Prelude
Engineering
SoftwareEngineer-InternalTools
Neural analysis suggests this role is
optimal for Mid candidates.
“Software Engineer - Internal Tools at Prelude. Skills: Internal tools development, AI-powered automation, Backend development (Go/TypeScript), Full-stack development, Stakeholder collaboration. Owning the design, development, and maintenance of internal tools. Building agentic AI workflows that automate repetitive internal processes”
What You'll Achieve.
Make every team at Prelude move faster, ship with confidence, and spend their time on the work that actually matters; Unlock new capabilities for our teams (fraud review, customer support triage, GTM workflows, ops dashboards, and more); Give every team visibility into what they need to act on
Industry & Context.
Finding friction and turning it into functional, reliable software; Preference for simplicity vs complexity, with intuition for what will scale effectively
Participating in on-call rotations for the internal platform you build, 3 days in-office in central Paris, with 2 days and 4 weeks of remote work per year, 100% travel to the office subsidised
What They're Looking For.
Must Have
Software engineer with experience shipping in high-paced environments and a track record of finishing what you start, Shipped automated workflows and AI-powered tools in production (n8n, Dust, custom LLM pipelines, or equivalent), not just prototyped with them, Built for internal users before and understand that reliability matters more than polish — but that good UX still earns you adoption, Solid backend skills in Go or TypeScript, with the ability to design and build reliable APIs and services, Comfortable working across the stack — React on the frontend when the tool needs a UI, plus the data layer (DynamoDB, SQS, Lambdas) underneath, A preference for simplicity vs complexity, with intuition for what will scale effectively as the company grows, A product-led mindset — you code for outcomes and impact, and you can talk to a non-engineer stakeholder without translating from engineer-speak, Fluent/professional English given our international team
Nice to Have
Experience with developer experience or platform engineering, Familiarity with fintech, identity, fraud, or another regulated/high-stakes domain, Experience integrating with common SaaS APIs (CRM, billing, support, data warehouse), Any experience with Rust, gRPC, or AWS serverless (Lambda, DynamoDB, SQS) is a plus
What You'll Do.
and maintenance of internal tools
Building agentic AI workflows that automate repetitive internal processes
Working directly with stakeholders across all teams to identify friction and turn it into functional solutions
Evaluating and integrating the latest AI engineering tools
Contributing to our polyglot codebase
Collaborating with the broader engineering team on shared infrastructure
Designing and building internal dashboards on top of our data layer
Participating in on-call rotations for the internal platform
How You'll Work.
Team & Collaboration
Working directly with internal stakeholders; Collaborating with the broader engineering team on shared infrastructure, schemas, and APIs; Working directly with stakeholders across all teams to identify friction and turn it into functional solutions
Communication Scope
Fluent/professional English
Full Job Description
About Prelude Prelude is redefining how companies authenticate and onboard users - turning what's traditionally a cost center into a growth lever. Our flagship product lets businesses send OTP codes with the best price-to-conversion ratio on the market, dynamically selecting the most effective channel in real time (optimized SMS, WhatsApp, and more) while actively blocking spam and fraud that legacy providers miss. Founded in 2022 by former Zenly team members who lived the pain of broken SMS authentication firsthand, we're already serving fast-growing companies across Europe and are expanding into the US. But authentication is only the starting point - we're building the platform for trust at scale, with an ambitious roadmap of market-defining products ahead. Why join us Today, we're a team of 60 and growing, based in Paris, building products that power secure and high-performance user onboarding for companies across the world. We believe small, highly skilled teams outperform large, fragmented organizations, and we are intentional about staying focused on impact, quality, and speed. We operate with a flat org structure and value in-person collaboration, which helps ideas move faster, decisions stay grounded, and teams take full ownership of what they build. Our values - Care We care deeply about our customers, our teammates, and the quality and reliability of what we ship. - Bias for Action We move fast, test in the real world, and iterate quickly rather than over-optimizing in theory. - Ownership We take responsibility end to end, from identifying problems to delivering outcomes and learning from results. About the role Internal tooling is not a backlog item at Prelude — it's a strategic lever. As we scale from 50 to a much larger team, the speed at which engineering, ops, sales, support, and finance can operate depends on the tools we put in their hands. You'll own that surface. You'll build the internal tools and AI-powered automation that make every team at Pre
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