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30 days ago
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Requirements and responsibilities
At Lago, we're on a mission to make billing simpler, more transparent, and more adaptable for SaaS companies.As the leading open-source billing platform, we empower businesses to build flexible pricing models and scale with confidence. We've raised over $22 million in funding from top-tier investors including Y Combinator and FirstMark, reflecting strong confidence in our vision and growth.Our platform has garnered over 9,000 stars on GitHub, a testament to our active and growing developer community. Companies such as PayPal, CoreWeave, Synthesia and Mistral.ai choose Lago for their billing.We're a team of ambitious, focused individuals who work together to solve hard problems with excellence and accountability. At Lago, we value reliability and proactivity—we trust each other to own tasks, drive them to completion, and adapt quickly. While we encourage you to try fast and "fail fast", we also expect you to learn fast: make mistakes, but don't make the same one twice.If you're excited by challenges and want to grow alongside a high-performing, supportive team, this is the place for you.OverviewWe're hiring a Solutions Engineer in Europe to be the technical backbone of our GTM motion — from first demo to successful go-live and beyond.This is a dual-focus role: pre-sales first, where you help prospects evaluate and understand Lago deeply, and post-sales second, where you ensure the customers who sign with us get to production and see value. You will work directly with our AE team, co-founders, and product to shape deals and guide implementations.This isn't a classic SE role where you polish the same demo script for every prospect. Every billing architecture is different, every contract is custom, and every customer has gaps you'll need to bridge creatively. You'll need to go deep — technically and commercially — to help prospects understand what's possible in Lago and translate that into real, working configurations.You'll be joining a small, high-ownership team and working alongside people who already set the standard for what great looks like in this function at Lago.What you'll be doingPre-sales (primary focus)Run technical discovery calls to understand prospects' pricing models, billing infrastructure, and integration requirementsLead and own product demos — building bespoke demo environments tailored to each prospect's use cases, not off-the-shelf scriptsManage technical evaluations and cloud trials end-to-end: configure demo data, set up trial environments, run technical workshops, and stay close to the prospect throughoutWrite clear, honest deal debriefs that capture what landed, what's at risk, and what actions are needed — shared with the AE and founder teamSurface and work through product gaps creatively: propose API-level workarounds, validate feasibility with engineering, and frame limitations transparently without losing dealsProduce competitive technical analysis and maintain battle cards as Lago's market position evolvesPartner with AEs on commercial strategy: know when to push for a close, when to escalate to a founder, and how to sequence the conversationPost-sales (secondary focus)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 liveConduct proactive check-ins and syncs throughout implementation to unblock customers and prevent issues before they escalateIdentify expansion and optimisation opportunities within existing accounts as usage maturesPartner with Customer Success and Support to ensure a clean handoff after go-liveFeed recurring implementation pain points back to Product and Engineering to inform roadmap prioritisationWho you areA 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 afternoonA natural deal-shaper — you understand commercial dynamics and help AEs close by removing technical blockers, not by just answering questionsSomeone who writes thorough, clear post-call debriefs without being asked: every prospect interaction generates signal for the teamComfortable 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 wellGenuinely curious about how billing and pricing systems work — the nuances of metering, aggregation, invoice generation, and revenue recognition interest youProactive about internal tooling and process: if you can script or automate something that saves the team time, you do itWho you're notYou're not someone who reads from a slide deck and escalates anything technical to engineeringYou're not indifferent to whether a deal closes or a customer goes live — you feel ownership over both outcomesYou're not a siloed individual contributor — you share context freely, write things down, and loop in the right people earlyYou're not passive in post-sales: a customer who's stuck is a customer who churns, and you move quickly to prevent thatRequirements5+ years in a Solutions Engineering, Sales Engineering, or technical pre-sales role — ideally in a developer tools, API-first, or infrastructure SaaS companyStrong technical foundation: comfortable with REST APIs, JSON, SQL, and working through integration architecturesDemonstrated experience running complex evaluations and POCs with enterprise or mid-market prospectsExcellent 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 environmentAbility to manage multiple active deals and customer implementations simultaneously without dropping the ballNice to haveExperience with billing, usage-based pricing, fintech, or revenue infrastructureFamiliarity with scripting (Python, bash, JS) for demo environment setup or automationBackground in post-sales implementation or customer success engineeringExposure to open-source products or developer communitiesExperience presenting to both engineering and finance/executive audiencesHow we workWritten, async-friendly cultureDirect access to Product and Engineering teamsTransparent, user-driven roadmapAutonomy and ownership from Day 1Why Join Lago?Work with top-tier talent: Join a team that values excellence, ambition, and accountabilityShape the future of fintech: Be part of a fast-growing company building the best open-source billing platformRemote-first in Europe: Work from anywhere in EuropeCompetitive package: Competitive salary and stock optionsMake an impact: Your work will directly influence deals and customers at companies like PayPal, CoreWeave, Synthesia, and Mistral.aiReady to Build with Us?If you're excited about joining a high-talent team to solve meaningful problems and help businesses thrive, we'd love to hear from you. Apply today and let's build something remarkable—together.Location type: RemotePrimary Location: Remote EuropeTeam: GTMWork Type: Full Time/Permanent ContractSalary: 60,000–90,000 EUR per year(Applicants must be based in Europe. Applications from other locations will not be considered.)
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