Work with Third Sphere portfolio companies

Third Sphere
companies
Jobs

Manager, Sales Development

Mark43

Mark43

Sales & Business Development
Remote
Posted on Feb 5, 2026

Mark43 is approved to hire in Canada, the UK, and 36 U.S. states, including Alabama, Arizona, California (excluding San Francisco), Colorado, Connecticut, Washington D.C., Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, North Carolina, Nebraska, New Hampshire, New Jersey, New Mexico, New York, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, and West Virginia. Before applying to a remote role, please ensure that you are able to perform the position in one of the states listed above. State locations and specifics are subject to change as our hiring requirements shift.

Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time.

Mark43’s mission is to empower communities and their governments with technology that improves safety and quality of life. We build powerful, scalable software that sets a new standard for the tools public safety agencies rely on every day. Our users and customers are diverse, and we are committed to fostering diverse perspectives and experiences within our team.

Mark43 is hiring a Manager of Sales Development to lead and scale our Sales Development function supporting the State, Local, and Education (SLED) market. In this role, you will manage a team of Sales Development Representatives (SDRs) responsible for inbound and outbound pipeline generation across public sector accounts.

This is a highly visible player-coach role. In addition to managing and developing the SDR team, you will carry an individual pipeline quota and actively contribute to pipeline creation while helping shape the future of sales development at Mark43.

What You’ll Do

  • If you were part of our team last week, you might have:
  • Led pipeline, activity, and performance reviews with SDRs supporting the SLED market
  • Managed day-to-day execution for the Sales Development team, including prioritization, capacity planning, and goal tracking
  • Carried an individual pipeline quota and contributed directly to outbound and inbound pipeline creation
  • Modeled strong prospecting and qualification practices by actively participating in outreach
  • Provided regular 1:1 coaching to develop skills, confidence, and career progression for SDRs
  • Partnered closely with Marketing to align campaigns, messaging, and targeting for SLED-focused outbound and inbound motions
  • Collaborated with Sales leadership to ensure strong lead handoffs, clear qualification standards, and funnel alignment
  • Built and shared performance reporting in Salesforce and Salesloft to assess effectiveness and identify opportunities for improvement
  • Worked with Sales and Marketing Operations to maintain data quality, optimize workflows, and support scalable processes

What You’ll Need

We’re looking for a player-coach leader with 2–5 years of experience managing or leading Sales Development or Business Development teams in a SaaS or enterprise software environment.

People who thrive in this role typically bring:

  • Demonstrated success leading SDR teams while consistently delivering pipeline results
  • Experience carrying an individual pipeline or revenue-related quota alongside people management responsibilities
  • Strong coaching skills and a track record of developing early-career sales talent
  • Comfort using data and reporting to manage performance and inform decision-making
  • Experience partnering cross-functionally with Marketing, Sales, and Operations
  • Interest in public sector or SLED markets and comfort navigating longer, more complex sales cycles

Preferred Tools & Experience

  • CRM platforms for lead management and pipeline tracking (Salesforce preferred)
  • Sales engagement tools for sequencing and outreach (Salesloft preferred)
  • LinkedIn and other prospecting platforms for research and sourcing
  • Chat or real-time engagement tools for responding to inbound leads
  • Collaboration tools for team communication and coordination

Where You’ll Work

This is a remote role. While we welcome candidates from across the continental U.S. in any of our approved locations.

Why Mark43

At Mark43, you will help build the pipeline engine that supports technology used by state, local, and education agencies across the country. You will work alongside mission-driven teammates who value ownership, transparency, and continuous improvement.

This role offers the opportunity to directly impact growth in the SLED market, mentor emerging sales talent, and contribute meaningfully to a company whose technology supports the people and organizations that keep communities safe.

Our Privacy Notice describes how Mark43 uses and protects the personal information of prospective employees during the recruitment process. It informs you about our handling of the personal information you provide to us when you apply for a position in our organization and in general when you express your interest in joining our team.

As a part of Mark43's security measures all employees must: Engage in appropriate use of the company's electronic information resources; Become knowledgeable about and follow relevant security policies and guidelines; Protect the resources under their control, such as passwords, computers, and data that they create, receive, or download; and Promptly report security-related incidents and violations, and responding to official reports of security incidents involving their systems or accounts.

Mark43 is committed to the full inclusion of all qualified individuals. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information. As part of this commitment, we will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed, please email recruiting@Mark43.com requesting the accommodation.