Senior Fullstack Engineer - AI

Harnham; Houston (TX); Hybrid; USD 140,000 - 210,000; Full time

Job summary

Harnham is seeking a Full Stack AI Engineer to design, develop, and deploy production-grade applications that blend modern software engineering with practical AI capabilities.

You will own solutions across the full stack and collaborate with product, data, and engineering teams to deliver scalable, business-focused AI-enabled features in a hybrid work setting.

Qualifications

• Bachelor's degree in a technical field.
• 8+ years software engineering experience.
• 5+ years hands-on full stack development.
• 2+ years applying AI in software products with practical implementations.
• Strong knowledge of Generative AI, RAG, AI workflows.
• Experience building RESTful APIs and backend services.
• Frontend with React/Angular; backend with Python frameworks.
• Experience in cloud-native apps, preferably GCP.

Responsibilities

• Design and implement end-to-end applications spanning frontend, backend, data, and AI layers.
• Contribute to architecture decisions, technical reviews, and engineering standards.
• Develop scalable, secure, and maintainable systems for enterprise environments.
• Create patterns and frameworks for AI-enabled application development.
• Build dashboards, data-driven solutions, and self-service tools for business users.
• Integrate LLMs, RAG, agents into production applications.
• Evaluate AI tools and platforms; collaborate with data/ML teams.

Skills

Full stack

AI integration

React/Angular

Python backend (FastAPI/Flask/Django)

RESTful APIs

Cloud-native (GCP)

CI/CD

Data pipelines

LLMs/RAG

Communication

Education

Bachelor's degree in Computer Science/Software Engineering/Information Systems

Tools

React/Angular

FastAPI/Flask/Django

GCP

CI/CD tools

Job description

4 days/month on site in Houston or Austin

A fast-growing organisation is seeking an experienced Full Stack AI Engineer to design, develop, and deploy production-grade applications that combine modern software engineering with practical AI capabilities. This role is ideal for a software engineer who has evolved into AI-focused development and has hands-on experience integrating large language models, generative AI solutions, retrieval systems, and intelligent workflows into enterprise applications.

The successful candidate will own solutions across the full technology stack, from user interfaces and APIs to data pipelines and AI-enabled features. You'll work closely with product, data, and engineering stakeholders to deliver scalable, business-focused solutions in a collaborative environment.

• Design and implement end-to-end applications spanning frontend, backend, data, and AI layers.
• Contribute to architecture decisions, technical reviews, and engineering standards.
• Develop scalable, secure, and maintainable systems suitable for enterprise environments.
• Create patterns and frameworks for AI-enabled application development.

Full Stack Development

• Build user-facing web applications, APIs, workflows, and data-driven solutions.
• Translate analytical and AI outputs into intuitive user experiences.
• Develop applications using modern frontend frameworks and Python-based backend technologies.
• Deliver responsive dashboards, data applications, and self-service tools that support business users.
• Implement AI-powered features such as conversational interfaces, semantic search, document processing, and workflow automation.
• Integrate LLMs, retrieval-augmented generation (RAG), agent-based systems, and AI services into production applications.
• Evaluate and select appropriate AI tools, frameworks, and platforms.
• Collaborate with data and machine learning teams to operationalise AI capabilities.

Data & Platform Integration

• Build and maintain data ingestion pipelines and integration workflows.
• Connect applications to data platforms, model endpoints, and enterprise data sources.
• Ensure data quality, reliability, scalability, and performance.
• Support AI memory systems, knowledge retrieval mechanisms, and data synchronisation processes.
• Leverage AI-assisted development tools as part of daily engineering workflows.
• Implement CI/CD pipelines, automated testing, monitoring, and observability practices.
• Participate in code reviews and contribute to engineering best practices.
• Maintain high standards for security, documentation, testing, and software quality.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline.
• 8+ years of professional software engineering experience.
• Minimum 5+ years of hands-on full stack development experience.
• Recent experience applying AI technologies within software products, including at least 2+ years working with practical AI implementations.
• Strong understanding of:
• Generative AI applications
• Agentic systems and AI workflows
• Retrieval-Augmented Generation (RAG)
• Experience building RESTful APIs and backend services.
• Strong frontend development experience using frameworks such as React, Angular, or similar technologies.
• Strong backend development experience using Python frameworks such as FastAPI, Flask, or Django.
• Experience working with cloud-native applications, with a preference for Google Cloud Platform (GCP).
• Experience with data-intensive applications and platform integrations.
• Hands-on use of AI-assisted coding tools within the software development lifecycle.Strong communication, collaboration, and stakeholder engagement skills.
• Experience operating in fast-paced environments with evolving requirements.

Preferred Qualifications

• Experience integrating LLMs, RAG frameworks, AI APIs, and intelligent agents into production environments.
• Experience with modern data platforms, lakehouse architectures, or large-scale data ecosystems.
• Background working in startup, scale-up, or small-to-mid-sized engineering teams.
• Experience with infrastructure-as-code, CI/CD automation, and cloud deployment practices.
• Familiarity with agile software delivery methodologies.
• Experience owning products and systems throughout their full lifecycle.
• Strong product mindset with a focus on usability and business impact.