Senior Frontend Developer

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: TYPE OF WORK

Full Time

: SALARY

TBD

: HOURS PER WEEK

TBD

: DATE UPDATED

Oct 2, 2026

JOB OVERVIEW

Company Overview
Ultra Labs is a U.S.-based business incubator/accelerator that focuses on software/tech-based businesses. We are currently seeking a talented Senior Frontend Engineer to join our team and contribute to the development of cutting-edge solutions across multiple complex business applications.

As a Senior Frontend Engineer, you’ll work on sophisticated enterprise applications including MSP management platforms, educational technology systems, and multi-tenant SaaS applications. This role requires both deep technical expertise and the ability to understand complex business domains.

Development Environment Requirements
Platform Preference (Important)
_Preferred: macOS or Linux developers
_Acceptable: Windows developers with demonstrated WSL2 proficiency
_We operate a BYOD (Bring Your Own Device) contractor model. Our team is primarily Mac/Linux-based, and our development workflows are optimized for Unix-like environments.

Required technical comfort:
_SSH configuration and key management (~/.ssh/config)
_SSH tunneling for secure development and database access
_Advanced Git workflows (rebasing, cherry-picking, complex merge strategies)
_Command-line proficiency and shell scripting
_Environment management across multiple projects

For Windows developers specifically:
_Active WSL2 usage (not just installed) with Ubuntu or similar
_Comfortable working between Windows and Linux environments
_Experience with cross-platform development challenges
_Ability to troubleshoot environment-specific issues independently

Technical Stack Overview
Primary Technologies
_React 17/18 with TypeScript and modern hooks patterns
_Redux Toolkit & RTK Query for state management and API integration
_Ant Design with Styled Components for UI development
_AWS Amplify for authentication and cloud services
_Complex build systems (CRACO, Webpack customization)

Integration Requirements
_AWS Services: Cognito, S3, CloudFront
_Payment Processing: Stripe integration
_Maps & Location: Google Maps API
_Third-party APIs: Various business service integrations
_Database connectivity: Multiple backend systems

Project Complexity Examples
_MSP Platform: 1,168+ TypeScript files, complex business workflows
_Educational Platform: Multi-application monorepo architecture
_Enterprise Features: Role-based access, multi-tenant architecture

Core Responsibilities
Frontend Architecture & Development
_Design and implement scalable React applications with TypeScript
_Build and maintain complex Redux state management systems
_Develop responsive, accessible user interfaces using Ant Design
_Optimize application performance for large datasets and real-time updates
_Collaborate with UX/UI designers to implement pixel-perfect, user-friendly interfaces

Integration & API Development
_Work closely with backend developers on Java and Python FastAPI applications
_Integrate frontend components with server-side logic across multiple tech stacks
_Implement secure authentication flows with AWS Cognito
_Build robust error handling and loading states for API interactions

Business Domain Implementation
_Translate complex business requirements into intuitive user interfaces
_Understand and implement domain-specific workflows (MSP, educational management)
_Build sophisticated forms, tables, and data visualization components
_Ensure cross-browser compatibility and optimize for various devices

Code Quality & Collaboration
_Participate in code reviews and maintain high coding standards
_Write comprehensive unit and integration tests
_Document complex components and architectural decisions
_Mentor junior developers on React best practices and business domain knowledge

Required Qualifications
Core Technical Skills
_5+ years of React development experience with hooks, context, and advanced patterns
_Strong TypeScript proficiency - complex type definitions, generics, utility types
_Redux Toolkit expertise - RTK Query, async thunks, normalized state patterns
_Advanced JavaScript/ES6+ - modern language features and best practices
_CSS/Styling mastery - Styled Components, responsive design, CSS-in-JS

Essential Experience
_3+ years with complex business applications - B2B SaaS, enterprise software
_Component library development - reusable, composable architecture
_State management at scale - large applications, performance optimization
_API integration experience - RESTful APIs, error handling, caching
_Testing frameworks - Jest, React Testing Library, unit/integration testing

