Top Tech Jobs & Startup Jobs in Denver & Boulder, CO

Seeking a Senior Fullstack Engineer with frontend focus in React, TypeScript, and Python. Responsibilities include frontend architecture, API building, and leading frontend standards. Requires 5+ years of experience with strong team collaboration.

Lead a backend engineering team as a player-coach building payment processing, fraud detection, compliance, and user management systems. Architect distributed microservices, drive technical decisions, write code, mentor engineers, coordinate cross-team integrations, and ensure reliable, regulatory-compliant, high-scale financial infrastructure.

Provide frontline technical support for API integrations and payments: own and resolve inbound tickets, triage and escalate appropriately, meet SLAs, document runbooks, monitor trends, and communicate clear technical guidance to clients while helping build support processes.

Monitor and reconcile transactions across ACH, RTP/FedNow, and card networks; triage and resolve payment exceptions, chargebacks, and settlement discrepancies; run SQL queries and build volume/limit projection models; communicate with sponsor banks and clients; maintain tracking of open operational items and document processes to support automation.

Manage day-to-day AP/AR, invoicing, vendor payments, reconciliations, month/quarter close support, reporting, and financial controls. Partner with Payments and Engineering to analyze billing, optimize costs, and support ad hoc financial analysis and process improvements.

Owner of multi-channel demand and ABM campaigns to generate pipeline for a B2B fintech. Plan, execute and optimize paid social, LinkedIn, email, and field programs; build account-tier programs with sales, activate content into nurture flows, select and stand up marketing tools, and report on marketing-sourced pipeline and conversion metrics.