Join MosaicDigital and be part of a team redefining what is possible in engineering. We are well-funded with the resources of a scale-up and the speed of a startup. As a Senior Security Engineer, you will have real ownership, meaningful impact, and the flexibility to work how you work best.
What You'll Do:
- Collaborate with product and design teams to define technical requirements
- Design, build, and maintain scalable backend services and APIs
- Participate in on-call rotations and lead incident response efforts
- Improve system reliability, performance, and observability
- Write clean, well-tested, and well-documented code
- Lead code reviews and mentor engineers across the team
What We're Looking For:
- Proven track record of delivering complex, high-impact projects
- 5+ years of relevant professional experience
- Strong system design and architectural thinking
- Ability to drive technical decisions with long-term impact
What We Offer:
- Unlimited PTO and company-wide recharge days
- Company-wide team retreats twice per year
- Parental leave and family-friendly policies
- Flexible hours — we trust you to manage your time
- Health, dental, and vision insurance (or stipend for international hires)
To apply, send your resume and a short note about why you are excited about this role. We review every application and respond within 5 business days.