Senior Full Stack Engineer, Web & Mobile
Called · United States
- Hybrid
- Full-time
- $140,000 / year
- United States
Job highlights
- Build polished, reliable web and mobile experiences.
- Focus on frontend, UX, and mobile usability.
- Own quality from planning to release.
- Utilize AI tools for faster development.
- Join a mission-driven, remote-first team.
About the role
About Us
At Called, we’re building the relational operating system for churches and ministries. Our platform helps ministry leaders know their people, build stronger community, and foster deeper discipleship throughout the week, not just on Sundays. Most churches serve hundreds, if not thousands, of people. Yet very few people in these communities feel truly known. People often drift away not because they reject belief, but because nobody notices they disappeared. We’re a small, high-trust team building meaningful software with modern tools, AI-assisted workflows, and a strong sense of mission. We move fast, care deeply about quality, and believe technology should strengthen human relationships, not replace them. If you want to help rebuild community in a disconnected world through thoughtful software, we’d love to meet you.
About The Role
We are looking for a Senior Full Stack Engineer, Web & Mobile to build polished, reliable experiences across the Called platform. This is a full stack engineering role with a strong emphasis on frontend development, responsive web, mobile usability, React, TypeScript, Capacitor, release quality, and user-facing craft. You should be comfortable working across the stack, but your strongest instincts should be around the user experience: how the interface behaves, how it feels on mobile, how users move through workflows, and how to ship features that are useful, reliable, and easy to use. A major part of this role will be owning the quality of our web and mobile experiences. That includes building responsive interfaces, testing mobile workflows, documenting mobile-specific issues, validating fixes, understanding app store requirements, and helping manage release workflows where applicable. We are especially excited about engineers who are AI-forward and use modern tools to move faster, prototype quickly, debug effectively, improve quality, and reduce repetitive work. This is a senior individual contributor role, not a people-management role or formal technical lead role.
What You'll Do
- Build and improve features using React, TypeScript, React Query, CSS Modules, Python, Django, PostgreSQL, and related tools.
- Create responsive, accessible interfaces that work well across desktop, tablet, and mobile devices.
- Own frontend-heavy features from planning through implementation, QA, release, and iteration.
- Work with backend APIs to fetch, update, validate, and manage application data.
- Contribute to backend services, APIs, data models, and integrations when needed.
- Test mobile and responsive workflows across devices, browsers, screen sizes, and app environments.
- Own QA for mobile issues, including reproduction, documentation, fix verification, and regression prevention.
- Help manage mobile release readiness, including build validation, release checklists, app store awareness, versioning, and post-release validation.
- Improve frontend architecture, component patterns, state management, data fetching, performance, accessibility, and maintainability.
- Use AI-assisted tools for development, debugging, prototyping, documentation, testing, and product iteration.
- Participate in code reviews, technical discussions, testing, and team knowledge-sharing.
Our Engineering Philosophy
We believe modern engineers should be dramatically amplified by AI. Our team actively uses AI-assisted workflows for development, debugging, prototyping, testing, documentation, automation, and rapid product iteration. We care far more about builders who can move fast, learn quickly, and solve problems than developers obsessed with rigid specialization.
We Value
- Ownership over bureaucracy
- Shipping over perfectionism
- Curiosity over ego
- Product thinking over ticket completion
- Mission and craftsmanship equally
What We’re Looking For
- 5+ years of software engineering experience, or equivalent experience building and shipping meaningful production software.
- Strong experience with React, TypeScript, JavaScript, HTML, CSS, and responsive design.
- Experience building high-quality interfaces for desktop, tablet, and mobile users.
- Strong understanding of frontend architecture, component design, state management, data fetching, browser behavior, performance, and accessibility.
- Experience testing and debugging responsive or mobile experiences across devices, browsers, and screen sizes.
- Experience with mobile release workflows, app store deployment, mobile QA, hybrid mobile apps, or app-like web experiences.
- Experience working with APIs and contributing across the stack, ideally with Python, Django, REST APIs, PostgreSQL, or similar technologies.
- Experience using Git in a collaborative development environment.
