Product Engineer

Product Engineer We’re reimagining how B2B companies grow. Our AI-driven platform helps marketing teams unlock smarter, faster lead generation across major ad platforms,  transforming how businesses discover and engage their ideal customers.Interested in advanced AI optimisation with dynamic audience data, turning every ad interaction into strategic intelligence that fuels both campaign performance and business growth? This could be your next move!We’ve recently raised our seed round and are now expanding rapidly across the US and Europe. This is a rare opportunity to join an early-stage, venture-funded company that’s building the next generation of marketing intelligence,  where product, AI, and customer experience converge. If you’re excited by the challenge of building from first principles, shaping core product direction, and having a tangible impact on how companies grow, you’ll feel right at home.The OpportunityAs a Product Engineer, you’ll be at the intersection of AI, engineering, and product,  extending and enhancing our platform while shaping the technical foundation of our Ads platform.You’ll design and build integrations, develop APIs, and create AI-powered features that help marketers achieve unprecedented results through automation and intelligence. Working directly with the founding team, you’ll have ownership across the stack and a voice in how we scale the platform from early customers to a global user base.Over the next 12 months, you’ll focus on:Building scalable APIs and integrations with advertising, CRM, and analytics platforms.Designing and deploying AI-powered features for campaign automation and optimisation.Architecting core systems for handling large-scale ad performance data.Establishing technical standards for reliability, monitoring, and scalability.Areas of ResponsibilityPlatform & API DevelopmentDesign and implement robust API integrations and MCP servers.Build and maintain integrations with ad platforms, CRMs, and analytics tools.Develop AI-powered features for keyword generation, campaign optimisation, and analytics.Architect scalable, distributed systems capable of processing high data volumes.Backend & Frontend EngineeringContribute to our async Python backend (FastAPI) and TypeScript/React frontend.Implement comprehensive monitoring and analytics for campaign and platform performance.Collaborate with product and design to translate customer feedback into technical solutions.Reliability & PerformanceEnsure integrations and APIs are secure, efficient, and scalable.Manage rate-limited APIs gracefully and design resilient retry/queue systems.Champion best practices in testing, error handling, and observability.Key OutcomesDeliver stable and scalable integrations with multiple advertising platforms.Launch AI-driven product features that improve campaign performance and automation.Establish engineering practices that accelerate development and maintain reliability.Create systems that can handle millions of API calls with high uptime and efficiency.Experience & Skills3+ years of experience in backend or full-stack software development.Strong proficiency in Python (FastAPI preferred) and TypeScript.Deep understanding of RESTful API design, async programming, and distributed systems.Experience deploying and maintaining AI/ML tools in production environments.Solid database skills (PostgreSQL, Redis) and message queuing (Celery, RabbitMQ).Excellent problem-solving, debugging, and system design skills.Highly Valued ExperienceGoogle Ads API experience (campaigns, keywords, bidding strategies).LinkedIn API or other social advertising platform integrations.CRM integrations (Salesforce, HubSpot, etc.).Experience with AdTech systems (RTB, DSPs, SSPs).Familiarity with analytics tools like GA4, Segment, Mixpanel.Expertise in managing rate-limited APIs and scaling high-throughput systems.Understanding of ad metrics, CPC, CTR, ROAS, conversion tracking.What Makes You Stand OutYou’re AI-native, comfortable using LLMs as development partners and building AI-powered tools.You’ve built production-grade integrations handling millions of API calls.You understand the intricacies of advertising APIs and campaign data pipelines.You design for reliability,  handling API limits, retries, and failures gracefully.You believe in automation, speed, and clarity, eliminating manual processes wherever possible.You write clean, typed, and maintainable code, with a “fail fast, fail loud” mindset.Our Tech StackBackend: Python (FastAPI), Pydantic, SQLAlchemy, AlembicFrontend: TypeScript, React, Vite, TanStack QueryInfrastructure: PostgreSQL, Redis, Celery, DockerAPIs: Google Ads API, OpenAI, Custom IntegrationsMonitoring: Comprehensive logging and metrics collectionWhat We OfferThe opportunity to shape the technical direction of an emerging AI company.Direct collaboration with the founding team on product and strategy.Competitive compensation with meaningful equity.Flexible working environment with global exposure (US & EU).A culture built on trust, ownership, and creative problem-solving.And More as We GrowWe’re still early, which means there’s a broad range of problems to solve and systems to build. If you love crafting elegant technical solutions, automating complexity, and building at startup speed, we’d love to meet you.We're working on multiple additional roles in the AI space so if this role isn't a fit, consider checking out our platform at onmerit.aiThanks for reading,Noel