Senior Software Engineer I

ZipRecruiter; New York (NY); Hybrid; USD 150,000 - 180,000; Full time

Job summary

An established industry player is seeking a Senior Software Engineer to lead within their innovative advertising platform. This role involves mentoring others while optimizing contextual targeting solutions and managing large data across multiple clusters. Ideal candidates will have a solid background in Ad Tech, with strong skills in Go or C++, and experience with large-scale data systems. Join a dynamic team where your contributions will directly impact cutting-edge projects and drive the future of advertising technology.

Qualifications

• 5+ years of experience in software development or related fields.
• Strong portfolio demonstrating past work and knowledge of SDLC.

Responsibilities

• Write clean and effective code as a seasoned software engineer.
• Collaborate with team members to fix bugs and deploy features.

Skills

Software Development

Algorithms

Data Structures

Go

C++

Docker

Kubernetes

AWS

Hadoop

Spark

Kafka

Education

B.S. in Computer Science

Mathematics

Physics

Tools

GitHub

Aerospike

Job description

Job Description

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 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. Describes our workforce. Defines our culture. We do not discriminate on the basis of race, gender, age, religion, sexual orientation, marital status, disability, protected veteran status, 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 take a leading role within Kargo's contextual and -targeting platform and will mentor and guide others. You'll work within Kargo's large-scale distributed advertising auction platform to build and optimize contextual and -targeting solutions while managing large data across multiple Aerospike clusters. A strong background in Ad Tech, experience within an SSP or DSP, and familiarity with how contextual targeting works are essential.

The Daily To-Do

• Write clean and effective code as a seasoned software engineer
• Work with multiple frameworks to select the right tool for each problem
• Understand software design patterns and communicate guidelines and best practices
• Analyze and fix bugs efficiently and refactor code to prevent future issues
• Experience with both frontend and backend architecture
• Collaborate with team members to fix bugs, deploy features, and improve development practices
• Participate in architecture planning, code reviews, and knowledge sharing sessions
• Research new technologies, prototype solutions, and validate designs for optimal user experiences

Qualifications

• B.S. or higher in Computer Science, Mathematics, Physics, or equivalent experience
• 5+ years of experience in software development or related fields
• Strong portfolio (e.g., Github) demonstrating past work
• Knowledge of the Software Development Life Cycle, including QA and deployment
• Experience reviewing code and mentoring junior developers
• Strong skills in algorithms, data structures, and coding
• Expertise in Go or C++ in large-scale systems
• Experience with Dockerized Kubernetes on AWS is a plus
• Experience with large-scale data systems like Hadoop, Aerospike, Spark, Kafka
• Ability to take ideas from concept to production, including architecture, development, and testing
• Excellent communication, presentation, interpersonal, and analytical skills

Follow Our Lead

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