We are Horizon Stack, a remote-first company building tools used by thousands of teams worldwide. Our engineering team is growing and we need a Senior iOS Developer to help us reach the next level. You will work alongside a senior team with high standards and a strong culture.

What You'll Do:
- Collaborate with product and design teams to define technical requirements
- Improve system reliability, performance, and observability
- Write clean, well-tested, and well-documented code
- Drive architectural decisions aligned with long-term product goals
- Identify and address technical debt to keep the codebase healthy
- Design, build, and maintain scalable backend services and APIs
- Lead code reviews and mentor engineers across the team

What We're Looking For:
- Ability to drive technical decisions with long-term impact
- Proven track record of delivering complex, high-impact projects
- Strong system design and architectural thinking
- Excellent communication and stakeholder management skills

What We Offer:
- Unlimited PTO and company-wide recharge days
- Health, dental, and vision insurance (or stipend for international hires)
- Home office setup stipend ($500-$1,000)
- Company-wide team retreats twice per year
- Fully remote — work from anywhere in the world

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.