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Staff Software Engineer

New York, New York

Who We Are 

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. 

The Role:

As a Staff Software Engineer at Moxxi, you’ll be a key driver in scaling our performance marketing platform and shaping the long-term technical vision of our ad delivery and optimization systems. You will lead complex initiatives across multiple domains from building resilient backend infrastructure and intelligent APIs to integrating ML driven campaign systems and rethinking marketer tooling. Operating as a senior individual contributor, you’ll partner with cross-functional stakeholders, mentor other engineers, and make architecture decisions that define the future of Moxxi’s core platform.

You’ll help us evolve our Ads infrastructure to support real-time personalization, performance tuning at scale, and rich experimentation frameworks. This role is ideal for engineers who enjoy solving deep technical challenges with direct business impact, who can bring clarity to ambiguity, and who are passionate about growing both systems and people.

Responsibilities:

  • 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 productionize 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.

Basic Qualifications

  • 10+ years of professional experience designing and delivering production-grade software systems.
  • Proven success architecting distributed systems and backend services in high-scale environments.
  • Strong fluency in Go (Golang) and experience building services using microservice architectures.
  • Deep knowledge of APIs, cloud-native infrastructure (e.g. GCP, BigQuery, Cloud Run), and data engineering patterns.
  • Hands-on experience with real-time systems, streaming data (e.g. Pub/Sub, Kafka), and event-based architectures.
  • Passion for performance marketing, experimentation frameworks, and measurable impact.
  • Outstanding communication skills, including the ability to influence stakeholders and lead through ambiguity.
  • Experience in the AdTech ecosystem (e.g., RTB systems, campaign management, creative tooling).
  • Prior ownership of infrastructure at scale, including observability, cost optimization, and compliance (e.g. GDPR, CCPA).
  • Knowledge of caching systems (Redis, Memcached), Infrastructure as Code (Terraform), and container orchestration (Docker, Kubernetes).
  • Exposure to non-relational databases (e.g., BigTable, DynamoDB) and caching systems such as Redis or Memcached.

Nice to Have / Bonus Qualifications

  • Master’s degree in Computer Science, Engineering, or a related technical field.
  • Familiarity with Ads infrastructure standards
  • Proficiency in TypeScript, with experience in frontend frameworks such as React or Angular, and building APIs or server-side logic with TypeScript (e.g., Node.js).
  • Prior work on cost optimization, performance tuning, or infrastructure efficiency at scale.
  • Familiarity with AI/ML-powered ad optimizations, A/B testing frameworks, or campaign experimentation systems.
  • Demonstrated impact as a Staff, Principal, or Area Tech Lead in a fast-paced, product-focused company.

Moxxi Values & Competencies

  • Self-Starter – You take initiative and solve problems before they become problems.
  • Curious & Analytical – You ask why, dig deep into data, and experiment to learn what works.
  • Efficiency-Oriented – Fast, focused, and action-driven.
  • Relationship-Focused – You build trust and deliver value.
  • Organized Multitasker – You thrive in fast-paced, high-velocity environments.
  • Strategic Communicator – You translate performance into insight and insight into action.

Salary Range

$195,000 - $270,000 USD

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