Senior Software Engineer

Who is Nexxen?
Flexible advertising, unified by data. Nexxen empowers advertisers, agencies, publishers and broadcasters around the world to utilize data and advanced TV in the ways that are most meaningful to them. Our flexible and unified technology stack comprises a demand-side platform (“DSP”) and supply-side platform (“SSP”), with the Nexxen Data Platform at its core.

Why join the Nexxen team?
With a global footprint, you can be part of a team that is transforming advertising through our creative, flexible and unified solutions. Employees hustle, commit and dedicate themselves to pillars that make up the Nexxen Way – the 3Cs - Customer Centric, Curious Mindset, Collaborative with No Ego.

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The Senior Software Engineer will join the Nexxen DSP Software Development team as a senior technical contributor and trusted leader on mission-critical, high-throughput services. Our DSP processes billions of real-time transactions a day with strict sub-100ms SLAs while accessing billions of different user profiles in the process, so performance, scalability, and operational excellence will guide every project you take on. You will independently translate ambiguous business problems into simple, robust technical designs, raise the engineering bar through code review and mentorship, and champion the application of the latest technologies—including AI—to solve hard AdTech problems.

We are a hybrid company where our team works 3 days a week in the NY office and remotely the rest of the week.

What You’ll Do:

• Serve as a senior engineer on a talented team building critical, high-performance, large- scale services for Nexxen DSP programmatic integrations and platform products

• Independently transform vague business requirements into simple, well-reasoned technical designs and drive them from concept through production

• Partner closely with the Product team, Engineering Manager, and cross-functional stakeholders to shape requirements, scope, and roadmap

• Take full ownership of complex initiatives end-to-end design, implementation, integration, rollout, and post-launch operation

• Managing read/write access to a data store with billions of records and millions of operations per second

• Write solid, testable, and performant code for services supporting high throughput and low latency (< 70ms response time)

• Set the technical bar through code reviews and pair programming, inspiring mid- and junior-level engineers to write simple, testable, and performant code by example

• Mentor and uplevel teammates; act as a force multiplier for the broader engineering

organization

• Apply an SRE mindset to production deployments—observability, on-call readiness,

incident response, capacity planning, and continuous reliability improvements

• Identify and resolve performance bottlenecks in large-scale distributed systems that

process billions of transactions per day with strict SLAs

• Drive increased test, monitoring, and automation coverage across services, including

automated acceptance testing

• Collaborate on technical design across teams and contribute to architectural decisions

for the DSP platform

• Explore and prototype the application of emerging technologies, especially AI, to solve

technical and AdTech problems

• Operate within Agile / DevOps practices in a fast-paced environment where you can

quickly see the results of your work

• Lead and participate in planning, grooming, and architectural review sessions with the team and stakeholders

What You’ll Bring:

• Expert Java engineer with 7+ years building backend systems at scale

• In-depth knowledge of the JVM ecosystem, including garbage collection, profiling, and

tuning to achieve low latency and high throughput

• Strong grounding in distributed computing—REST APIs, fault tolerance, scalability,

consistency, and resilience

• Strong knowledge of data structures, algorithms, and systems design fundamentals

• Strong SQL/RDBMS skills and hands-on experience with NoSQL distributed databases such as Aerospike, Cassandra, Redis, or KeyDB

• Proven ability to independently turn ambiguous business problems into simple,

pragmatic technical designs

• SRE mindset: you take ownership of what you ship and care deeply about reliability,

observability, and operational excellence in production

• Track record of code review and technical mentorship that raises the bar for mid- and

junior-level developers

• Detail-oriented in business and technical requirements gathering; comfortable

challenging assumptions and clarifying scope

• Strong experience with automated acceptance testing and a test-first mindset

• Hands-on experience with real-time streaming pipelines using Kafka, Kinesis, or similar

technologies

• Strong understanding of operating systems and significant experience working in Linux

environments

• Experience with web/application servers such as Tomcat

• Solid grasp of networking and load balancing techniques

• Production experience with Docker and Kubernetes

• Proficiency with Git and CI/CD pipelines (GitLab CI/CD or equivalent)

• Experience working in Agile / DevOps environments and a strong team-player attitude—

willing to roll up your sleeves and help teammates ship

• Strong verbal and written communication skills, including the ability to articulate complex

technical trade-offs to technical and non-technical audiences

• Strong interest in solving problems in AdTech and a desire to grow into a subject-matter

expert in the space

• Strong interest in applying the latest technology—particularly AI—to technical and

AdTech problems

• Prior AdTech industry experience strongly preferred

• Familiarity with Python or Scala is a plus

In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role in New York is $180,000 - $200,000 at the time of posting. While this is our reasonable expectation this is not a guarantee of compensation or salary, actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, education, certifications, responsibility, and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits including medical, dental, vision, disability insurance, 401(k), EAP, parental leave, discretionary time off, and company-paid holidays.