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Top Senior Level Javascript Jobs in Denver & Boulder, CO

99+ Job Results
16 Hours Ago
Colorado, CO
500 Employees
185K-245K Annually
5-7 Years of Experience
500 Employees
185K-245K Annually
5-7 Years of Experience
eCommerce • Fashion • Mobile • Sports
As a Software Engineer in the Infrastructure team at Whatnot, you will be responsible for building and scaling the live streaming and marketplace service. This role involves ensuring the availability, performance, security, and scalability of production systems, working on deployment across different environments, and scaling for high-volume events.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+24 More
Yesterday
Colorado, CO
180 Employees
7+ Years of Experience
180 Employees
7+ Years of Experience
Fintech • Payments • Software • Financial Services
Designs, develops, and maintains software solutions for BillGO's Bill Pay products. Collaborates with cross-functional teams to deliver features and improvements. Responsible for code design, implementation, maintenance, and monitoring. Stays updated on latest technologies and proposes process improvements. Ensures compliance with regulatory requirements and industry standards. Mentors junior developers and new team members.
Top Benefits:
401-K
Child Care Benefits
Company Equity
+48 More
Yesterday
Colorado, CO
Remote
3,300 Employees
5-7 Years of Experience
3,300 Employees
5-7 Years of Experience
Information Technology • Security • Cybersecurity
Seeking experienced front-end engineers to join the team in building and scaling services at Cloudflare. Responsibilities include working on large-scale applications, focusing on code quality and customer experience, collaborating with team members, and using modern frontend frameworks like React or AngularJS.
Top Benefits:
401-K
Child Care Benefits
Commuter Benefits
+45 More

Featured Jobs

Yesterday
Colorado, CO
Remote
12,000 Employees
290K-435K Annually
7+ Years of Experience
12,000 Employees
290K-435K Annually
7+ Years of Experience
Blockchain • eCommerce • Fintech • Payments • Software • Financial Services • Cryptocurrency
As a Principal Front-end Software Engineer on the Web team, you will share ownership in Square's Dashboard web application, establish best practices with React, prioritize tooling investments, advocate for architectural tradeoffs, drive process improvements, and mentor engineers.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+55 More
Yesterday
Colorado, CO
Remote
12,000 Employees
290K-435K Annually
7+ Years of Experience
12,000 Employees
290K-435K Annually
7+ Years of Experience
eCommerce • Fintech • Hardware • Payments • Software • Financial Services
As a Principal Front-end Software Engineer on the Web team, you will share ownership in Square's Dashboard web application, establish best practices with React, advocate for tooling investments, review technical documents, advocate for process improvements, and mentor engineers across the organization.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+55 More
2 Days Ago
Colorado, CO
Remote
Hybrid
2,344 Employees
193K-272K Annually
7+ Years of Experience
2,344 Employees
193K-272K Annually
7+ Years of Experience
Fintech • HR Tech
As a Senior Staff Software Engineer at Gusto, you will lead the innovation of customer-facing products, drive technical management of large projects, and oversee the development of features in complex domains. You will collaborate with cross-functional teams to address customer pain points and deliver solutions that customers love.
Top Benefits:
401-K
Adoption Assistance
Commuter Benefits
+29 More
3 Days Ago
Colorado, CO
Remote
200 Employees
160K-180K Annually
7+ Years of Experience
200 Employees
160K-180K Annually
7+ Years of Experience
Consumer Web • HR Tech
Looking for a dynamic Staff Engineer to lead large-scale architecture initiatives and build Platform services impacting Built In Engineering. Responsible for architecting robust distributed systems designs, coding systems for wide-ranging product lines, and collaborating with Product & Technology teams to build platform services. Must have 10+ years of development experience in .Net and expertise in AWS, Azure, or GCP.
Top Benefits:
401-K
Commuter Benefits
Company Equity
+14 More
3 Days Ago
Colorado, CO
Remote
Hybrid
1,200 Employees
127K-146K Annually
7+ Years of Experience
1,200 Employees
127K-146K Annually
7+ Years of Experience
Cloud • Healthtech • Payments • Professional Services • Software • Analytics • Automation
Seeking a Senior Software Engineer proficient in Java to lead development efforts for Data Connect product. Responsibilities include designing and implementing technological solutions, REST API design, UI development, automated testing, and coordinating with offshore team. Must have 8 years of Java experience, Bachelor's degree, and strong Agile/Scrum knowledge.
Top Benefits:
401-K
401-K Matching
Child Care Benefits
+52 More
4 Days Ago
Colorado, CO
Remote
20,000 Employees
143K-250K Annually
5-7 Years of Experience
20,000 Employees
143K-250K Annually
5-7 Years of Experience
Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
Manage product development activities, work with cross-functional teams to create high-quality solutions, solve ambiguous problems, manage development team resources, and enhance engineering team performance.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+42 More
4 Days Ago
Colorado, CO
Remote
50,000 Employees
180K-230K Annually
7+ Years of Experience
50,000 Employees
180K-230K Annually
7+ Years of Experience
AdTech • Cloud • Digital Media • Information Technology • News + Entertainment • App development
Seeking a Principal Software Engineer for the Emerging Platforms team to work on cutting-edge generative AI and large language models. Responsibilities include developing technical strategy, identifying business opportunities through data analysis, leading engineering efforts, mentoring team members, and driving technical skills development.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+58 More
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