Full Stack Engineer

Exact compensation may vary based on several factors, including skills, experience, and education.

• Benefit packages for this role will start on the 31st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law. The ideal candidate will be responsible for planning, coordinating, and implementing projects within the decided-upon budget, timeline, and scope. They will also effectively monitor and present project updates to relevant stakeholders, clients, or project team members.

Job Title: Full-stack Web Developer - Optimizely

Permanent, W2 Opportunity

Location: Hybrid Role, 2-3x a week in Denver, CO

Salary: 99K-132K

We are seeking a highly skilled Senior Optimizely Developer to serve as the technical backbone of our digital growth and web experience initiatives. Reporting directly to the Senior Product Manager of Optimizely, you will be the resident technical expert in the intricacies of the Optimizely ecosystem, responsible for developing within both Optimizely CMS and Optimizely Web Experimentation.

In this critical role, you will bridge the gap between backend content architecture and frontend user experience. You will build scalable, high-performing CMS components for our B2B corporate website while simultaneously coding complex, data-driven A/B tests and personalization campaigns. If you have deep, hands-on expertise in the Optimizely stack and love writing clean code that directly drives business performance, this is the role for you.

Key Responsibilities

Optimizely CMS Development (Backend & Architecture)

• Component & Template Build: Design, develop, and maintain reusable blocks, page templates, and content models within Optimizely CMS (formerly Episerver) to empower marketing teams to launch pages quickly.
• Platform Architecture: Ensure the CMS architecture is scalable, secure, and optimized for performance (Core Web Vitals).
• Integrations: Build and maintain API integrations between Optimizely CMS and our broader enterprise tech stack (e.g., Salesforce, Marketo, Adobe Commerce, and custom internal systems).

Experimentation & Personalization (Frontend Execution)

• Complex Test Engineering: Code and deploy complex A/B, split, and multivariate tests within Optimizely Web Experimentation. Handle advanced scenarios that go beyond basic WYSIWYG editing, requiring deep DOM manipulation and dynamic content rendering.
• Personalization Deployment: Engineer targeted, brand-compliant personalization campaigns tailored to specific B2B user segments and account-based marketing (ABM) lists.
• Server-Side Testing: Collaborate on server-side testing initiatives and feature flagging using Optimizely Feature Experimentation (Full Stack) when frontend execution is insufficient.

Quality Assurance & Code Governance

• Technical QA: Conduct rigorous cross-browser and cross-device testing for all CMS deployments and active experiments to ensure a flawless user experience without layout shifts or flicker.
• Code Quality & Best Practices: Establish and document technical best practices, coding standards, and governance rules for our Optimizely environments.

Cross-Functional Collaboration

• Partner with CRO & Product: Work hand-in-hand with the Senior Product Manager (Optimizely), Senior Manager of CRO, and Manager of CRO to evaluate the technical feasibility of proposed tests and CMS features.
• Collaborate with UX/UI: Partner with design teams to translate wireframes and Figma prototypes into pixel-perfect, interactive digital experiences.

Qualifications & Requirements

• Experience: 5+ years of full-stack web development experience, with at least 3+ years of dedicated, hands-on experience developing within the Optimizely ecosystem.
• CMS Backend (Critical): Deep expertise in C#, .NET Core / MVC, and backend architecture specifically for Optimizely CMS (Episerver).
• Experimentation Frontend (Critical): Advanced proficiency in HTML5, CSS3/SASS, and JavaScript (Vanilla, ES6+, jQuery, React/Vue) to build complex DOM manipulations and dynamic web experiences for Optimizely Web Experimentation.
• Optimizely Intricacies: Deep understanding of Optimizely’s specific platform nuances, including Project JS, visual tags, audience targeting logic, anti-flicker snippets, and caching behaviors.
• B2B Web Experience: Experience developing for complex enterprise B2B websites, including lead generation funnels and gated content workflows.
• Version Control & CI/CD: Strong experience using Git and modern CI/CD pipelines (e.g., Azure DevOps, GitHub Actions) for seamless code deployment.

Certifications (Bonus): Active Optimizely Developer certifications (CMS or Web Experimentation) are highly preferred.