Top Staff Software Engineer Jobs in Denver & Boulder, CO

The Lead Rust Software Engineer will design and build scalable applications, mentor teams on Rust, and contribute to complex product development.

Design and scale a feature flagging and A/B testing platform, including high-throughput event ingestion, warehouse-native analytics, real-time feature flag delivery, multi-database SQL support, and distributed systems infrastructure. The role involves full-stack development, architecture, performance optimization, reliability engineering, and technical product influence within a remote startup team.

Build, deploy, and operate scalable, fault-tolerant software products and tools used by millions of consumers. Design solutions, decompose complex requirements, leverage AWS and AI technologies, contribute to CI/CD, write tests, review code, and maintain observability, reliability, security, and cost efficiency. Lead technical initiatives, mentor engineers, and own solutions throughout the production lifecycle.

Own and extend Airbnb’s Minerva semantic layer and data-authoring platform. Build core services, including query rewriting, and deliver reliable systems that help internal users define and consume business metrics. Scope ambiguous, cross-team initiatives, partner with users and product teams, evaluate data and database technologies, and manage design, implementation, testing, deployment, and on-call responsibilities.

Lead design and delivery of enhancements to a next-generation AI agent platform. Own large features and infrastructure, mentor engineers, set technical standards, drive cross-team initiatives, improve reliability and SLOs, and influence product and process decisions to scale systems supporting millions of interactions.

The Staff Software Engineer will build and maintain GoGuardian's Safety product suite, lead architectural decisions, mentor developers, and champion AI adoption in engineering workflows.

Lead iOS platform initiatives that improve developer productivity and AI-agent effectiveness across software development workflows. Build and enhance frameworks, tooling, libraries, build systems, CI, and testing infrastructure for Airbnb’s large-scale Swift codebase. Collaborate cross-functionally to identify inefficiencies, drive roadmap projects, support migrations, and improve AI-agent execution time, token efficiency, reliability, and quality.

Design and implement experiments deep within browser engine subsystems, including DOM, layout, rendering, accessibility, JavaScript runtimes, and networking. Investigate browser behavior, prototype capabilities for programmatic web interaction, measure performance and correctness, profile overhead, and document results. The role requires hands-on systems engineering, browser platform expertise, large-codebase development, and collaboration on AI-agent tooling.

Build and maintain large-scale healthcare data platform software using HL7/FHIR, Apache Spark, Python, Scala, Databricks, and cloud technologies. Shape technical roadmaps, architecture, and implementation approaches; collaborate with product and business stakeholders; maintain CI/CD and staging environments; and mentor junior engineers. The role requires deep healthcare data expertise, technical leadership, and experience with modern software engineering and integration practices.

Lead hands-on full-stack development of scalable product features, from database models through UI components. Set technical direction, architect and optimize systems, mentor engineers, conduct code reviews, improve workflows, and champion testing, code quality, and continuous deployment. Collaborate with product and design teams, resolve technical bottlenecks, and lead production releases in a fast-paced startup environment.

Provides technical leadership for SingleStore Flow, a data migration and integration product. Designs and implements reliable distributed systems spanning CDC pipelines, migration engines, APIs, and cloud services. Leads architecture, complex technical initiatives, production troubleshooting, observability, testing, and operational improvements. Partners with product, support, customers, and engineering teams while mentoring engineers and advancing AI-assisted development and migration capabilities.

Lead the technical vision for test automation and quality architecture across cloud, web, and mobile systems. Design scalable testing frameworks, integrate automation into CI/CD pipelines, analyze quality metrics, mentor engineers, guide technical decisions, and communicate outcomes to engineering leadership. The role emphasizes Playwright with TypeScript, Maestro with YAML, API and integration testing, system validation, and AI-first automation practices.

Leads the architecture and development of Greyspace, a realistic simulated internet for cyber ranges. Designs distributed services, APIs, orchestration, networking behavior, isolation boundaries, and operator workflows. Builds and reviews production software, validates DNS, TLS, web, and mail services, and ensures reliability through testing, observability, performance validation, recovery procedures, and deployment readiness. Partners across Product, Security, infrastructure, and engineering teams while mentoring engineers and driving technical standards.

