Top Senior Level Software Engineer Jobs in CO

Lead the engineering effort for a seed-stage dating app: audit and improve the existing codebase, design and build v2 (mobile and backend), implement real-time features, define engineering standards, scale infrastructure on AWS, and, after fundraising, hire and mentor a small team while shaping the technical roadmap.

Own and assess the existing Flutter codebase, recommend improvements, architect and build a 2.0 version post-funding, implement real-time features, scale infrastructure (NestJS, MongoDB, AWS), set engineering standards, and hire/mentor a small engineering team as a founding technical leader.

Lead enterprise application engineering delivery and operations across front-office, back-office, and employee platforms. Ensure stability, scalability, security, and alignment to business outcomes while driving simplification, automation, AI-enabled practices, lifecycle management, governance, and stakeholder value realization. Build and develop a high-performing engineering organization.

Lead and grow a frontend platform team owning Zocdoc's accessible React component library and design system. Define roadmap and technical strategy, drive adoption across web and mobile, institutionalize accessibility and quality, mentor engineers, partner with UX/Product/Analytics, and deliver platform improvements that speed frontend and mobile development.

As a Senior Fullstack Engineer, you'll contribute to backend development for Toast's New Ventures team, collaborating on architecture and launching MVPs while addressing unmet operator needs.

Lead architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

Design, build, and maintain a new cross-platform Flutter app for iOS and Android. Implement state management (Riverpod/BLoC/Provider), integrate RESTful APIs, optimize performance and security, manage app lifecycle and store deployments, work in an agile CI environment, and collaborate across the product team.

Design and develop flight software for space systems, mentor engineers, and ensure adherence to software development principles in an Agile environment.

Lead technical strategy and execution for multi-quarter initiatives; build and maintain AI-driven systems; mentor and raise the technical bar across teams; collaborate cross-functionally; ensure data security and HIPAA-compliant practices; operate in an AWS + Kubernetes environment while introducing new technologies as system load grows.

The Manager, GTM Business Systems will lead the business systems analysts team, manage Salesforce operations and enhance analytical capabilities, ensuring quality standards and team development.

Lead and grow a Data Foundations engineering team building high-throughput, reliable data platforms. Drive architecture and delivery for ingestion, buffering, enrichment, replication, storage, and query layers (ClickHouse, CDC, event streaming), ensure operability across SaaS/Dedicated/Self-Managed/Cells deployments, hire and coach engineers, and collaborate cross-functionally to deliver customer-facing reporting and search capabilities.