Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading.

Our Core Exchange team is responsible for all trading interfaces , including the Exchange REST API, FIX API, WebSockets, and market data services. The team’s mission is to deliver a best-in-class trading experience for API users, with a relentless focus on latency, reliability, and data correctness.

As a Staff Software Engineer, you will help scale our trading infrastructure to meet the evolving needs of our most sophisticated users. This is a high-impact role for engineers who love low-latency systems, deeply care about precision, and want to directly shape the tools used by active traders worldwide.

Responsibilities:

• Design and build performant, reliable, and scalable services for our API trading ecosystem.

• Optimize low-latency data flows and trading paths, ensuring correctness under pressure.

• Own and evolve core components of our REST, FIX, and WebSocket APIs.

• Collaborate with product, infrastructure, and frontend teams to deliver seamless API solutions.

• Participate in the team’s on-call rotation, supporting mission-critical systems used by our most active clients.

• Continuously measure, monitor, and improve the trading API experience.

What you bring:

• 10+ years of backend engineering experience.

• Proven experience designing high-performance systems with low-latency and high-throughput requirements.

• Familiarity with cloud infrastructure, especially AWS services.

• Solid database experience: SQL (MySQL) and/or NoSQL (DynamoDB).

• Experience working on or with production-grade trading APIs or high-volume systems.

• Structured thinker with strong communication skills and a customer-first mindset.

Nice to have:

• You’ve built or operated your own automated trading bot or trading system.

• Hands-on experience with the FIX protocol and order management systems.

• Knowledge of WebSockets, streaming market data, or real-time API performance tuning.

• Passion for financial markets and an interest in building tools for professional traders.

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In this role, you will work collaboratively with brokers, exchanges, ECNs, and third-party platforms across all asset classes and regions. You will be responsible for troubleshooting production issues in a Level 3 support environment and have excellent written and verbal communication skills.

To be successful in this role, you will need strong experience in financial markets technology, including Java development, FIX protocol, and Linux development. You will also need a strong understanding of object-oriented programming, networking protocols, and market structure across equities, futures, options, and FX.

The estimated base salary range for this position is $160,000 to $250,000, which is specific to New York and may change in the future. Millennium pays a total compensation package which includes a base salary, discretionary performance bonus, and a comprehensive benefits package.

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The crypto industry is one of the most exciting industries in tech today, and it is constantly changing! At Anchorage Digital, we are building foundational technology to help the crypto industry evolve in a safe, regulated and highly secure manner, which we believe is essential for maximizing the potential of this exciting industry.

We think about growth and career development differently at Anchorage Digital. We define performance as acquiring, possessing, and practicing a relevant set of skills and competencies - and the ability to apply them effectively and consistently.

Responsibilities

• Participate in task breakdown, estimation, design, implementation and maintenance of trading systems
• Use your knowledge of the trading system domain to influence the technical direction of the Brokerage team. Advocate for improved processes or technology when appropriate.
• Dive deep into complex, ambiguous problems, formulate elegant and practical solutions
• Review other developer's code to ensure consistency, reduce errors and share context across the Brokerage engineering team
• Drive iterative system improvement by implementing robust instrumentation and metric collection.

Complexity and Impact of Work

• Able to work either independently or as a lead engineer on a team to deliver features
• Capable of breaking down large projects into smaller tasks, and accurately estimating the time and scope of projects. Articulate effectively the different options considered, analyze trade-offs, justify and recommend priorities.

Organizational Knowledge

• Ensure that knowledge is shared across the team and does not position themselves or others as a single point of failure.
• Collaborate cross-functionally with the Brokerage team and other teams at Anchorage Digital

Communication and Influence

• Mentor and guide multiple engineers on the team within your area of specialization or domain, and help others understand the strategic goals of the Brokerage team and how your work relates to these
• Understands others' context or underlying needs, motivations, emotions or concerns and adjusts communication to ensure maximum impact and effectiveness

Requirements

• 3+ years of professional experience with Go
• Experience with modern software development practices, including automated unit, integration and end to end testing, cloud development, database design and interaction using MySQL or PostgreSQL and experience using Git
• Knowledge of financial asset trading systems and understanding of several (not all) of the following topics: Order Execution Management Systems (OEMS), FIX protocol, market data, low latency application architectures and messaging, matching engines, FX trading, OTC, derivatives, position/risk management, cryptocurrency trading, trading back office systems
• Real world experience building financial trading systems
• Passionate about good software engineering design and implementation practices (e.g. TDD, SOLID, refactoring, etc)
• Genuinely care about code quality and test infrastructure
• Believe software engineering is a team activity and enjoy collaborating every single day, learning from and mentoring others

Bonus Points

• Experience with GraphQL API design and implementation
• Experience with gRPC API design and implementation
• Background in the finance industry
• Experience working with digital asset (i.e. cryptocurrency) trading

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