Senior Software Engineer II (Workflow)

Kargo creates breakthrough cross-screen ad experiences for the world’s leading brands and publishers. Every day, our 600+ employees bring the power of their creativity and diversity to radically raise the bar on what mobile, CTV, AI, social, and eCommerce can do to build businesses. Now 20 years strong, Kargo has offices in NYC, Chicago, LA, Dallas, Sydney, Auckland, London and Waterford, Ireland. Humble brag: In 2025, Kargo was recognized as a Best Place to Work by Built In.

Who We Hire

Success takes all kinds. Diversity describes our workforce. Inclusion defines our culture. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, marital status, age, national origin, protected veteran status, disability or other legally protected status. Individuals with disabilities are provided reasonable accommodation to participate in the job application process, perform essential job functions, and receive other benefits and privileges of employment. 

Title: 

Job Type: Full-time; 4 Days In Office, Mandatory Mondays

Job Location:  New York, NY

Salary Range: $160,000.00 - $x190,000.00 (On Target Earning)

The Opportunity

We are looking for a Senior Software Engineer II to join Kargo’s Workflow team . This team owns the tools and platforms that power the internal workflows across Kargo, with a strong focus on Campaign Management.

This role goes beyond just coding—you’ll be driving technical strategy, mentoring engineers, and ensuring our internal applications are scalable, reliable, and intuitive. As a full-stack engineer , you’ll contribute across backend services, APIs, and user-facing applications, ensuring seamless end-to-end delivery of features that support Kargo’s internal teams.

The Daily To-Do

• Design & Development : Architect, build, and maintain scalable web applications and APIs that power Kargo’s Workflow applications, especially Campaign Management.
• Full-Stack Contribution : Work across the stack — from database and backend services to frontend user interfaces — to deliver complete solutions.
• Collaboration : Partner with Product, Design, and Ad Operations teams to understand requirements and translate them into technical solutions.
• System Reliability : Ensure high availability, performance, and security of internal platforms.
• Technical Leadership : Provide mentorship, conduct code reviews, and set best practices for engineering excellence.
• Continuous Improvement : Drive improvements in developer productivity, system observability, and automation.

AdTech Domain Impact: Leverage industry knowledge to design features that integrate seamlessly with Kargo’s ad-serving ecosystem.

Qualifications

• 6+ years of professional software engineering experience, with at least 2 years in a senior or lead capacity.
• Full-stack experience , with proficiency in both backend development ( PHP, Go, Node.js, or similar ) and frontend frameworks (React, Angular, or Vue).
• Deep understanding of databases (SQL/NoSQL), distributed systems, and API design.
• Strong problem-solving skills with a focus on clean, maintainable, and testable code.
• Excellent communication and collaboration skills.

Follow Our Lead

• Big Picture:  kargo.com
• The Latest:  Instagram (@kargomobile) and LinkedIn (Kargo)