Jobs at Antithesis

Legal Counsel will support vendor and customer contracting, lead privacy and compliance work, advise international subsidiaries, draft internal policies, and provide practical corporate legal guidance. The role partners closely with sales, finance, and business stakeholders, negotiates SaaS and commercial agreements, manages outside counsel, and develops repeatable legal templates, playbooks, and approval processes. Candidates need a U.S. law degree, active bar membership, substantial commercial contracting and privacy experience, and Virginia bar admission or eligibility.

Lead and scale customer operations across pre-sales, onboarding, customer success, support, renewals, and account management. Own processes, tooling, analytics, forecasting, customer health, and lifecycle programs. Partner with Sales, Product, Engineering, Finance, and execs to drive retention, operational efficiency, and scalable growth. Build and mentor teams, improve systems and reporting, and establish renewal and escalation processes for a high-growth SaaS business.

Researches target companies, prospects through multichannel outreach, crafts technical messaging for engineering leaders, qualifies leads, and books meetings, demos, and proof-of-concept discussions. Collaborates with Account Executives, Marketing, and Revenue Operations on campaigns and events while learning the company’s distributed-systems testing platform and industry trends.

Generate and qualify leads through multi-channel prospecting, technical messaging, event engagement, and sales campaigns. Research target companies, assess technical and business fit, communicate platform value to engineering leaders, and collaborate with Account Executives, Marketing, and RevOps to book qualified meetings and demos. Maintain knowledge of distributed systems, testing, and reliability trends.

Own the full enterprise sales cycle for Antithesis’s software verification platform, from prospecting and qualification through technical evaluation, negotiation, and close. Build pipeline across software engineering organizations and executive stakeholders, partner with Solutions Engineering and BDRs, guide demonstrations and proofs of concept, maintain forecasts, and provide market feedback. Help shape sales processes, messaging, qualification, and customer growth in an early-stage environment.

Build and improve Antithesis’s reactive Notebook platform, including its JavaScript execution engine, frontend, data layer, APIs, and custom database. Own features end to end, collaborate with product managers on design and scope, create property-based tests and reliability workloads, and develop build and deployment logic using Nix. The role requires strong TypeScript and software engineering skills, with some Rust development and knowledge of web technologies, browsers, algorithms, and data structures.

Build and operate AI-native, full-stack products for sales, marketing, and revenue operations teams. Develop agent workflows, automations, integrations, and production applications for research, enrichment, account scoring, and other go-to-market needs. Collaborate with nontechnical users to understand workflows, test solutions, and improve products. Integrate systems such as Salesforce, Marketo, and Gong while making pragmatic build-versus-buy decisions.

Own the accounting systems and operational infrastructure, including ERP administration, integrations, data integrity, workflows, controls, automation, close support, and audit readiness. Partner cross-functionally to implement tools, improve processes, resolve bottlenecks, and scale the finance function efficiently.

Own month-end and year-end close activities, journal entries, account reconciliations, financial statements, and supporting schedules. Apply GAAP and ASC 606 revenue recognition for a SaaS business, support internal controls and accounting policies, coordinate audits, assist with tax compliance, and improve close efficiency and accuracy.

Own the end-to-end billing and accounts receivable function, including invoicing, collections, dispute resolution, aging management, reporting, billing system configuration, controls, and workflow automation. Partner with sales and legal on contract terms, maintain accurate AR data, improve processes, and support audit readiness as the SaaS company scales.

Antithesis seeks a Senior to Staff Engineer for building autonomous testing tools, focusing on Rust development, property-based testing, and web technologies.

The Senior Software Engineer will develop tools and solve open-ended problems using various programming languages and technologies. The role requires collaboration in a multidisciplinary team environment with a focus on engineering competency.

The Engineering Manager will lead and mentor a team of engineers, drive execution on projects, contribute to code, and improve engineering standards while aligning with company goals.

Run complex enterprise sales cycles from prospecting through close, manage a book of business, engage technical and executive stakeholders, drive customer adoption, refine sales processes, represent customer needs in product discussions, mentor Account Executives, and partner with marketing. The role requires enterprise B2B SaaS sales experience, preferably selling developer tools or similarly technical products, strong quota performance, technical acumen, and startup adaptability.

Leads a regional Solutions Engineering team supporting presales activities, proof-of-concept execution, customer engagements, recruiting, onboarding, performance management, and technical enablement. Partners with sales, marketing, recruiting, and global go-to-market teams while mentoring engineers and contributing hands-on technical expertise to customer engagements and distributed-systems testing initiatives.

Design, build, and operate core platform systems including storage layers, data pipelines, and scalable APIs. Contribute to the Pangolin database, implement data access and authorization primitives, own reliability and on-call duties, identify and resolve performance bottlenecks, and mentor engineers.

Design, build, and evolve Pangolin, a bespoke streaming analytics database handling terabytes daily. Collaborate with internal customers and the infrastructure team to prioritize features, improve performance and reliability, write design docs, and drive the long-term technical direction of the system.

The Senior Account Executive will manage enterprise sales cycles, engage with technical customers, mentor new executives, and refine sales processes.

The Senior Account Executive will manage enterprise sales, engage technical and business discussions with stakeholders, drive customer adoption, and mentor new sales staff.

As a Solutions Engineer, you will demonstrate product value, support onboarding, conduct workshops, find bugs in software, and provide customer guidance.