Top Senior Level Software Engineer Jobs in CO

Build and maintain data onboarding pipelines and automation to extract, transform, validate, and import retailer data from legacy POS systems. Optimize performance, ensure data quality, and collaborate with onboarding, product, and operations teams to scale retailer onboarding.

The Senior Python Engineer will design, test, and implement software for building systems, focusing on energy efficiency and data processing.

The Senior Data Engineer will design, build, and operate data pipelines for Zeta's AdTech platform, focusing on high-scale data processing and analytics-ready datasets.

The Senior Frontend Engineer will architect and develop core services using Angular, collaborating on design and maintenance of web applications, ensuring quality and security standards are met.

The Sr. Software Engineer, Front End will develop 2D and 3D frontend features, drive architectural direction, mentor junior engineers, and address technical debt under high accountability in a complex simulation environment.

As a Senior Software Engineer, you will design and develop foundational services for enterprise clients, focusing on backend architecture, system design, and operational excellence. You will utilize technologies like Go, PostgreSQL, and Kubernetes, and ensure high availability through observability tools.

The Sr. Software Engineer will design, develop, and deliver high-quality software features, monitor performance, conduct code reviews, and support team members in technical problem-solving.

Lead full‑stack projects for Upstart's Auto Refi and Auto Secured Personal Loans products. Collaborate with cross‑functional partners, make architectural decisions, deliver high‑quality, testable, resilient code, and propose ideas to improve product metrics and conversion.

Lead front-end development on a cross-functional team building user-focused UI features. Architect scalable, accessible component-based interfaces, ensure testing and quality, mentor engineers, and own features from inception through delivery.

Lead architecture and implementation of highly available, low-latency distributed services that synchronize shared client state. Define concurrency and conflict-resolution semantics, design for failure and recovery, own SLIs/SLOs and observability, drive cross-team alignment, mentor engineers, and deliver maintainable, tested systems at scale.