- Experience using AI-assisted development tools or agentic workflows for coding, debugging, documentation, automation, testing, or productivity.
- Strong attention to detail, clear communication, and a willingness to own quality before release.
- A passion for building technology that supports a mission-driven organization.
People Who Thrive Here
- Senior individual contributors who enjoy ownership without needing a management title
- Full stack engineers whose strongest instincts are frontend, mobile, and user experience
- Builders excited by AI and modern engineering workflows
- Product-minded engineers who think beyond the ticket
- Team players with low ego and high standards
- Engineers who can move across the stack without treating user experience as an afterthought
Bonus Skills
- Experience with Capacitor and hybrid mobile app workflows, including testing, builds, app store submissions, and mobile release management.
- Experience with React Native, Expo, Ionic, Progressive Web Apps, or similar hybrid mobile workflows.
- Experience with mobile-first design, design systems, component libraries, or reusable frontend patterns.
- Familiarity with Docker, AWS, CI/CD pipelines, automated testing, authentication, permissions, or role-based access control.
- Experience building AI-powered product features or internal AI developer workflows.
What You’ll Love About Us
- 100% remote position
- Small team with real ownership and influence
- Fast decision-making and minimal bureaucracy
- AI-forward engineering culture
- Strong work/life boundaries
- Generous PTO and 12 paid holidays
- Company-wide shutdown between Christmas and New Year’s
- Health benefits
- Opportunity for rapid growth and mentorship
- Mission-driven work with real-world impact
Key skills/competency
- Senior Full Stack Engineer
- React
- TypeScript
- Mobile Usability
- Responsive Web Design
- Capacitor
- Release Quality
- User Experience
- AI-assisted Workflows
- Django
Skills & topics
- Senior Full Stack Engineer
- React
- TypeScript
- Web Development
- Mobile Development
- Full Stack
- Software Engineer
- Remote
- Python
- Django
- Capacitor
- AI
How to get hired
- Tailor your resume: Highlight experience with React, TypeScript, and mobile development.
- Showcase AI skills: Emphasize any experience with AI-assisted development tools.
- Demonstrate ownership: Provide examples of owning features from start to finish.
- Prepare for technical questions: Be ready to discuss frontend architecture and mobile workflows.
- Express mission alignment: Articulate your passion for technology in the non-profit sector.
Technical preparation
Behavioral questions
Frequently asked questions
- What are the key technologies for the Senior Full Stack Engineer role at Called?
- The Senior Full Stack Engineer role at Called heavily emphasizes React, TypeScript, and frontend development. You'll also work with Python, Django, PostgreSQL, and potentially Capacitor for mobile applications. Experience with AI-assisted development tools is also highly valued.
- Is this Senior Full Stack Engineer position remote?
- Yes, this is a 100% remote position, offering flexibility and the opportunity to work from anywhere. Called is committed to a remote-first engineering culture.
- What is the career growth potential for a Senior Full Stack Engineer at Called?
- As a senior individual contributor, you'll have significant ownership and influence. The role offers opportunities for rapid growth and mentorship within a small, fast-paced team, focusing on skill development rather than management.
- What does 'relational operating system for churches' mean at Called?
- It means Called is building a platform to help churches and ministries better connect with their members, foster community, and support discipleship. The technology aims to make individuals feel known and reduce the chance of people drifting away unnoticed.
- How does Called leverage AI in its engineering process?
- Called actively uses AI-assisted workflows to amplify engineers. This includes using AI for development, debugging, prototyping, testing, documentation, automation, and rapid product iteration, aiming to increase speed and efficiency.
- What is the company culture like at Called for a Senior Full Stack Engineer?
- Called fosters a high-trust, mission-driven culture that values ownership, shipping quality products, curiosity, and product thinking. They prioritize builders who can move fast, learn quickly, and solve problems, with a strong emphasis on work-life balance and collaboration.
- What are the expectations for mobile development in this role?
- The role has a strong emphasis on mobile usability and responsive web design. You'll be responsible for testing mobile workflows, understanding app store requirements, managing release readiness for mobile apps, and ensuring a great user experience across devices.