Senior Solutions Architect Insider Risk (Incydr)

Why Join Us

The interesting work in enterprise security has moved inside the organization. AI agents are creating new insider risk and compliance obligations every day. Data is sprawling faster than the controls around it. At Mimecast our product lines sit where all of that converges.

This is an architecture role reporting directly to an Enterprise Architect (EA). Youll work alongside other Solutions Architects on the team to shape how the product evolves how it integrates with the rest of Mimecast and how it stays ahead of where the market is going.

The Solutions Architect role at Mimecast sits closer to the product problem. Discovery shaping and contract design now drive more of the value than detailed component design. If you primarily want to be a heads-down individual contributor this isnt the right seat. If you want to shape what gets built and own the structural decisions that make a product line move fast with quality it is.

AI-First Architecture at Mimecast

Mimecast is an AI-First engineering organization. We expect this role to use AI development tools daily for design exploration prototyping documentation code review and analysis. This is not optional and it is not bolt-on; it is how we work.

You will also be designing systems that incorporate AI directly. This product line is actively building agent-aware detections and AI-driven enrichment and contributing to Mimecasts broader AI-powered risk products. Comfort designing with and for LLMs agents and modern AI architectures is core to this job not a side interest.

We treat architecture artifacts ADRs files (agent-readable repo context) and data contracts as machine-readable context not documentation. Theyre the substrate that humans and agents both operate inside and they capture the reasoning behind design decisions the why not just the what.

The Opportunity

This is a leadership role shaping the future of Mimecasts Incydr product line. Incydr is our insider risk management and data protection platform. It detects when sensitive data moves in risky ways across endpoints cloud apps email and removable media prioritizes the activity that actually matters and gives security teams the context to investigate and respond before data walks out the door. Were extending that foundation with agent-aware detection and AI-driven investigation so teams keep pace as both the workforce and the threats get more automated.

You will be the connective tissue across product management user experience and engineering to turn real customer problems into effective efficient solutions. Youll help the team deliver value across Mimecasts portfolio so customers can stay ahead of the human and agentic risks they face every day.
We operate with a sense of urgency. Cyber threats dont wait and neither do we. Youll lead teams that move fast make decisions with conviction and deliver results. We expect leaders who thrive in this environment and inspire the same urgency in the teams around you.

What Youll Do

• Shape problems with product partners: Contribute at the problem-framing stage not just after requirements land. Run and facilitate workshops with product managers engineers UX designers and subject matter experts to surface user needs constraints and opportunities. Define what good looks like in customer and business terms before settling on a technical shape.
• Own integration contracts as product artifacts: Help define how the product line touches the rest of the Mimecast platform. Youll own the durable interfaces APIs events and data contracts. Youll also do the coordination work that makes integrations actually land.
• Build the architectural context engineering teams operate inside: ADRs data contracts and service interaction patterns. These are how architecture decisions get propagated and enforced at scale across humans and agents theyre part of the build system not the wiki.
• Set NFR and evaluability targets: Performance availability security cost help define the targets with real numbers. For AI features extend that to eval coverage agent boundary safety and prompt/data-contract stability.
• Coordinate across teams and organizations: A lot of the impact in this role comes from getting the right people in the room gathering stakeholder buy-in and shepherding decisions to closure.
• Engage Enterprise Architecture bidirectionally: Bring cross-product and platform-level decisions to the EA for alignment. Pull EA-level constraints into product shaping early. Push back when standards dont fit your situation with a clear case.
• Estimate and monitor cost and unit economics: Provide cost projections for new architecture work; flag unexpected spend and propose remediation. Reason about cost per outcome per protected user per investigated incident per inference not just AWS spend.
• Wear a technical-architect hat when it adds value: Default mode is solution and product shaping. Drop into detailed technical design when the problem warrants it or when youre unblocking a team and know when to step back out. With agentic engineering practices in place more of the detailed implementation work is carried by engineers with AI assistance.
• Propose technical debt work: Identify and prioritize debt reduction with Product Management partners.

