Senior Software Engineer – Low LatencyFounded in 2007, DTI (Diversified Technology, Inc.) is a successful African American owned IT Consulting/Staffing firm based in Chicago's Loop. We focus on providing delivery, staffing, and supported services such as enterprise integration/implementations including, but not limited to, CRM, EAM, ERP, PMO, and QA. We service clients in SLED (state/local gov't & education), financial services, fortune, public utility, as well as regularly partnering with Big 4 SI partners.Job Title: Senior Software Engineer – Low LatencyLocation: Chicago, IL (Primary) / New York, NYWork Schedule: Hybrid – 2 days onsite per weekDuration: 6-Month ContractJob DescriptionWe are seeking a Senior Software Engineer – Low Latency to engineer secure, scalable, and reliable technology solutions that support critical business operations and risk management initiatives.
This role requires minimal supervision and focuses on building high-performance, low-latency systems while driving architecture efficiency, code optimization, and system reliability.Key ResponsibilitiesDesign and develop secure, scalable, and reliable technology solutions.Focus on architecture and solution efficiencies while balancing performance, capacity, reliability, and core system functionality.Identify opportunities for code optimization and performance improvements.Participate in code reviews and assist with environment builds, deployments, release notes, and build notices.Proactively identify and mitigate code defects and troubleshoot application issues.Develop optimized application modules and unit tests with minimal guidance.Interpret low-level designs and integrate them into larger application architectures.Communicate and share design ideas using system design tools.Utilize low-level diagnostic tools such as packet captures and hardware performance counters.Tune applications and systems for high throughput and low latency using modern multi-processor architecture concepts.Apply software design patterns and contribute to engineering best practices and process improvements.Required Skills & ExperienceStrong understanding of algorithm analysis and data structure selection based on performance constraints.Expertise in: MultithreadingConcurrent data structuresShared memoryAsynchronous programmingJNI (Java Native Interface)Java NIOHashMap and related collectionsStrong understanding of queue theory and queue implementation strategies.Experience with networking protocols including TCP and UDP.Knowledge of redundancy and fault-tolerance techniques.Strong understanding of JVM internals and garbage collection tuning.Advanced knowledge of Linux OS and Linux kernel internals.Experience tuning applications for high-performance, low-latency environments.Preferred QualificationsExperience with EF_VI, JNI, and Solarflare Onload Extension APIs.Knowledge of: Thread pinningInterrupt handlingCore isolationJitter reduction techniquesNUMA architectureTLB cachesExperience working in ultra-low latency or high-frequency transaction processing environments.Contract Duration: 6 MonthsLocation: Chicago, IL (Primary) or New York, NYWork Arrangement: Hybrid (2 days onsite per week)DTI is an Equal Opportunity Employer. We do not discriminate based on race, color, religion, sex, gender identity, sexual orientation, national origin, ancestry, age, disability, marital status, veteran status, or any other protected characteristic under Illinois state or federal law. All qualified applicants are encouraged to apply, and employment decisions are based solely on merit, qualifications, and business needs.