Development Environment
_Excellent spoken and written English
_Advanced Git proficiency - complex workflows, conflict resolution
_Build tools experience - Webpack, npm/yarn, modern toolchains
_Unix/Linux command line comfort (or WSL2 for Windows users)
_SSH and network configuration - tunnels, key management, config files

Collaboration & Process
_Agile/Scrum methodology experience
_Strong problem-solving skills and debugging abilities
_Excellent time management and ability to meet deadlines consistently
_Fast-paced environment adaptability
_Open to feedback and continuous learning mindset

Strongly Preferred (Polyglot Mindset)
Multi-Language Experience
We highly value polyglot programmers who demonstrate depth across multiple technologies:
_Backend awareness: Understanding of Java Spring Boot or Python FastAPI
_Scripting capabilities: Python for automation, data processing, or tooling
_Full-stack thinking: Ability to work across the entire application stack
_Technology adaptability: Track record of learning new languages/frameworks

Evidence we look for:
_GitHub/portfolio showing multiple programming languages
_Understanding of language-appropriate design patterns
_Ability to choose the right tool for each task
_Experience bridging frontend/backend communication effectively

Advanced Technical Preferences
_AWS ecosystem experience - Amplify, S3, Lambda, infrastructure knowledge
_Performance optimization - bundle analysis, runtime performance, memory management
_Accessibility expertise - WCAG compliance, screen reader support
_Testing strategy - E2E testing (Cypress), visual regression testing
_DevOps awareness - CI/CD pipelines, deployment strategies

Domain Experience (Nice-to-Have)
_MSP/Service Desk knowledge - ticketing systems, time tracking, invoicing workflows
_Educational technology - registration systems, workshop management
_Multi-tenant architecture - organization-specific customization, role-based access
_Payment processing - Stripe integration, subscription management

Experience Level: Senior (5-7+ years)
_This role requires senior-level expertise due to:
_Codebase complexity - Large, interconnected applications with 1000+ components
_Architecture responsibilities - Making decisions that impact multiple applications
_Business domain complexity - Deep understanding of industry-specific workflows
_Integration challenges - Multiple third-party services and backend systems
_Performance requirements - Optimization for enterprise-scale usage

Success Metrics
Technical Delivery
_Ship complex features on schedule with minimal post-release bugs
_Maintain high code coverage and pass all automated quality checks
_Keep bundle sizes optimized and page load times under target thresholds
_Contribute to architectural decisions that improve long-term maintainability

Business Impact
_Deliver intuitive interfaces for complex business workflows
_Become proficient in domain-specific business processes and terminology
_Collaborate effectively with product managers and stakeholders
_Support the team’s ability to scale and take on larger projects

Team Contribution
_Mentor junior developers and contribute to knowledge sharing
_Participate actively in code reviews and architectural discussions
_Help establish and maintain development best practices
_Contribute to tooling and process improvements

What Makes This Role Unique
Technical Challenges:
_Work with multiple complex codebases simultaneously
_Balance performance, maintainability, and feature velocity
_Design applications that are inherently testable - clear component boundaries, predictable state management
_Implement comprehensive testing strategies - unit, integration, and E2E coverage for business-critical workflows
_Navigate the intersection of frontend excellence and business domain expertise
_Solve integration challenges across diverse technology stacks

Growth Opportunities:
_Gain expertise in multiple business domains (MSP, EdTech, SaaS)
_Work with cutting-edge React patterns and architectural approaches
_Influence technical decisions across multiple product teams
_Develop polyglot skills across our Java and Python backend systems

Impact:
_Your work directly enables business success for our portfolio companies
_Build systems that scale to serve thousands of users across multiple organizations
_Contribute to products that solve real-world business problems in growing industries

Application Instructions:
Please apply directly through OnlineJobs.ph. Applications sent via email will not be considered and will be automatically rejected.

We look forward to hearing from you!

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Senior Frontend Developer

Please login or register as jobseeker to apply for this job.

TYPE OF WORK

SALARY

HOURS PER WEEK

DATE UPDATED

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