Senior Full-Stack Engineer

Engineering Role at B2B SaaS Company

An established, profitable US-based B2B SaaS company behind a decade-old, revenue-carrying sales-engagement platform (cold email and outreach automation). Small, lean team. This is the most important engineering hire on the product.

You will be a hands-on engineer who owns the platform day to day, end to end: backend services, frontend, AWS infrastructure, production debugging, and third-party integrations. Success in the first six months looks like this: you learn the stack fast, get it quiet by automating the manual work that still runs by hand, and then start building what's next. There is a clean handoff from the departing engineer, who will help you transition.

What You'll Own:

• Own the codebase end to end as the primary engineer: ship features, fix issues, keep production healthy
• Get the stack quiet in your first weeks by automating the manual processes that still eat time today
• Root-cause and resolve production incidents in live systems with paying customers: memory and heap issues, third-party API edge cases, queue backups
• Run deploys and infrastructure changes as routine daily work across the AWS stack
• Build and run your own AI agent workflows in Claude Code to multiply output across the repo
• Take specced work, fill the gaps yourself, and deliver real estimates you can hit
• Scope and build new products from scratch during heavier build cycles

What We're Looking For:

• 8+ years senior full-stack, comfortable being the primary engineer who owns the product end to end and makes the call
• Senior TypeScript and Node, fluent across both modern frameworks and long-lived legacy codebases
• Strong, current Angular, and genuinely energized to work in modern Angular. Someone still anchored to Angular 1.x who has no interest in the modern version is not a fit
• Strong AWS operations as daily work: ECS Fargate, Lambda, SQS, Aurora (MySQL and Postgres), SES, CodePipeline and CodeBuild
• Strong production debugging in systems with real paying customers
• Deep daily use of AI coding tools: you work in Claude Code and have built your own agent workflows
• You come from small or lean-team environments where you owned the whole thing, not big-company siloed teams
• You build for the love of it and can show what you've built

Nice to Have:

• React
• Email deliverability: DKIM, DMARC, SPF, warmup, blocklists, sender reputation
• Mailbox-provider APIs: Gmail API, Microsoft Graph, IMAP and SMTP, OAuth
• PHP and Laravel, Stripe or billing experience, Linux and Ansible, or a sales-tech / martech background
• Public open-source work, your own agent or MCP tooling, or an active local dev community you can tap for part-time help

Who You Are: You work well with a lot of autonomy: you find problems, fix them, and report back plainly. You have good product instincts, you think about customer impact, you treat billing code with care, and you would rather delete a dead feature than maintain it. You keep an eye on production because you care that it stays healthy. And you make AI tools a core part of how you work.

Tools and Stack: TypeScript, Node, Angular, AWS (ECS Fargate, Lambda, SQS, Aurora MySQL and Postgres, SES, CodePipeline, CodeBuild), Claude Code.

Details:

• Location: Remote, Latam
• Flexible PTO
• Time Zone: Strong US business-hours overlap (Colombia is already US-aligned)
• Salary: $60,000–$70,000/year USD
• Type: Full-time