Top Engineering Jobs in Denver & Boulder, CO

Owns end-to-end EDI integration implementations, including requirements analysis, mapping, development, testing, deployment, monitoring, troubleshooting, and post-production support. The role develops data transformations and integrations across enterprise systems, manages trading partner implementations, ensures production readiness, and collaborates with business and product teams. It also serves as an integration subject matter expert, mentors specialists, and supports standardized, high-quality integration practices.

Design and implement scalable, secure, high-performance software systems and public-facing APIs. Lead system design, apply agentic coding workflows, collaborate with Product and Data Science, mentor engineers, and own initiatives improving efficiency, performance, and customer satisfaction. The role requires extensive experience with highly available distributed systems, API versioning and rate limiting, modern backend and frontend technologies, AWS, and Domain-Driven Design.

Designs and evaluates human interaction with complex aerospace and space mission systems. Responsibilities include defining human engineering requirements, applying human performance principles, conducting user research and prototype testing, performing workload and usability assessments, and integrating human factors across interdisciplinary engineering teams. The role requires knowledge of military standards, human systems integration, interface design, and systems engineering. It is fully onsite, requires occasional travel, and requires eligibility for a U.S. Top Secret/SCI clearance and special program access.

Lead systems engineering for space battle management, command and control programs. Responsibilities include defining requirements and interfaces, developing concepts of operations, analyzing system behavior, conducting trade studies, supporting agile software product lifecycles, and coordinating across software, hardware, cybersecurity, infrastructure, networking, and mission engineering teams. The role interfaces with customers and industry partners and requires an active Top Secret clearance, U.S. citizenship, and up to 10% travel.

Leads architecture, modernization, optimization, and reliability initiatives for mainframe CICS, MQ, and z/OS Connect environments. Provides technical direction across development and operations teams, establishes governance and change processes, tunes performance using telemetry, resolves incidents, and develops modernization roadmaps. Collaborates with stakeholders and enterprise architects to deliver secure, scalable, high-availability solutions while evaluating automation, cloud integration, and AI technologies.

Leads the architecture, modernization, resilience, security, and performance optimization of enterprise mainframe environments. Responsibilities include z/OS performance tuning, WLM and RACF administration, business continuity planning, automation, technical governance, incident resolution, stakeholder collaboration, and guidance of cross-functional engineering and operations teams. The role also evaluates cloud, DevOps, AI, and hybrid IT technologies for mainframe transformation.

Conduct thermal analysis and support thermal-system development for aerospace vehicles. Perform vehicle-level analysis, system design, first-order analysis, and apply aerospace principles and standards. Prepare technical data, reports, and presentations; collaborate with cross-functional engineering teams; participate in technical reviews and problem-solving; and communicate technical findings to engineers and stakeholders under general supervision.

Leads mechanical systems engineering for satellite programs, including architecture, requirements, interface control, integration, verification, testing, mass properties, nonconformance resolution, and flight hardware support. Coordinates structural, thermal, mechanism, and propulsion subsystem integration while advising technical leadership on system-level risks. Drives mechanical design from concept through production and flight test, supports manufacturing and operations, and improves engineering workflows and digital engineering practices.

Principal Software Engineer responsible for designing and developing enterprise software, making architectural and technical decisions, maintaining shared infrastructure and components, and improving security, performance, and reliability. The role mentors developers, establishes engineering standards, collaborates with product and design teams, supports existing products, troubleshoots complex issues, contributes to CI/CD and cloud initiatives, and works directly with customers and distributed teams.

Leads systems engineering for airborne augmented reality training systems across the full product lifecycle. Responsibilities include requirements development and traceability, system architecture, interface management, MBSE, trade studies, resource allocation, design reviews, integration, verification, technical risk management, and coordination across hardware, software, optics, test, airworthiness, and external partner teams.

Supports senior engineers with the analysis, design, and evaluation of mechanical systems, propulsion, structures, and environmental systems. Collects and analyzes data, resolves routine technical problems, prepares technical documentation and reports, and communicates findings within cross-functional teams. The role requires basic mechanical engineering knowledge, collaboration, attention to detail, and the ability to follow guidance while meeting project objectives and deadlines.

Manages EPDS cost accounts and project engineering activities, with primary responsibility for procurements, programmatics, supplier relationships, hardware definitions, interfaces, technical documentation, presentations, and subcontract management. The role requires engineering expertise in spacecraft-related hardware, planning, scheduling, specifications, and interface control, while coordinating multidisciplinary teams and supporting potential earned value management activities.

