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
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