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About the Role

Millennium's Information Technology group builds flexible, scalable technology and advanced proprietary systems. Within IT, the Risk Technology team owns the platforms that produce the firm's official VaR, stress, and risk analytics. We are looking for a builder and an owner with an entrepreneurial spirit and a can-do attitude who is ready to step up into leadership. You should think like a front-office technologist, take pride in owning problems end to end, and be eager to drive change and put AI to work across the engineering lifecycle.

Responsibilities

Take responsibility for the design, delivery, and reliability of systems from requirements and design through implementation, deployment, and production support.
Guide the day-to-day work of a team of around three engineers, review code and designs, help teammates ramp up, and foster a culture of ownership and quality.
Design and build well-structured, scalable, low-latency services, make sound technical trade-offs, and uphold engineering standards.
Partner with risk managers, quants, and other technologists to understand requirements, agree priorities, and deliver solutions.
Keep the team focused and accountable, communicate clearly to technical and business audiences, and see work through to completion.
Challenge the status quo, propose better approaches, and adopt AI-assisted development and modern tooling.
Build robust, testable, well-observed Java services and streaming components.
Monitor, troubleshoot, and resolve production issues to protect data integrity and performance.

Requirements

6+ years of professional software development experience.
Strong, recent, hands-on expertise in Java (Core Java, collections, concurrency, JVM fundamentals; Java 17+).
Bachelor’s degree in Computer Science, Engineering, Mathematics, Physics, or a related quantitative discipline.
Some experience leading or mentoring engineers with a genuine appetite to grow into a people-leadership role.
Track record of owning features or components end to end, from design through production.
Solid understanding of object-oriented design, design patterns, and multithreaded/distributed systems.
Experience building scalable, reliable services.
Exposure to event-streaming pipelines (e.g., Kafka) valued.
Good stakeholder and communication skills, with the confidence to engage directly with a demanding front-office audience.
Relational SQL database development experience (e.g., Postgres, SQL Server).
Comfort on the Unix/Linux command line.
Familiarity with CI/CD (Jenkins), Git, and modern DevOps practices.
An entrepreneurial, can-do mindset — comfortable with ambiguity, biased toward action, and eager to invent and improve.
Desirable: front-end experience (TypeScript/JavaScript, Angular).
Desirable: understanding of financial instruments and risk concepts (VaR, stress, sensitivities), with exposure to equities, credit, rates, or derivatives.
Desirable: cloud experience (AWS: EC2, S3, Aurora, Redshift, etc.).
Desirable: hands-on use of AI-assisted development tools.

Skills

Java
Core Java
Collections
Concurrency
JVM fundamentals
Java 17+
Object-oriented design
Design patterns
Multithreaded systems
Distributed systems
Event-streaming pipelines
Kafka
SQL
Postgres
SQL Server
Unix/Linux command line
CI/CD
Jenkins
Git
DevOps practices
TypeScript
JavaScript
Angular
Financial instruments
Risk concepts
VaR
Stress testing
Sensitivities
Equities
Credit
Rates
Derivatives
AWS
EC2
S3
Aurora
Redshift
AI-assisted development

Location

New York

Work Type

Full-time

Experience Level

Senior
6+ years of professional software development experience
Some experience leading or mentoring engineers

Education Level

Bachelor’s degree in Computer Science, Engineering, Mathematics, Physics, or a related quantitative discipline.

Salary/Compensations

$175,000 to $250,000

Benefits

Discretionary performance bonus
Comprehensive benefits

About the Company

Millennium is a global, diversified alternative investment firm, founded in 1989.
Millennium's mission is to deliver results for our investors.
Our people are empowered with both independence and support: the autonomy to pursue ideas with conviction and the backing of a global network committed to collaboration, disciplined risk management and continuous learning.
With opportunities to deepen expertise and accelerate development, talent at Millennium is equipped to adapt, evolve and build lasting impact over time.
Discover how transformative growth accelerates impact.