Ontrac Solutions LLC

You would design and build multi-agent applications, their web interfaces and backend APIs, deploy and operate them on GCP, and maintain agent evaluation, testing, and observability workflows. | The role requires senior full-stack experience, production GCP deployment, hands-on Google ADK multi-agent development, and expertise in agent evaluation, Gemini, authentication, and CI/CD; the resume supports the web, API, and systems background but not the central GCP and ADK requirements. | OVERVIEW We are seeking a senior full stack software engineer to join our contractor program supporting a customer engagement that builds applications around multi-agent systems developed with Google's Agent Development Kit (ADK) on Google Cloud Platform. This role is ideal for an engineer who can build the whole application: the agents, the backend services and APIs behind them, and the web interface that users work in. The candidate should have built agents with ADK, deployed them to production on GCP, and operated them afterward, including the evaluation and feedback loops that keep agent behavior reliable over time. The successful candidate will use AI coding tools, with several agents running at once, as a standard part of daily engineering practice. This engineer will work closely with our technical lead, other engineers, and customer stakeholders to ensure project success from initial definition through final delivery. REQUIRED CREDENTIALS • Professional full stack software engineering experience, including production delivery on Google Cloud Platform • Hands-on experience building and deploying AI agents with Google's Agent Development Kit (ADK) • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • ADK agent development, including agent definitions, tool design, and session and state management • Design and implementation of multi-agent systems, including delegation between agents, sequential, parallel, and loop workflows, and clear boundaries for each agent's context and responsibility • Feedback loops for agent quality: evaluation sets, automated scoring of agent output, tracing, and using the results to revise prompts, tools, and agent structure • Frontend development with TypeScript and a modern component framework, including integrating a UI with agent and REST APIs, streaming responses, and authenticated sessions • Backend service and API development, including relational database design (for example PostgreSQL) with versioned schema migrations • Authentication and authorization for web applications and agent tool calls, using OAuth 2.0 / OIDC and JWT • Deployment and operation of agents and application services on GCP using Cloud Run and Agent Engine • Gemini models on Vertex AI, including prompt design, function calling, and structured output • Tool integration for agents over MCP and REST APIs • Daily use of Claude and other AI coding assistants for design, implementation, testing, and review, including running multiple agents concurrently, with the judgment to verify and correct generated output • Automated testing and CI/CD across the stack, including frontend and end-to-end tests and regression evaluation of agent behavior USEFUL QUALIFICATIONS • Agent-to-Agent (A2A) protocol • Retrieval and grounding with Vertex AI Search or vector search • Observability for agents and services with Cloud Trace, Cloud Logging, and OpenTelemetry • Pub/Sub, Memorystore, and BigQuery • Integration of agents with Gemini Enterprise • Google Cloud Professional certifications SCOPE OF WORK • Design the multi-agent architecture for the solution, including agent roles, delegation, tool boundaries, and state handling • Implement agents and tools with ADK, including integrations with customer and third-party systems over REST and MCP • Build the web frontend and the backend services that expose the agents to users, including the user workflows and the APIs they run against • Deploy agents and application services to GCP on Cloud Run and Agent Engine, with CI/CD and managed environments and releases • Build and maintain evaluation suites and feedback loops that measure agent output, surface regressions, and drive changes to prompts, tools, and agent structure • Instrument agents and services with tracing and logging so that behavior in production can be inspected and debugged • Use Claude and multi-agent workflows to accelerate design, implementation, test generation, and code review across the full stack, with the engineer remaining accountable for the correctness of all delivered code • Deliver unit, integration, end-to-end, and agent evaluation test coverage, participate in code reviews, and document the architecture and operating procedures for our team and the customer's

Develop and maintain an offline-first React Native mobile application with secure authentication and device hardware integration for a government platform. | 7+ years software engineering including 3+ years React Native, shipped production mobile apps, strong TypeScript and native iOS/Android skills, offline-first architecture, and secure authentication. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

Develop and maintain offline-first React Native mobile applications with secure authentication and hardware integration for a government platform. | 7+ years software engineering experience including 3+ years React Native, mobile app deployment, and expertise with native iOS/Android layers. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

Develop and maintain offline-first React Native mobile applications with secure authentication and device hardware integration for a government compliance platform. | 7+ years software engineering including 3+ years React Native, experience shipping production mobile apps, and proficiency with native iOS/Android tooling. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

Develop and maintain an offline-first React Native mobile application with secure authentication and hardware integration. | 7+ years software engineering with 3+ years React Native, mobile hardware integration, offline-first architecture, and secure authentication. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

Develop and maintain an offline-first React Native mobile application with secure authentication and hardware integrations for a government platform. | 7+ years software engineering with 3+ years React Native, experience shipping production mobile apps, and skills in native iOS/Android development and offline-first architectures. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

Develop and maintain offline-first React Native mobile applications with secure authentication and device hardware integration. | 7+ years software engineering including 3+ years React Native, production mobile app experience, and strong skills in mobile testing and native iOS/Android development. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms

Develop and maintain an offline-first React Native mobile application with secure authentication and hardware integration for government compliance. | 7+ years software engineering with 3+ years React Native, experience shipping mobile apps, and skills in native iOS/Android development, offline storage, and secure authentication. | OVERVIEW We are seeking a highly skilled and experienced Senior Software Engineer (Mobile) to join a contractor program supporting a critical customer engagement: a state government professional licensing and regulatory compliance platform built on Google Cloud. This role is ideal for a senior mobile engineer who has shipped offline-first React Native applications to production on iOS and Android and can own a feature area end to end with minimal supervision. The successful candidate will work closely with the client technical lead, the backend engineering team, and customer stakeholders to ensure project success from initial definition through final delivery. Expected start date: 5 October 2026. REQUIRED CREDENTIALS • 7+ years of professional software engineering experience, including 3+ years with React Native • At least one production application shipped to the Apple App Store or Google Play, or through enterprise distribution • Bachelor's degree in Computer Science or equivalent practical experience REQUIRED QUALIFICATIONS • React Native and TypeScript, including the Expo toolchain • Comfortable working in the native iOS and Android layers (Xcode, Android Studio) to integrate, configure, and debug native modules • Offline-first architecture: local SQLite storage, encryption at rest, and data synchronization • Device hardware integration: camera, barcode/QR scanning, signature capture, GPS • Authentication with OIDC/OAuth 2.0 (Okta or comparable) and secure token storage • REST API integration against backend services • Mobile testing with Jest and an E2E framework such as Detox or Maestro USEFUL QUALIFICATIONS • Enterprise tablet deployment and mobile device management • Familiarity with Google Cloud Platform services • Experience in government or regulated environments • Mobile accessibility (WCAG 2.1 AA) • Mobile CI/CD (EAS, Fastlane, GitHub Actions) SCOPE AND SOLUTION EXPECTATIONS Below covers the scope of work we anticipate the contractor supporting throughout the project timeline. • Build the offline-first field inspection tablet application on React Native / Expo for iPadOS and Android enterprise tablets • Implement encrypted local storage for inspection checklists, violation records, and draft reports • Implement barcode/QR credential scanning and digital stylus signature capture • Implement photo evidence capture with timestamping and geotagging • Build the background data synchronization engine between device and backend • Integrate Okta authentication and secure session handling for field-deployed devices • Deliver unit and E2E test coverage, participate in code reviews, and maintain the build and distribution pipeline for both platforms