implementations simultaneously without dropping the ball
- Preferred: Experience with billing, usage-based pricing, fintech, or revenue infrastructure
- Preferred: Background in post-sales implementation or customer success engineering
- Preferred: Exposure to open-source products or developer communities
- Preferred: Experience presenting to both engineering and finance/executive audiences
- Applicants must be based in Europe. Applications from other locations will not be considered.
Benefits
- Written, async-friendly culture
- Direct access to Product and Engineering teams
- Transparent, user-driven roadmap
- Autonomy and ownership from Day 1
- Work with top-tier international talent: Join a team that values excellence, slope over intercept, and accountability. We have convinced top-tier investors and companies to trust us with mission-critical systems like billing. We have 12+ nationalities on the team and are building a global company with a global culture.
- Shape the future of monetization and fintech: The world is changing. Monetization systems are shifting with AI, and you will be at the forefront of this revolution.
- Fully remote: Work from anywhere in Europe
- Competitive package: Competitive salary and stock options
- Make an impact: Your work will directly shape how customers like Mistral, Groq, Synthesia, and established enterprises monetize and grow.
Lago is a fast-moving digital marketing agency helping service businesses grow through high-quality websites, SEO, advertising, and automation.
What people say about this company
3.2/ 5