Provides senior-level RF and electromagnetics mentorship, develops advanced training content, advises engineers on complex antenna and microwave problems, and contributes to research involving metamaterials, metasurfaces, radar, nonlinear RF systems, and space-time modulated structures.

Supports physical and chemical laboratory testing, materials analysis, SEM inspections, failure investigations, and root-cause analysis for aerospace applications. Performs sample preparation, microscopy, thermal and mechanical testing, equipment maintenance, validation studies, technical reporting, and PWB inspections. Works with chemicals, cryogenics, adhesives, and laboratory instrumentation across cleanroom and production environments. Requires on-site work, local campus travel, vehicle operation, and potential security-clearance eligibility.

Design, build, and own backend services, APIs, and integrations supporting customer care workflows. The role connects Salesforce, billing, identity verification, document management, and iPaaS platforms; requires automated testing, code reviews, incident response, performance monitoring, and cross-functional collaboration. The engineer will also apply AI tools and may build production LLM solutions.

Designs, builds, and ships scalable full-stack features for Toast’s restaurant and retail technology platform. Responsibilities include developing resilient backend services and APIs, responsive web interfaces, distributed systems, and high-throughput enterprise solutions using Java, Kotlin, React, and TypeScript. The role requires solving ambiguous technical problems, ensuring system reliability and observability, applying engineering best practices, collaborating cross-functionally, and mentoring engineers.

Automate tests for web-based and mobile applications and RESTful APIs supporting high-transaction, big-data SaaS products. Drive high-quality releases, apply quality standards, support SDLC processes, solve complex problems, and promote a customer-first quality culture across the organization.

Own quality strategy and test coverage for life insurance underwriting decisioning. Design complex scenarios, validate rules engines and risk classifications, translate underwriting requirements into acceptance criteria, build automated API and data checks, investigate production discrepancies, and serve as the organization’s authority on underwriting correctness.

Build and architect scalable React Native mobile applications from scratch. Lead technical decisions involving app structure, patterns, libraries, coding standards, and architecture. Collaborate with cross-disciplinary teams, mentor engineers, conduct code reviews, plan major projects, and promote high-performance software engineering practices using Agile methodologies.

Build scalable backend services and infrastructure for mobile and web products. Design secure RESTful APIs, architect high-performance systems, apply engineering best practices, estimate and track Agile tasks, mentor teammates, collaborate with clients and engineers, and take ownership of technical solutions.

Lead development of custom Shopify themes and apps, optimize storefront performance and SEO, integrate APIs and third-party services, and collaborate with design, strategy, and engineering teams. The role requires maintaining scalable Shopify solutions, applying responsive design and modern development practices, and staying current with Shopify platform updates. This is a fully remote position with flexible work location and professional development support.

Lead frontend engineering for large-scale React web applications. Architect application patterns, structure, libraries, and coding standards; build React applications end to end; conduct code reviews; mentor engineers; promote performance, scalability, and maintainability; and collaborate with designers, product managers, and technical and non-technical stakeholders.

Design, build, test, deploy, monitor, and support scalable enterprise software across the full lifecycle. Evaluate requirements, estimate effort, identify risks, collaborate with Product Management, conduct code and design reviews, and improve architecture and development practices. The role requires full-stack Java and modern front-end experience, API and event-driven integration expertise, database design, incident response, and CI/CD experience with Docker and Kubernetes.

Provide technical direction for GitLab Dedicated, a managed single-tenant SaaS platform. Lead architecture and transformation across resilience, failover, tenant orchestration, change management, automation, and platform integrations. Identify systemic reliability and scalability risks, establish reusable platform patterns, strengthen service ownership, and guide cross-team technical decisions. Mentor senior engineers and advance engineering excellence across the organization.

Develop and enhance embedded firmware for memory controllers and SSDs. Responsibilities include debugging firmware and hardware issues, conducting bench testing and root cause analysis, improving product performance, collaborating with cross-functional engineering teams, and maintaining technical documentation. The role requires expertise in C-based embedded firmware, RTOS, memory management, compilers, and low-level system architectures, with preferred experience in SSDs, PCIe, NVMe, NAND flash, DDR, and AI-assisted development tools.