Technology and Engineering | Full-time Senior Associate Java Developer New York, United States

Publicis Sapient; New York (NY); On-site; USD 180,000 - 260,000; Full time

Job summary

Publicis Sapient seeks a seasoned Senior Java Developer to design and scale microservices powering real-time execution algorithms. You will ensure ultra-low latency, high availability, and strict risk/regulatory controls in a high-frequency trading environment.

Lead architecture and development of distributed systems, collaborate with quants and product managers, and optimize performance to achieve sub-millisecond execution speeds while adhering to regulatory requirements.

Qualifications

• Deep understanding of the full trade lifecycle and execution algorithms.
• Proven ability to design and scale Java microservices for low latency trading.
• Experience with high-performance messaging and in-memory data stores.
• Strong focus on testing, CI/CD, and production readiness.
• Knowledge of regulatory requirements (MiFID II, SEC Rule 606) is a plus.

Responsibilities

• Architecture & Development: lead distributed microservices using Java/SpringBoot for high-frequency trading.
• Algorithm Engineering: translate execution strategies into production code with performance in mind.
• Performance Optimization: tune GC and memory to sustain sub-millisecond speeds.
• Platform Governance: implement Safe Trading protocols, pre-trade risk checks, and circuit breakers.

Skills

Java concurrency

Java memory model

Multi-threading

High-frequency trading

Performance tuning

Distributed systems

Real-time latency

Algorithm engineering

Tools

Spring Boot

Spring Cloud

Docker

Kubernetes

Istio/Linkerd

Apache Kafka

Solace

Aeron

Redis

Hazelcast

Job description

Job ID: 2026-179652 | 375 Hudson Street New York New York 10014 United States | Full-time

We are seeking a seasoned Senior Java Developer with a deep specialization in high-throughput trading platforms. You will be responsible for designing and scaling microservices that power our real-time execution algorithms, ensuring ultra-low latency, high availability, and strict adherence to risk and regulatory controls.

Core Responsibilities:

• Architecture & Development: Lead the design and implementation of distributed microservices using Java/SpringBoot tailored for high-frequency trading environments.
• Algorithm Engineering: Collaborate with Quants and Product Managers to translate complex execution strategies into performant, production-ready code.
• Performance Optimization: Conduct deep-dive performance tuning, GC optimization, and memory management to maintain sub-millisecond execution speeds.
• Platform Governance: Design and enforce "Safe Trading" protocols, including pre-trade risk checks and automated circuit breakers within the microservices mesh.

Qualifications

Domain Requirements:

• Trading Lifecycle: Deep understanding of the full trade lifecycle (Order Management, Execution, Clearing, and Settlement).
• Execution Algorithms: Proven track record of building or maintaining algorithmic engines and SOR (Smart Order Routing) systems.
• Market Dynamics: Understanding of market data structures (L1/L2/L3 books) and regulatory requirements (MiFID II, SEC Rule 606).

Technical Qualifications:

• Java Expertise: Expert-level proficiency in Core Java (v17+ preferred), including advanced multi-threading, concurrency patterns, and the Java Memory Model.
• Microservices Architecture: Extensive experience with Spring Boot, Spring Cloud, and containerization (Docker/Kubernetes). Familiarity with Service Mesh (Istio/Linkerd) is a plus.
• Messaging & Integration: Hands-on experience with high-performance messaging middleware like Apache Kafka, Solace, or Aeron.
• Data Systems: Proficiency in low-latency data stores (Redis,Hazelcast) and SQL/NoSQL databases for trade persistence and auditing.

Testing & CI/CD: Commitment to TDD/BDD practices and automated pipeline integration (Jenkins, GitLab CI).

Additional Information

As part of our dedication to an inclusive and diverse workforce, Publicis Sapient is committed to Equal Employment Opportunity without regard for race, color, national origin, ethnicity, gender, protected veteran status, disability, sexual orientation, gender identity, or religion. We are also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation due to a disability, you may contact us at [e-mail] or you may call us at [phone].

Company Description

Publicis Sapient is a digital transformation partner helping established organizations get to their future, digitally-enabled state, both in the way they work and the way they serve their customers. We help unlock value through a start-up mindset and modern methods, fusing strategy, consulting and customer experience with agile engineering and problem-solving creativity. United by our core values and our purpose of helping people thrive in the brave pursuit of next, our 20,000+ people in 53 offices around the world combine experience across technology, data sciences, consulting and customer obsession to accelerate our clients’ businesses through designing the products and services their customers truly value.