Senior Software Engineer I

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: Senior Software Engineer I

Job Type: Full-time; 3 Days In Office
Job Location: New York, NY
Salary Range: $150,000.00 - $180,000.00 (On Target Earning)

The Opportunity

As a Senior Software Engineer, you will be responsible for taking on a leading role within Kargo’s contextual and identity-targeting platform and will be integral in mentoring and guiding others.

You’ll work within Kargo’s large-scale distributed advertising auction platform to build and optimize contextual and identity-targeting solutions while working with large amounts of data across multiple Aerospike clusters.

You have a strong background in Ad Tech, having worked within an SSP or DSP, and have a familiarity with how identity and contextual targeting work.

The Daily To-Do

• You are a seasoned software engineer who writes clean and effective code
• You are experienced in working with multiple languages and frameworks to help you understand which is the right tool/language for whichever is problem at hand
• Strong understanding of software design patterns and able to clearly communicate guidelines and best practices that the whole team should follow
• Strong analytical skills that help in identifying where and when to fix a bug vs when it makes sense to refactor the codebase to prevent similar issues in the future
• You have experience working on both frontend and backend and understand how to architect a larger system
• Work with other team members to fix and deploy any bugs or features that come your way, as well as to set Best Practices and help improve upon the way we build products
• Participate in architecture planning, code reviews, and learning sessions to help spread knowledge
• Identify and initiate investigations into new technologies, prototype, and test solutions for product features, and design and validate production designs that deliver exceptional user experiences

Qualifications

• B.S or higher in Computer Science, Mathematics, Physics (or equivalent work experience)
• 5+years of experience working in the Software industry or a related field
• Strong portfolio (i.e. Github) demonstrating past work experience
• Strong knowledge of the Software Development Life Cycle, including QA and deployment processes
• Experience reviewing other developers’ code and mentoring more junior developers
• Robust algorithms, data structures, and coding background
• Expert in either Go or C++ in large-scale systems
• Experience working in a Dockerized Kubernetes environment on AWS is a major plus
• Experience managing large-scale data storage and processing systems such as Apache Hadoop, Aerospike, Apache Spark, and/or Apache Kafka
• Ability to take a loosely defined idea from the brainstorming phase to production, including the architecture plan, development, and testing process
• Excellent communication, presentation, interpersonal, and analytical skills; the ability to communicate complex, interactive design concepts clearly and persuasively

Follow Our Lead

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