Top Senior Backend Engineer Jobs in Denver & Boulder, CO

As a Senior Software Engineer on the Identity team at Invitae, you will be responsible for building authentication and authorization systems critical to the company's success. You will play a key role in developing a new patient data service and ensuring data security and integrity. Responsibilities include planning and executing cross-functional initiatives, designing and implementing software systems, and providing technical leadership to the team. The role requires expertise in client-server architecture, distributed systems, and proficiency in modern programming languages like Python and Kotlin.

Responsible for working on the delivery management system and driving ezCater's business forward. Build products utilizing Ruby on Rails, React, and GraphQL. Solve technical problems, provide technical direction, and improve user experience.

The Staff Software Engineer on the Web Payment Experience team at Square mentors and teaches other engineers, sets technical direction, develops JavaScript APIs and UIs, maintains APIs for tokenization platform, and works on building reliable and delightful experiences for developers and merchants.

As a staff software engineer on the Web Payment Experience team, responsible for mentoring and teaching mid-level developers, setting technical direction, developing JavaScript APIs and UI, maintaining APIs in Go, and building reliable experiences for developers and merchants.

Design, build, and maintain backend services and infrastructures for a communications infrastructure team. Responsible for enabling multi-channel messaging, optimizing delivery, designing APIs, and collaborating with stakeholders for new product launches.

Ontra is seeking a Senior Full Stack Software Engineer to build and maintain web-based applications using Ruby on Rails and Ember.JS. The ideal candidate should have 7+ years of experience and a strong foundation in software development fundamentals.

As a software engineer at VORTO, you will help define the frontier of logistics optimization, supply prediction, and demand prediction. You will work with a small, dedicated team to build and maintain web applications using Angular / Typescript and implement supporting server endpoints in GoLang. You will also debug production issues and follow best practices to write high-quality, secure, and scalable code.

Join ServiceNow as a Staff Full-Stack Software Engineer in the UX Engineering group. Help drive a metadata-based UX framework for next-gen experiences on the NOW platform. Collaborate with product teams to build and support core framework features and capabilities. Design high-quality, scalable, and reusable code to meet customer needs. Mentor colleagues and promote knowledge-sharing within the team.

Seeking a Full Stack Web Developer to join the TSS Team of the CFO organization at DISH. Responsibilities include ideating software solutions, developing databases and applications, designing architecture, building front-end, creating security settings, writing APIs, and testing software. Skills required include SQL Server SSIS, AWS Redshift, AWS S3, HTML/CSS, JavaScript, XML, Jquery, .Net, React, C#, Python, REST, API, ASP, Agile framework, Abbyy, OCR technology.

Backend Web Software Engineer responsible for designing, developing, and maintaining web services to power customer-facing applications for autonomous machines. Collaborate with cross-functional teams, provide technical leadership, and ensure scalability and performance of software solutions.

The Distinguished Engineer at ServiceNow is responsible for hands-on technical outcomes and delivering robust web-based user experiences for all ServiceNow applications. They evaluate and formulate key architectural solutions, troubleshoot web flows, and set technical direction for web-based interfaces. The ideal candidate has senior-level experience as a Web architect or equivalent, with expertise in front-end systems design, Web performance, and Web runtime tools and frameworks.

As a Full Stack Software Engineer at Urban Sky, you will be responsible for architecting web portals, collaborating with diverse teams, and creating comprehensive documentation. The role requires 5+ years of experience in full-stack web development with expertise in Node.js, React, Typescript, Postgres, RestAPI, Jest, Git, and Cypress.

Seeking a Senior Software Engineer for the Growth Platform team at ezCater. Responsibilities include building back-end products, collaborating with cross-functional teams, and driving innovation. Requires 5+ years of professional software development experience and fullstack experience with Ruby on Rails.

Design, build, and maintain backend services and infrastructures for real-time messaging platforms. Collaborate with stakeholders to support product launches and optimize message delivery. Responsible for ensuring message delivery at scale while meeting security and compliance requirements.

As a Staff Software Engineer on the Square Credit Card Team, design features to expand access to Square Credit Card for sellers, build sophisticated financial systems and highly available services, collaborate with cross-functional teams, and mentor other engineers.

TextUs is seeking a Senior Backend Software Engineer with expertise in Ruby on Rails to help build applications. The role requires developing production APIs, reviewing documentation, managing tech debt, and collaborating with the team. Responsibilities include mentoring junior developers, maintaining CI/CD processes, and working in a remote environment.

Build high-quality, clean, scalable, and reusable code, work with product owners to deliver high-quality products, contribute to design and implementation of new features, mentor colleagues, and promote knowledge-sharing.