Impact at Scale: Your work powers millions of conversations across industries. From real estate to smart cities, healthcare to IT support- what you build reaches businesses and communities globally.
Cutting-Edge AI: Work with state-of-the-art voice AI technology. We're building Neuron 1.0 with sub-176ms response times, multilingual natural language processing, and autonomous workflow execution.
Real Problems, Real Solutions: No vanity projects. Every feature we build solves actual customer challenges. You'll see the direct impact of your work in production environments serving thousands of users daily.
Growth & Learning: We're scaling rapidly—from startup to enterprise platform. Grow with us. Learn from challenges that most engineers never face in their careers.
Remote-First Culture Work from anywhere We're a fully distributed team across multiple time zones. Work from home, a coworking space, or a beach in Bali. Results matter, not location.
Competitive Compensation Salary + equity Fair market salaries with equity participation. As we grow, you grow. We believe everyone should share in the company's success.
Work-life balance Flexible working hours. We trust you to manage your time. Focus on output, not hours logged. Take time off when you need it.
Health & Wellness Comprehensive benefits Health insurance, mental health support, wellness stipends, and home office setup budget for international team members.
Learning Budget Continuous development Annual learning budget for courses, conferences, books, and certifications. We invest in your growth.
Cutting-Edge Tools Best-in-class stack Latest hardware, premium software subscriptions, AI development tools. We don't cut corners on the tools you need to succeed.
Environmental Impact Green commitment Every conversation minute contributes to our tree planting initiative. Be part of a company that takes environmental responsibility seriously.
Innovation First We move fast, experiment boldly, and aren't afraid to fail. The best idea wins, regardless of who suggests it.
Transparency & Trust Open communication, honest feedback, clear goals. We share company metrics, challenges, and wins with the entire team.
Customer Obsession Our customers' success is our success. Every decision starts with understanding customer needs and delivering value.
Diversity & Inclusion We're building a global product for global customers. We value diverse perspectives, backgrounds, and experiences
Sustainability Mindset From our green commitment to paperless operations, we consider environmental impact in everything we do.
Senior Backend Engineer (Python/Node.js) Remote • Full-time Build scalable voice AI infrastructure handling millions of conversation minutes. Work with async workflows, real-time processing, and distributed systems.
5+ years backend development experience
Strong Python or Node.js expertise
Experience with microservices, message queues, WebSockets
Bonus: Voice/audio processing, Twilio, telephony systems
Full-time Develop and optimize our Neuron 1.0 voice engine. Work on natural language understanding, speech recognition, response generation, and latency optimization.
3+ years ML/AI experience
Strong Python, PyTorch or TensorFlow
Experience with LLMs, speech-to-text, text-to-speech
Bonus: Real-time systems, voice conversation design
Full-time Own our infrastructure, CI/CD pipelines, monitoring, and reliability. Ensure 99.9% uptime across global deployments.
4+ years DevOps/SRE experience
Strong AWS/GCP/Azure, Kubernetes, Docker
Infrastructure as code (Terraform, CloudFormation)
Bonus: Multi-region deployments, carrier-grade systems
Full-time Build beautiful, performant dashboards and customer-facing applications. Own the entire frontend experience from design to deployment.
4+ years frontend development experience
Expert React, Next.js, TypeScript
Strong UI/UX sensibility, accessibility knowledge
Bonus: Real-time data visualization, voice UI design
Full-time Define product strategy, roadmap, and feature priorities. Work directly with customers to understand needs and translate them into technical requirements.
3+ years product management experience
Strong technical background (engineering or CS degree preferred)
Experience with B2B SaaS, API products
Bonus: Voice AI, conversational design, telephony
Full-time Design intuitive interfaces for complex AI voice systems. Create user experiences that make powerful technology accessible to everyone.
3+ years UI/UX design experience
Portfolio demonstrating B2B SaaS work
Proficiency in Figma, design systems
Bonus: Voice interface design, accessibility expertise
Full-time Drive enterprise sales, build relationships with Fortune 500 companies, and close six-figure deals. Own the full sales cycle from prospecting to contract signature.
5+ years enterprise B2B sales experience
Proven track record of $500K+ annual quota achievement
Experience selling technical products (AI/SaaS preferred)
Excellent communication and negotiation skills
Full-time Drive enterprise sales, build relationships with Fortune 500 companies, and close six-figure deals. Own the full sales cycle from prospecting to contract signature.
3+ years customer success experience in B2B SaaS
Technical aptitude, ability to understand complex products
Strong communication and relationship-building skills
Bonus: Experience with AI products, enterprise accounts
Full-time Manage financial operations, budgeting, reporting, vendor relationships. Support business operations and strategic planning.
4+ years finance/operations experience
Strong analytical skills, financial modeling
Experience with startup or high-growth environments
Bonus: International business experience, fluent Italian
We're always looking for exceptional talent. If you're passionate about conversational AI and believe you can contribute to our mission, we'd love to hear from you.
Our hiring process is designed to be respectful of your time while giving us confidence you're the right fit.
01
Application Review: 15-30 minutes Submit your application with resume/portfolio. We review every application personally and respond within 5 business days.
02
Initial Screen: 30 minutes Quick video call with our recruiting team to discuss your background, the role, and answer initial questions.
03
Technical/Skills Assessment: Varies by role For engineering roles: coding challenge or take-home project. For other roles: case study, portfolio review, or role-specific exercise.
04
Team Interviews: 2-3 hours total Meet potential teammates and leadership. We typically schedule 2-3 conversations covering technical skills, culture fit, and role-specific deep dives.
05
Final Decision: 2-3 days We move quickly. You'll hear our decision within 2-3 days after final interviews. If it's a yes, we'll extend an offer immediately.
Total Timeline: 2-3 weeks from application to offer
Backend Engineer
"Working at Callin.io means solving problems that actually matter. Every feature we ship impacts thousands of real conversations. That's incredibly motivating."
ML Engineer
"The autonomy is refreshing. I'm trusted to make decisions, experiment, and own my work. Leadership removes blockers instead of creating them."
Product Designer
"I've learned more in 6 months here than in 2 years at my previous company. The pace is fast, but the growth is exponential."
Remote-First, Human-Centered
01
Async Communication: We respect time zones and deep work. Most communication happens asynchronously via Slack, Notion, and Loom videos.
02
Regular Sync Points: Weekly team syncs, monthly all-hands, quarterly planning sessions. Stay connected without constant meetings.
03
In-Person Gatherings: Annual team retreat to connect, collaborate, and celebrate wins.
04
Growth Opportunities: As we scale, internal mobility is encouraged. Interested in product? Want to lead a team? We support career growth in multiple directions.
05
Mental Health Support: Flexible PTO, mental health days, wellness stipends, and access to therapy/counseling services.
💻 Premium Equipment - MacBook Pro or equivalent, external monitors, ergonomic setup budget
🏥 Health Insurance - Comprehensive health coverage (varies by country)
📚 Learning Budget - $2,000/year for courses, conferences, books, certifications
🌴 Flexible PTO - Unlimited vacation policy (minimum 20 days encouraged)
💰 Competitive Salary - Market-rate compensation based on experience and location
📈 Equity - Stock options for all full-time employees
🌍 Work From Anywhere - Fully remote, work from anywhere in compatible time zones
🌱 Environmental Impact - Your work contributes to tree planting and carbon offset
🏢 Co-working Stipend - Monthly budget for co-working space membership
📞 Communication Tools - Slack Premium, Zoom, Notion, GitHub, premium software
☕ Office Stipend - Monthly budget for coffee, snacks, home office expenses
✈️ Annual Retreat - Fully-paid team gathering at exciting global locations