What Youll Bring

• Architecture experience at scale: 8 years building and operating production systems and engaging with product early in the cycle. Time as a Solutions Architect Principal Engineer Tech Lead Product Architect Staff Engineer or equivalent. Comfortable owning architecture across multiple teams.
• Cloud-native depth: Strong working knowledge of AWS (ECS/EKS S3 DynamoDB SQS/SNS IAM VPC) Kafka and the ability to reason about distributed systems at high volume. You dont need deeper AWS internals knowledge than the senior engineers you need to reason about system shape and trade-offs.
• Contract-first integration thinking: A track record of designing clean contracts between systems and teams async messaging event streaming REST/gRPC APIs data contracts and a clear point of view on when to reach for which.
• Product partnership: Comfortable working with PMs on problem definition customer research synthesis jobs-to-be-done framing and outcome hypotheses. You have a point of view on what makes a good product bet not just a good technical bet.
• AI-First working style: You actively use AI development tools day-to-day and have a real opinion on where they help and where they dont. Youre comfortable designing systems that include LLMs agents or related components or youre hungry to get there fast.
• Strong written and verbal communication: Can write a one-page ADR that lands draft a solution brief that holds up under EA review and lead a whiteboard session that produces a decision. Equally comfortable with engineers PMs and designers.
• Stakeholder navigation: Good at building consensus across teams and organizations. Comfortable with ambiguity.
• Self-direction: Driven accountable and able to identify the right problems to work on without being told. The team is small and senior youll be expected to lead not wait for direction.
• Bonus points: Background in security DLP insider risk identity observability or data platforms. Familiarity with agentic AI MCP (Model Context Protocol) or LLM application architecture. Experience with eval design for AI systems product discovery practices or data contract / data mesh approaches (e.g. ODCS).

What We Offer

• Impact: Your architecture decisions will shape one of Mimecasts fastest-evolving product lines and protect data inside thousands of enterprises.
• Voice: Direct working relationship with senior architecture leadership and a real say in technology direction across the product line and beyond as opportunities present themselves.
• Modern stack and modern ways of working: AWS managed services Kafka modern Java and Kotlin services a growing AI tooling footprint and a team that defaults to ship-and-iterate over review-and-gate.
• Senior peers: A small architecture team where everyone is operating at a high level and trust runs deep.

Qualifications

• Bachelors degree in Computer Science or related field or equivalent experience.
• 8 years of professional software engineering and architecture experience with at least 2 years in a Solutions Architect Principal Engineer Tech Lead Product Architect Staff Engineer or similar role with significant product-shaping responsibility.
• Willingness and drive to use AI development tools in a professional setting.

Our Hybrid Model

We provide flexibility through a hybrid working model that champions both collaborative teamwork and individual flexibility. Employees within commuting distance are expected in office at least two days per week because working together in person fosters collaboration drives innovation and builds the kind of relationships that make architecture work easier.

The base salary range for this position is $196000 - $294000 base benefits. This reflects the minimum and maximum target for new hire salaries for this position. This position may also be eligible for incentive plans and other related benefits. Our salary ranges are determined by role level and location. These factors and individual capabilities will also determine the individual pay offered.

This position entails strict adherence to all applicable privacy and security standards and regulations. Responsibilities include the protection of information upholding confidentiality and conducting all activities in alignment with Mimecasts policies. Completion of relevant role-based security and privacy training is a requisite for this role.

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Belonging at Mimecast

Cybersecurity is a community effort. Thats why were committed to building an inclusive diverse community that celebrates and welcomes everyone unless theyre a cybercriminal of course.

Were proud to be an Equal Opportunity and Affirmative Action Employer and wed encourage you to join us whatever your background. We particularly welcome applicants from traditionally underrepresented groups.

We consider everyone equally: your race age religion sexual orientation gender identity ability marital status nationality or any other protected characteristic wont affect your application.

If you require any adjustments or accommodations due to a disability or any other reason that may help you in your interview process please let us know by emailing

Due to certain obligations to our customers an offer of employment will be subject to your successful completion of applicable background checks conducted in accordance with local law.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment.