Top Entry Level Software Engineer Jobs in Denver & Boulder, CO

Develop front-end and full-stack software and web applications for national security missions. Translate user and analyst requirements into user-friendly systems, select appropriate architectures and technologies, use continuous integration, and collaborate with teammates and users through design documents and whiteboard sessions. The role requires TS/SCI clearance and involves technologies including Java, Python, JavaScript or TypeScript, Angular, React, REST services, containers, Kubernetes, and databases.

Owns end-to-end production software, architectural decisions, and improvements to the engineering lifecycle. The principal engineer will expand AI-assisted development, make speed safe across reservations, payments, mobile, and international systems, and influence a growing team’s engineering practices. Success means enabling a fourteen-person team to ship with the effectiveness of a much larger organization.

Lead the technical direction of Zocdoc’s patient acquisition platform, building scalable APIs, microservices, AWS infrastructure, and React experiences. Improve SEO, page speed, system reliability, and patient-facing data access. Collaborate with Product, Design, and Marketing, integrate third-party data and Contentful, apply LLM technology, promote engineering excellence, mentor engineers, and drive AI-focused innovation across distributed teams.

Develops and debugs software enhancements and subsystems for systems software, including operating systems, networking, databases, utilities, and Internet tools. Executes test plans, identifies and resolves issues, and collaborates with internal and outsourced development partners. Contributes to project teams delivering reliable, cost-effective solutions for low- to moderately-complex products while applying foundational software design, coding, testing, and debugging knowledge.

Leads technical direction and multi-year strategy for Netflix’s Application Networking organization. Partners with engineering leads to shape architecture for globally scaled distributed systems, service-to-service communication, external traffic, identity, security, and access enforcement. The role addresses complex, ambiguous technical challenges, influences stakeholders across business units, contributes to open-source or industry standards, develops senior engineers, and communicates with engineering, product, and executive audiences.

Design and deliver full-stack applications spanning user interfaces, data models, APIs, backend services, cloud infrastructure, and AI-enabled workflows. Build vector-store and RAG capabilities, deploy Azure services with Terraform and containers, and contribute to architecture, technical roadmaps, code reviews, testing, and system operations. Collaborate directly with business stakeholders to understand needs and deliver scalable, secure, enterprise-grade software. The role also involves identifying patentable innovations, preparing disclosures, and supporting patent prosecution.

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Build and maintain performant, accessible consumer-facing experiences for Netflix’s iOS app using Swift and GraphQL. Collaborate with product managers, designers, and engineers to scope projects, refine interfaces, develop shared infrastructure, and make architectural trade-offs. Teams may focus on client foundations, server-driven UI, advertising frameworks, or ad insertion. Responsibilities include writing robust maintainable code, automation, documentation, and supporting high-quality, scalable mobile experiences.

Build and ship Android features and foundational infrastructure for Netflix’s global app. Responsibilities include designing maintainable, testable code; developing shared frameworks and tooling; partnering with product, design, and engineering teams; modernizing Android practices; using automated testing; scoping projects and making technical trade-offs; and applying GenAI tools to improve development workflows.

Contribute to AI-powered healthcare workflows by designing and implementing features, collaborating across teams, while ensuring code quality and scalability.

Develop, maintain, and test complex software systems for the GBSD/Sentinel program. Implement algorithms, handle real-time and large-data processing, design software components, resolve defects, and participate in lifecycle activities using MBSE, OOP languages, and structured development processes.

Design and develop core backend components for a blockchain network using Rust, ensuring reliability and scalability in production-grade software.

The fellowship offers hands-on experience in software engineering, focusing on data engineering, cloud-native applications, and Agile workflows with mentorship from experienced professionals.

Design and build performance-focused TV UI architectures for Netflix’s streaming applications across smart TVs, game consoles, and cable boxes. Enable scalable development for engineering teams by improving developer experience, ergonomics, resource management, performance, memory usage, and technology integration. Responsibilities include systems-level architectural thinking, API design, profiling, collaboration with UI, design, platform, and tooling teams, and making thoughtful implementation trade-offs.

Own collaborative editing across React clients and Node services, including offline storage, queued mutations, realtime WebSocket synchronization, conflict resolution, and data persistence. Build agent-enabled editing experiences, investigate data-loss issues across environments, and collaborate with designers, backend engineers, and open-source contributors. The role requires production TypeScript experience across React and Node, rich-text editor frameworks, offline applications, WebSockets, and advanced Postgres skills.

Provides technical leadership for radar digital signal processing software supporting object identification and tracking in geosynchronous orbit. Designs, develops, tests, debugs, and optimizes high-performance DSP applications using C++, CUDA, and GPU acceleration. Leads architecture and algorithm decisions, collaborates with systems and hardware teams, supports secure high-side development, mentors engineers, and applies AI-enabled development tools while maintaining code accountability.

Build software that integrates with physical turbomachinery and factory systems: own components, ship production-ready code quickly, work with telemetry, HPC/GPU workloads, AI agents, and collaborate directly with engineers and technicians to deliver tools used in testing, design, and operations.

Build and maintain cross-platform Electron desktop apps focused on reliability, performance, and real-time behavior. Implement desktop features (file access, notifications, auto-updates), integrate AI via backend APIs, optimize startup/memory, profile Electron overhead, manage large local state and message history, and ensure stability on macOS and Windows.

Collaborate on software projects, writing code in Java, utilizing Agile methodologies, ensuring compliance with security protocols and optimizing performance.

Develop software across requirements analysis, design, coding, testing, quality assurance, DevOps, data analysis, and maintenance. Collaborate with multidisciplinary engineering teams to support vehicle development, testing, and operations. Troubleshoot server-side and client-side issues and create efficient solutions using modern programming languages, source control, and development tools.

The Software Engineer will develop and operate the Praetorian Guard platform, implement backend and frontend solutions, and collaborate with security engineers on features and scalability.

Leads application engineering for an AI-powered email product, owning backend, mobile, and desktop architecture. Designs reliable AI workflows with orchestration, state management, retries, fallbacks, and failure handling; builds APIs connecting AI capabilities to product experiences; and leads a senior engineering team through architectural decisions, reviews, mentorship, and production excellence. Partners with ML leadership to ship scalable, observable, secure, and reliable systems while balancing latency, cost, user experience, and maintainability.

Develops and supports software applications. The posting requires U.S. citizenship or naturalized citizenship and mandates that all work be performed within the continental United States, Alaska, or Hawaii.

As a Full Stack Software Engineer at Goodbill, you'll develop data systems and user experiences, work with diverse data sources, and integrate AI features, ensuring high-quality consumer-facing applications.

Mudflap seeks software engineers to build and scale their payments platform using Ruby on Rails, collaborating cross-functionally and owning features end-to-end.