cover image
lemlist

lemlist

www.lemlist.com

3 Jobs

114 Employees

About the Company

lemlist is your go-to tool for business growth, trusted by over 37,000 businesses in more than 100 countries. The multi-channel prospecting platform allows you to discover your next buyers from a B2B database of 450M+ contacts, obtain their verified emails, and create effective campaigns with AI.

All-in-one solution, no need for 3rd party tools, technical skills or extensive outreach experience.

Listed Jobs

Company background Company brand
Company Name
lemlist
Job Title
Experienced Fullstack JS Developer (backend-oriented)
Job Description
Job Title: Experienced Fullstack JS Developer (backend‑oriented) Role Summary: Senior full‑stack JavaScript developer focused on Node.js backend and web application delivery for a B2B SaaS platform. Responsibilities include designing new features, refactoring existing code, optimizing performance, and providing hands‑on support for customer‑facing issues while sharing knowledge across the engineering team. Expectations: * 0‑3 months: complete onboarding, acquire deep understanding of product architecture, and contribute to new feature development. * 3‑12 months: lead delivery of multiple projects, significantly improve code quality and scalability, and expand mentorship activities within the team. Key Responsibilities: * Design and implement end‑to‑end features on both frontend and backend, ensuring high quality and maintainability. * Refactor existing code, fix bugs, and perform performance and scalability optimizations. * Manage multiple concurrent projects, prioritise tasks, and maintain clear documentation. * Respond to technical support inquiries, delivering quick and effective solutions. * Mentor junior developers, conduct knowledge‑sharing sessions, and build team competency. * Actively participate in agile ceremonies (sprints, stand‑ups, retrospectives). * Collaborate with product and design teams to translate requirements into technical solutions. Required Skills: * 5+ years of professional experience in JavaScript/TypeScript development. * Expertise in Node.js, MongoDB, and RESTful API design. * Proficiency with modern front‑end frameworks (React, Vue, or equivalent). * Strong knowledge of database modeling, query optimisation, and indexing strategies. * Experience with unit/integration testing, CI/CD pipelines, and version control (Git). * Demonstrated ability to work independently, own complex projects, and iterate rapidly. * Familiarity with agile development practices and remote collaboration tools (Slack, Notion, Gather). * Excellent written and verbal communication in English; proficiency in French preferred. * Comfortable with working within a 3‑hour time‑zone offset from France. Required Education & Certifications: * Bachelor’s degree (or equivalent) in Computer Science, Software Engineering, or a related technical field. * No specific certifications required; mastery of relevant technologies and proven delivery experience are mandatory.
Bordeaux, France
Remote
11-11-2025
Company background Company brand
Company Name
lemlist
Job Title
AI Productivity Engineer (95% Dev/ 5% DevOps)
Job Description
**Job Title:** AI Productivity Engineer (95% Development / 5% DevOps) **Role Summary:** Lead the discovery, experimentation, and integration of AI‑powered code generation and automation tools within a large engineering organization. Drive the adoption of these tools to increase developer productivity while maintaining code quality, maintainability, and operational stability. Act as a change agent, educator, and product owner for AI‑enhanced workflows. **Expectations:** * Deliver measurable improvements in delivery speed, deployment frequency, and code quality. * Complete a full CI/CD & monorepo audit within 3 months; publish guidelines and conduct 30 %+ adoption of new workflows. * Build and operationalize at least two AI POCs (e.g., KiloCode + review assistance) that demonstrate speed/quality gains. * Fully industrialize AI tooling across the monorepo, achieve 100 % developer adoption, and reduce code‑to‑prod lead time and rollback rates by 12 months. * Optimize AI usage budgets through token cost tracking, quota policies, and quarterly audits. **Key Responsibilities:** 1. Evaluate and benchmark AI code‑generation platforms (Claude, Gemini, Cursor, KiloCode, etc.). 2. Design, develop, and automate POCs, scripts, and integrations to test and industrialize AI practices in the existing stack (MeteorJS, monorepo, CI/CD). 3. Create training materials, run workshops, and document best‑practice playbooks for internal developers. 4. Measure and report on AI impact using delivery metrics (lead time, deployment frequency, defect density). 5. Collaborate with product managers to align AI‑driven features with roadmap priorities. 6. Identify and implement additional AI‑based process enhancements (test generation, refactor assistance, technical debt detection). 7. Maintain ongoing monitoring, security checks, and compliance documentation for AI integrations. **Required Skills:** * 5+ years web development experience (JavaScript/TypeScript, Node.js, React). * Proven experience deploying AI tooling in a team of >5 developers, with documented impact. * Strong DevOps mindset: CI/CD pipelines, monorepo management, automated testing. * Hands‑on with LLM APIs (OpenAI, Claude, Gemini, etc.) and prompt engineering. * Excellent documentation, communication, and evangelism abilities. * Self‑directed, structured, and comfortable driving change/education initiatives. * Deep technical curiosity and problem‑solving aptitude. **Required Education & Certifications:** * Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience). * Certifications in cloud DevOps, CI/CD, or AI/ML fundamentals are advantageous but not mandatory.
France
Remote
Mid level
11-11-2025
Company background Company brand
Company Name
lemlist
Job Title
Senior AI Engineer
Job Description
**Job Title:** Senior AI Engineer (Hands‑On) **Role Summary:** Design, build, and scale lemlist's AI architecture to transition from basic prompt calls to autonomous, multi‑step agentic systems. Own end‑to‑end AI engineering, from agent design to monitoring, and deliver product‑increasing AI features such as the Copilot v1. **Expactations:** - Deliver a production‑ready agentic architecture within 6 months. - Build autonomous workflow loops that process leads, enrich data, and trigger actions. - Deploy the first version of the Copilot feature with measurable business value. - Establish global AI monitoring, evaluation, and bias mitigation practices. - Foster an AI engineering culture through mentorship and documentation. **Key Responsibilities:** 1. **AI Architecture** – Design and implement agentic frameworks (LangGraph, Mastra, custom JS). 2. **Context & Memory Management** – Define data flow, state machines, and action orchestration. 3. **Build Autonomous Agent Loops** – Enable AI variables that iterate over lists (e.g., for each lead). 4. **Copilot Development** – Create Semi‑Agentic Copilot v1; plan future autonomous extensions. 5. **Evaluation & Monitoring** – Build LLM evaluation pipelines, regression tests, drift detection, and 360‑degree monitoring (latency, cost, quality, hallucinations). 6. **Bias & Explainability** – Perform error analysis, improve models for fairness and transparency. 7. **Performance & Cost Optimization** – Continuously refine model efficiency. 8. **Documentation & Knowledge Sharing** – Record processes, results, and best practices. 9. **Collaboration & Enablement** – Work with Data Scientists, developers, PMs, and CPO; mentor peers; own AI technical direction. **Required Skills:** - Proficient in Node.js, TypeScript, and Python. - Proven experience building production AI features at scale. - Deep understanding of agentic systems, context/state‑machine logic, and Retrieval‑Augmented Generation. - Skills in LLM evaluation frameworks and monitoring. - Ability to own technical vision from conception to deployment. - Strong leadership, communication, and critical‑thinking abilities. - Passion for deploying real AI solutions and continuous learning. **Nice to Have:** - LangChain / LangGraph experience. - LLM evaluation tools (Trulens, DeepEval, Opik, etc.). - SaaS background, mentoring experience, open‑source contributions. - Ability to translate complex AI concepts for non‑technical stakeholders. **Required Education & Certifications:** - Bachelor’s or Master’s degree in Computer Science, Engineering, or related field. - No mandatory certifications required.
France
Remote
Senior
12-12-2025