Full-Stack Developer - SMPT/Web Scraper Product (Nigeria)

Job Summary: We’re looking for a Full-Stack Developer to build and scale a custom cold email campaign platform with advanced features like scheduling, A/B testing, reply detection, and SMTP integration. The role involves developing scraping systems, managing data enrichment APIs, setting up secure infrastructure, and creating a lightweight admin dashboard. You’ll work with technologies like React/Next.js, Python/Flask, PostgreSQL, Docker, and GitHub. Ideal candidates have strong experience in full-cycle product development, email marketing systems, and working in fast-paced, collaborative environments. Core Task: Design and build a custom cold email campaign engine with features like scheduling, email rotation, A/B testing, and reply detection Implement and manage integrations with SMTP providers (e.g., Mailgun, SendGrid) or configure custom SMTP relays Develop logic for email warm-up, bounce handling, inbox health tracking, and anti-spam safeguards Build a scalable web scraping system to extract contact names, emails, and metadata from company websites and social media platforms Integrate 3rd-party data enrichment APIs to augment scraped and uploaded contact data Create a lightweight admin dashboard to manage campaigns, monitor metrics, and oversee lead data Implement database architecture to support campaign logic, lead data storage, and email performance tracking Set up job queues and background tasks for campaign sending and scraping operations Maintain system reliability and security, including IP rotation, proxy management, and CAPTCHA avoidance Collaborate with the founder or product lead to define and prioritize new features, improvements, and integrations Must-Have: 5+ years of experience as a full-stack dev (preferably with SMPT/web scraping projects) Front end: intermediate - advanced skills with React.js or Next.js Back-end: intermediate - advanced skills with Python/Flask, PostgreSQL, and SMPT platforms like Mailgun or SendGrid Hands on experience with infrastructure / dev ops platforms like Docker and GitHub Experience as a founding engineer building new products from ideation to launch Knowledge of version control systems (e.g., Git or similar tool) Strong written and verbal English communication skills Ability to work EST Nice to Have: Hands on experience with marketing, especially email marketing campaigns System Admin Scaling databases (replication) General Server Optimization Transition from Google to AWS Originally posted on Himalayas