Full-Stack Developer - SMPT/Web Scraper Product

Job Summary:

Were 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. Youll 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