Top Tech Jobs & Startup Jobs in Chicago, IL

Build, own, deploy, and operate backend services and APIs powering Mozilla products. Responsibilities include backend development, cloud infrastructure collaboration, monitoring and alerting, production support, incident response, releases, security and privacy reviews, API design, code reviews, and mentoring. The role requires end-to-end service ownership, on-call participation, and maintaining reliable production systems.

Build and own backend services for Mozilla’s Ecosystem Services, including server-side logic, APIs, distributed systems, cloud infrastructure, monitoring, deployments, and production reliability. Participate in on-call support, incident response, releases, security and privacy reviews, code reviews, and cross-functional collaboration. Mentor junior engineers and drive improvements in quality, testing, and engineering processes.

Lead iOS development for Thunderbird: design and improve mobile architecture, optimize performance and security, debug and test across unit/integration/automation, review and document technical decisions, own projects end-to-end, and collaborate with product, UX, and open-source contributors to deliver a scalable, accessible, and maintainable iOS app.

Lead design and development of Thunderbird's iOS app, improving architecture, performance, reliability, security, and accessibility. Own projects end-to-end, debug and test at unit/integration/automated levels, review code, mentor contributors, and document technical decisions while collaborating with product, UX, and open-source community.

Manage strategic Firefox Enterprise accounts in France by building customer relationships, driving adoption, overseeing renewals and retention, identifying expansion opportunities, tracking account health, and coordinating internal teams to resolve issues and deliver customer success. The role requires fluent English and French, enterprise SaaS or platform account management experience, negotiation skills, and travel within France.

Lead the finance function across accounting, FP&A, tax, treasury, financial operations, reporting, controls, and revenue recognition. Manage and develop the finance team, oversee budgeting and forecasting, strengthen systems and workflows, support international and partner-led operations, and advise organizational leaders on financial risks and decisions. The role is hands-on and includes oversight of audits, tax obligations, cash management, payroll, investments, and multi-jurisdictional reporting.

Lead the finance function across accounting, FP&A, tax, treasury, reporting, controls, and finance operations. Manage and develop the finance team, oversee revenue recognition and international obligations, strengthen systems and workflows, support budgeting and forecasting, and advise senior leaders on financial risks and decisions. The role also oversees audits, external advisers, cash management, partner arrangements, payroll finance oversight, and reporting to affiliated organizations.

Own strategic enterprise customer relationships across Germany, Austria, and Switzerland. Guide customers from pilot through deployment, adoption, and expansion; monitor account health; lead business reviews; manage renewals, forecasts, risks, and escalations; and coordinate cross-functional teams. The role also identifies support and broader Firefox Enterprise opportunities while maintaining trusted relationships with executive, technical, procurement, and partner stakeholders.

Own the full enterprise sales cycle for Firefox Enterprise across Germany, Austria, and Switzerland. Build pipeline, qualify opportunities, develop business cases, negotiate contracts, and close deals with enterprises, regulated organizations, and public-sector accounts. Partner with business development and solutions engineering teams on market strategy, technical discovery, pilots, and customer rollouts. Engage executive and technical stakeholders while refining Mozilla’s regional sales motion and value propositions around security, resilience, deployment flexibility, and trust.

Supports enterprise sales of Firefox Enterprise across the DACH region by leading technical discovery, solution design, workshops, pilots, proofs of concept, deployment planning, and interoperability validation. Advises customers on enterprise security, identity, endpoint management, policy, certificates, networking, and integration architecture. Creates technical enablement assets, manages technical customer relationships, supports partners, and translates regulatory requirements into deployable solutions.