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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Fullstack Engineer - **Company:** MANGOMINT, INC. - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $39,520.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Artificial Intelligence, Airflow, Amazon Web Services, Bioinformatics, Code Review, Cursor (Graphical User Interface Elements), Web Development, Python (Programming Language), PostgreSQL, Node.Js, Next.js, TypeScript, Workflow Management Systems, Tailwind, ReactJS, Snowflake, Generative AI, Backend, Fastapi, Vue.js, Information Technology, Performance Monitor, Front End Software Development - **Published:** September 12, 2026 - **Apply:** https://www.builtincolorado.com/job/senior-fullstack-engineer-gtm/11144928?handler=ApplyRedirect ## About the Role * 5+ years of professional experience in web development * Expertise in JavaScript/TypeScript, with deep experience in modern SPA frameworks such as React, Next.js (preferred), or Vue.js * Experience with orchestration tools such as Inngest, Temporal, Prefect, Airflow, etc. * Comfortable using and managing agentic coding tools like Claude Code, Codex, Cursor, etc. for feature development and code review * Comfortable with ambiguity, fast iteration, and taking ownership of outcomes * Excellent communication and collaboration skills. Ability to work directly with non-technical stakeholders * Strong product and design sense Bonus points if you: * Have experience working in a startup environment * Experience with GTM processes like enrichment, lead distribution, etc. ## Description We're looking for a Senior Fullstack Engineer to help us build our CRM and automation platform to support sales, marketing, onboarding, and support. In this role you will work across the entire stack to develop features that make our business processes efficient and effective. As a Senior Fullstack Engineer at Mangomint, you'll join a small, technical team where your impact will be immediately visible. You'll have meaningful ownership over the features you build and the decisions that shape them. This position is perfect for someone who thrives with autonomy, values flexibility, and is excited to build internal products for their colleagues. In the Senior Fullstack Engineer role at Mangomint you will: * Build new features in our CRM (Next.js) and automations within our workflow automation platform (FastAPI and Inngest). * Partner with teams to understand their workflows and build solutions to automate them and improve them. * Develop agentic solutions for enrichment, task automation, etc. * Contribute ideas that help shape our internal products as they evolves * Take ownership of the features you build, from planning and implementation to monitoring and refinement Technologies You Will Work With * Frontend: TypeScript, Next.js, Tailwind CSS, Shadcn/ui * Backend: Node, Python, PostgreSQL, Snowflake, FastAPI, Inngest * Infra: Supabase, Vercel, AWS, Snowflake * AI: Codex, Claude Code, Claude Design While experience with our stack is helpful, we care more about your engineering skills and your ability to quickly learn and adapt to new technologies., Coordinates installation projects from initial customer and provider contact through scheduling, product delivery, compliance documentation, issue resolution, and post-completion work orders. Communicates with customers, service providers, stores, and vendors through inbound and outbound calls, documents interactions in company systems, ensures SLA adherence, assesses costs and chargebacks, and supports consistent customer service and process improvement in a fast-paced environment. Top Skills: Installation Management SystemMyredvestSalesforce Corporate Tools LLC Merchant Services Representative 3 Hours Ago Remote or Hybrid 19-19 Hourly Entry level 19-19 Hourly Entry level eCommerce * Legal Tech * Professional Services * Software * Data Privacy Conduct outbound consultation calls with clients about credit card processing, assess merchant needs, recommend cost-effective solutions, and convert leads into merchant account applications. Provide customer service, manage client relationships, communicate by phone and email, follow up on pricing quotes, and support other customer service teams. The role requires learning point-of-sale systems and credit card terminals while using consultative sales, negotiation, and problem-solving skills. 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