Senior Software Engineer

At Moxxi, we’re redefining performance marketing with cutting-edge technology and a relentless focus on results. As a profitable, bootstrapped start-up, we are led by a team of industry veterans in performance marketing, ad tech, and digital publishing. Together, we’re building the premier platform to incubate, scale, and optimize digitally born businesses, setting new standards for data-driven success.

Our entrepreneurial team brings proven experience from both global corporations and fast-growing startups. We’re passionate about delivering scalable, profitable outcomes for our partners through advanced profiling, targeting, and continuous optimization. Joining Moxxi means becoming part of a growing start-up in the heart of NYC, where you’ll have the opportunity to accelerate your career, expand your skill set, and shape the future of performance marketing.

As a Senior Software Engineer at Moxxi
, you ll play a critical role in building the platforms and tools that power our performance marketing engine. From designing intuitive interfaces in our CMS and CRM to scaling backend systems for real time ad delivery and A/B-driven optimizations, you’ll operate across the stack to bring ideas to life. You’ll be hands-on with data, APIs, UI components, and machine learning integrations collaborating closely with cross functional teams to solve meaningful business problems through code.

If you re passionate about performance, experimentation, and building high impact products in a fast paced environment, this role is for you.

• Architect, develop, and maintain scalable and resilient backend systems powering our CMS, AdServer, CMS, CRM, and optimization pipelines.
• Build reusable UI components and responsive interfaces that allow marketers to manage, launch, and analyze campaigns with ease.
• Build high performance APIs and services that integrate with internal platforms and external ad ecosystems.
• Partner with the Account Managers and Operations team to product ionize models that drive ad personalization, budget pacing, and bid optimization.
• Design and evolve real time and batch data pipelines that support campaign analytics, attribution, and experimentation at scale.
• Lead cross functional collaboration with product, design, and business teams to translate requirements into robust software solutions.
• Ensure system observability, operational excellence, and uptime across critical infrastructure components.
• Mentor junior engineers and contribute to a culture of clean, maintainable, and well-documented code.
• Drive technical planning and contribute to the evolution of our platform strategy and long-term architectural vision.
• Stay up to date with industry trends in advertising technology, distributed systems, and machine learning and bring relevant innovations into the team.
• Take ownership of major initiatives and continuously identify opportunities to improve performance, scalability, and developer experience.

• Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.
• 7+ years of professional experience building and maintaining production-grade software systems, including significant experience in full-stack development.
• Deep experience writing scalable backend services in Go
  , ideally within microservice-based architectures.
• Proficiency in Type Script , with experience in frontend frameworks such as React or Angular
  , and building APIs or server-side logic with Type Script (e.g., Node.js).
• Experience designing and integrating RESTful APIs and working with distributed systems.
• Familiarity with cloud-native development using Google Cloud Platform (GCP) services, particularly Big Query and Cloud Run
  .
• Understanding of software engineering fundamentals including system design
  , data structures
  , and algorithms
  .
• Strong attention to detail, debugging, and performance optimization skills across the stack.
• Excellent communication and collaboration skills; able to work effectively with cross-functional teams, including product, data, and design.
• A self-starter mindset with a passion for shipping features, solving real-world business…