Senior Software Engineer - Marketing Technology

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

Summary

The Senior Business Systems Engineer is a key technical contributor whose primary responsibility is to support the corporate website and the Marketing team — maintaining and enhancing the company’s web presence, shipping new features and content experiences, and partnering daily with Marketing on SEO, campaigns, and content operations. Secondarily, this role participates in designing and implementing automated business solutions and building integrations across enterprise systems. This role requires a strong blend of software development skills, systems thinking, and the ability to translate business needs into reliable, scalable technical solutions. The ideal candidate is a collaborative self-starter who can work independently while partnering closely with business stakeholders across the organization.

Key Responsibilities

Corporate Website & Marketing Team Support (Primary)

• Serve as the primary engineering partner to the Marketing team — intake requests, scope work, and deliver against marketing priorities including campaigns, landing pages, SEO, and content updates.
• Own day-to-day maintenance, releases, and incident response for the corporate website (Nuxt 4 / Vue 3 / TypeScript, SSR on Vercel; staging on develop, production on main; CI via Azure Pipelines).
• Develop and ship new features and page templates across the site (home, expertises, news, team, technology, financing, contact, performance, legal), using SCSS (Dart Sass), Pinia for state, and file-based routing.
• Build and maintain Storyblok integration end-to-end: author and evolve component schemas, regenerate TypeScript references (storyblok-generate-ts), and write adaptors that normalize CMS payloads into view-models consumed by Vue components and composables (useStory / useStories).
• Partner with Marketing on SEO and performance — implement and maintain useSeo / Seo adaptor patterns, the custom sitemap module, structured data, and Core Web Vitals improvements.
• Maintain the site’s visual and motion layer: Three.js WebGL scenes, shaders, and overlays (with lil-gui for debug), GSAP animations, Lenis smooth scroll, @nuxt/image with the Storyblok provider, @blossom-carousel/vue, and inline SVG via vite-svg-loader.
• Uphold code quality and developer workflow
• Monitor site health, triage issues, and ensure uptime, accessibility, and a polished user experience across devices.

Business Process Automation & Integration

• Partner with business units to analyze workflows, identify automation opportunities, and document requirements.
• Design, develop, and implement automated solutions that improve operational efficiency.
• Build and maintain integrations between enterprise systems using iPaaS platforms (e.g., Celigo), REST APIs, and Web APIs.

Collaboration & Requirements Gathering

• Engage directly with stakeholders to understand business problems and translate them into clear technical specifications.
• Lead requirements gathering sessions and produce functional and technical documentation.
• Provide guidance and recommendations on technology solutions to business and IT leadership.

Support & Continuous Improvement

• Troubleshoot and resolve technical issues related to web applications, integrations, and automated workflows.
• Stay current with emerging technologies and recommend improvements to existing systems.
• Mentor and coach junior developers and analysts, conduct knowledge-sharing sessions, and help establish technical standards that elevate the IT team's capabilities.

Required Qualifications

• 5+ years of professional experience in software development, systems analysis, or a related IT role.
• Proficiency in Python and JavaScript for application development and automation.
• Hands-on experience building and maintaining a corporate marketing website with a modern JavaScript framework (Nuxt / Vue or equivalent React/Next stack) and a headless CMS (Storyblok strongly preferred); comfortable working directly with a Marketing team on SEO, content operations, and campaign delivery.
• Hands-on experience with enterprise integration/iPaaS platforms such as Celigo, Workato, MuleSoft, or equivalent.
• Strong working knowledge of REST APIs and Web API design, development, and consumption.
• Demonstrated ability to gather business requirements and deliver working technical solutions.
• Experience working cross-functionally with non-technical business stakeholders.
• Strong analytical and problem-solving skills with attention to detail.

Preferred Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or a related field (or equivalent work experience).
• Experience with version control systems (e.g., Git) and CI/CD pipelines.
• Familiarity with cloud platforms (AWS, Azure, or Google Cloud).
• Knowledge of database technologies (SQL or NoSQL) and data modeling.
• Experience with Agile or Scrum development methodologies.
• Prior experience in a mid-to-large enterprise IT environment.
• Experience with WebGL / Three.js, GSAP, or other interactive front-end visual and motion libraries on a production marketing site.

Core Competencies

• Technical Proficiency – Applies deep technical expertise to deliver reliable, high-quality solutions.
• Business Acumen – Understands business processes and translates operational needs into effective technology.
• Communication – Clearly conveys technical concepts to both technical and non-technical audiences.
• Problem Solving – Approaches complex challenges analytically and develops practical solutions.
• Collaboration – Works effectively across teams and builds strong working relationships with stakeholders.
• Ownership & Initiative – Takes accountability for deliverables and proactively identifies opportunities for improvement.

For US-based Roles - What You’ll Get

• Competitive salary + annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays

For Mexico-based Roles - What You’ll Get

• Competitive salary + annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For All Roles

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
• Accommodations: If you need an accommodation during the application process, email Ver el correo electrónico en click.appcast.io
• Benefits vary by role and location and are subject to change.