Java/Kafka Developer

• • • At this time, we are unable to consider candidates requiring visa sponsorship or third-party recruitment agencies for this role. We thank you for your understanding. • • • Java/Kafka Developer Type: Contract (through April 30, 2026 – extension possible) Location: Brooklyn Park, MN – Hybrid/Flex model (approximately 2 days onsite per week) Rate: $40–$60/hr W2 + Benefits About the Business Our client is building a next-generation advertising technology platform that is redefining how value is created in the media industry. Their mission is to transform the digital advertising ecosystem by developing secure, scalable, and data-driven technologies that empower brands and partners. The platform integrates first-party data, brand-safe content environments, and advanced analytics to deliver measurable business results. About the Team The Ad Tech Engineering team partners across multiple disciplines to define and implement the technology strategy behind our advertising systems — including demand-side platforms (DSP), supply-side platforms (SSP), and ad servers. This team is driving a multi-year initiative to create scalable, self-service tools that power end-to-end campaign management, sponsored listings, and innovative digital advertising experiences. Role Overview As a Java/Kafka Developer you’ll lead the design, development, and scaling of complex Ad Tech systems. You’ll leverage your technical expertise to evaluate emerging technologies, guide architectural decisions, and drive innovation across the platform. This role is ideal for a hands-on engineer with deep experience in backend systems, microservices, and distributed architectures. Key Responsibilities • Design and implement scalable, high-performance backend systems for advertising technology applications. • Evaluate and prototype emerging technologies to assess feasibility, maintainability, and long-term value. • Lead design reviews, code reviews, and debugging sessions at the application level. • Drive system architecture discussions and produce clear, comprehensive documentation. • Provide technical mentorship and resolve complex engineering challenges. • Participate in disaster recovery planning and ensure system reliability. • Enforce data quality standards across data acquisition, processing, and storage systems. Required Technical Skills • Expertise in Java/J2EE and REST API development. • Experience building microservices (Spring Boot, mono repos). • Proficiency in Kotlin (preferred). • Database experience with Cassandra, MongoDB, Elasticsearch, or PostgreSQL. • Familiarity with testing frameworks (JUnit, Mockito). • Proficiency in logging and reporting tools (Logstash, Elasticsearch, Kibana, Grafana). • Experience with messaging/event systems (Kafka). • Strong understanding of DevOps practices and CI/CD pipelines. • Excellent communication skills with the ability to present technical concepts clearly. Nice to Have Experience working with Ad Tech platforms (DSP, SSP, or Ad Servers). Hands-on development with Python. Familiarity with data pipeline tools (Oozie or similar). Understanding of advertising metrics, business goals, and campaign performance systems. Benefits: York Solutions Offers a generous benefits package for eligible full-time employees: • BCBS Medical with 3 Plans to choose from (PPO and High deductible PPO plans with Health Savings Program) • Delta Dental plan with 2 free cleanings and insurance discounts • Eye Med Vision with annual check-ups and discounts on lens • Life and Accidental Death Insurance paid by company • John Hancock 401(k) Retirement Plan with discretionary company match • Voluntary Insurance programs such as: Hospital Indemnity, Identity Protection, Legal Insurance, Long Term Care, and Pet Insurance. • Flexible work environment with some remote working opportunities • Strong fun and teamwork environment • Learning, development, and career growth