Owns Linux kernel engineering for Fastly’s global edge network, including kernel development, networking, XDP/eBPF, hardware enablement, performance, debugging, upstreaming, and fleet-scale production operations. The role leads technical projects, manages kernel releases and staged rollouts, resolves production incidents, improves observability and reliability, collaborates across teams, and mentors engineers while participating in on-call rotation.

Lead technical strategy and execution for multi-quarter initiatives, build and maintain software systems using AI, mentor and elevate engineers, collaborate across disciplines, and protect user privacy and security. The role involves working in an AWS and Kubernetes environment with technologies including Python, TypeScript, React, Go, Airflow, dbt, and Claude Code.

Leads technical direction for Everand’s backend platform, including architecture, reliability, observability, CI/CD, databases, queues, and scalable distributed systems. Partners with product, design, analytics, web, mobile, and ML teams to deliver personalized reading and listening experiences. Mentors engineers, drives architecture reviews and modernization efforts, improves technical quality, and owns platform health, performance, cost, and resilience.

Leads architecture and technical direction for scalable, high-availability software services. Owns complex, multi-team initiatives, makes autonomous technical decisions, partners cross-functionally, mentors engineers, establishes standards, and advocates for quality. The role develops mission-critical systems supporting millions of endpoints and requires deep Java expertise, scalable system design, API development, relational databases, and strong testing practices.

Lead front-end architecture and cross-team technical initiatives for the NodeZero platform. Build scalable React and TypeScript systems, reusable components, developer tooling, and shared frameworks while improving performance, reliability, accessibility, observability, and CI/CD workflows. Mentor engineers, establish engineering standards, guide technical strategy, reduce technical debt, and collaborate with Product, Design, Platform, Security, and engineering teams.

Design, build, and operate high-throughput, low-latency ad-serving infrastructure processing millions of requests per second. Optimize GPU-powered TensorRT inference, feature stores, model serving, benchmarking, experimentation tooling, and system reliability. Partner with machine learning engineers to productionize models and own systems through design, deployment, observability, capacity planning, incident response, and optimization.

Lead the technical evolution of Kilo Code, a large-scale VS Code AI coding extension. Responsibilities include setting architecture and performance direction, building advanced AI-assisted workflows, optimizing startup time and memory usage, driving cross-team initiatives, mentoring engineers, owning production delivery, and establishing engineering standards for context optimization and LLM workflows. The role partners with Product and Design to shape roadmaps and requires hands-on technical leadership across a mature codebase serving millions of users.

Leads architecture and development of highly available, distributed backend systems supporting Airbnb’s AirCover insurance platform. Owns policy, coverage, enrollment, regional rules, experimentation, and scalable multi-region capabilities. Partners with product, data science, legal, and engineering teams; analyzes conversion data; ensures auditability, privacy, reliability, and data integrity; mentors engineers; and applies emerging technologies such as LLMs where beneficial.

Build and scale Fastly’s edge Compute hosting infrastructure. Develop high-performance Rust platform code addressing back pressure, resource limits, service interactions, concurrency, and asynchronous execution. Analyze performance and stability issues, maintain highly available production systems, contribute to code reviews and open source, and lead technical projects across teams. The role also involves designing customer-facing APIs, communicating with stakeholders, and participating in on-call rotations.

Build and lead a new developer-experience and platform function for third-party DAT integrators. Develop SDKs and tooling in TypeScript, create AI-friendly documentation and OpenAPI specifications, and implement API logging, monitoring, governance, and observability. Take proofs of concept into production, lead multi-team technical initiatives, improve integration reliability and performance, collaborate across Product, Support, and Engineering, and mentor engineers.

Lead architecture and reliability for a high-scale alerting platform. Design rule-based, ML-driven, and correlated detection systems; own Kafka-based event delivery, webhook reliability, idempotency, and sustained-load performance. Transform security and network telemetry into topology and dependency models that support LLM-assisted investigation and remediation. Provide cross-team technical leadership, mentor engineers, and guide long-term platform strategy across multiple alerting teams.

Design and build the core vCluster Platform using Go and deep Kubernetes expertise. Own backend features end to end, from technical design through release, while solving complex systems architecture challenges involving networking, storage, isolation, and resource sharing. Contribute to open-source projects and the Kubernetes community, operate autonomously in a high-growth startup, and help define scalable Kubernetes multi-tenancy solutions.