Senior Lead Software Engineer

As a Senior Lead Software Engineer, you’ll lead a small engineering team delivering solutions that put AI to work in production, customer-facing applications, solving meaningful customer and business problems in a high-scale, regulated environment.

This is a hands-on engineering role. You’ll own technical design and key engineering decisions, contribute directly to implementation, and guide the team from experimentation through secure, reliable production delivery. You’ll work across application, AI integration, and platform layers, building specialized AI agents, MCP servers/tools, and integrations with internal platforms and external vendors.

You’ll also manage and mentor engineers on the team, while keeping your primary focus on engineering execution and technical leadership.

Lead the technical design and delivery of customer-facing applications and specialized AI solutions from concept through production.

Stay deeply hands-on in engineering, contributing to implementation, code reviews, troubleshooting, and technical problem solving.

Build and customize AI agents, including the context, prompts, MCP servers/tools, and integrations required for them to operate effectively.

Design and build scalable services using C#/.NET, AWS, and modern distributed-system architectures.

Work across back-end, AI integration, and platform boundaries, including integrations with internal systems and external vendors.

Lead a small team of engineers through technical direction, mentoring, design discussions, and delivery.

Partner closely with product, engineering, business stakeholders, platform teams, and external partners to understand domain-specific customer problems and turn them into practical technical solutions.

Drive solutions to meet the reliability, security, observability, and operational standards required for high-scale, regulated customer-facing systems.

Be highly proficient with AI-assisted development tools such as Claude and Codex across coding, technical design, analysis, and problem solving.

Bachelor’s degree in Computer Science or a suitable combination of education, experience, and training.

At least 7 years of professional software engineering experience, with strong hands-on expertise in C#/.NET.

Strong hands-on experience with AWS and delivering scalable production solutions in the cloud.

Experience leading engineers and owning technical direction while remaining actively involved in implementation.

Experience working in large, distributed environments where cloud services, internal platforms, and external vendor systems must operate reliably together.

Strong proficiency with AI-assisted development tools such as Claude and Codex.

Interest in, or experience with, building AI agents, MCP tools, and Context Engineering. Deep prior AI-agent expertise is not required if you bring strong software engineering fundamentals and the ability to learn quickly.

Excellent communication, collaboration, and stakeholder-management skills, with the ability to dive deeply into business domains and customer problems.

We’re a publicly traded (NASDAQ: DKNG) technology company headquartered in Boston. As a regulated gaming company, you may be required to obtain a gaming license issued by the appropriate state agency as a condition of employment. Don’t worry, we’ll guide you through the process if this is relevant to your role.

The US base salary range for this full-time position is 160,700.00 USD - 200,900.00 USD, plus bonus, equity, and benefits as applicable. Our ranges are determined by role, level, and location. The compensation information displayed on each job posting reflects the range for new hire pay rates for the position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific pay range and how that was determined during the hiring process. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.