RainFocus

Senior Full Stack Developer

United States

Remote

Full Time

#Research

#Technology

#Java

#React

#Integrations

#SQL

#Agile Development

#Spring Framework

#API Integration

#MLOps

#Data Engineering

RainFocus is looking for a Senior Full Stack Developer

Full Time Senior Remote United States Research Technology Java React Integrations SQL Agile Development Spring Framework API Integration MLOps Data Engineering English 401k Paid time off Remote work

RainFocus, one of the most innovative software companies in the heart of Utah's Silicon Slopes, is in search of an exceptional Sr. Full Stack Developer (AI Focus).

About RainFocus

We work with global brands like Adobe, Cisco, IBM, Oracle, and VMware to power in-person, virtual, and hybrid events across the globe. Our platform helps teams streamline operations, personalize attendee experiences, and turn event engagement into real marketing results. We’re well-funded, growing quickly, and building something that’s reshaping the industry. The work is challenging, the impact is real, and the team is full of curious, driven people who care about doing things right.

About the Role

RainFocus is looking for a seasoned Full Stack Developer to help us build the next generation of tools that power some of the largest events in the world. You’ll be joining a fast-moving, cross-functional team focused on delivering smarter, AI-powered experiences for our internal teams and event organizers.

As a Senior Full Stack Developer, you will architect and develop enterprise-grade web applications using Java and React. You’ll also take an active role in leading by example, and helping shape the future of our technical direction. We need collaborative, energetic team members who are capable of becoming experts in RainFocus products, industry best practices and who work well within small, focused teams.

This role sits at the heart of some of our most ambitious work: blending AI with intuitive product design to streamline complex configuration tasks and enable more personalized experiences. You’ll work closely across-functions to turn AI ideas into working solutions.

We’re looking for someone who’s collaborative, curious, and ready to build things that don’t exist yet.

Responsibilities:

Develop and maintain our core product set with a focus on usability, security, and scalability

Contribute to the design and implementation of our AI agent platform, including LLM integrations and supporting infrastructure

Collaborate closely with Product Management and UX to build thoughtful, client-facing experiences

Build and iterate on advanced prototypes that integrate LLMs, APIs, and retrieval pipelines

Implement full-stack features—from database schema and backend services to frontend components and real-time user interactions

Qualifications:

Have a strong technical background, including 5+ years of experience working on full stack code bases and doing anything it takes to solve problems and delight users.

Experience working with LLMs, AI agents, or RAG architectures

Experience architecting complex solutions, then projecting your vision and thought process to other developers

Experience peer reviewing code while providing feedback and improvements

Very strong written and verbal communication skills

Experience with Agile Software Development methodologies

Experience in Object-Oriented design and programming.

Experience in RDBMS (MySQL, Oracle, MSSQL, etc.) including database design and advanced SQL

Experience with front-end development using a modern JavaScript framework such as React, Angular, or Vue.

Strong interest in development platforms, Data Engineering, MLOps, AI, CI/CD, infrastructure or making products for technical teams

Able to make effective trade-offs in regards to both engineering and product requirements, while balancing short term and long term needs

Strong expertise with backend systems in service-oriented architectures

Preferred Skills:

Familiarity with LangChain, LlamaIndex, or other AI frameworks

Experience driving zero-to-one development of key technical capabilities

Strong problem-solver who can untangle complex systems, find the root cause, and fix issues without duct tape solutions.

Creative thinker who spots opportunities for smarter solutions and isn’t afraid to pitch bold ideas that actually move the needle.

Comfort working with vector databases (e.g., Pinecone, Weaviate, FAISS)

Experience with Struts2 MVC, Spring Framework

Experience integrating with 3rd party systems via APIs

Prior experience as a team lead

Personal Characteristics:

The best candidates for this position will thrive at RainFocus not just because of their technical skills, but because of how they show up. They’re energized by solving hard problems, working with smart teammates, and figuring things out without a step-by-step manual.

They’ll need to be comfortable in a fast-paced, evolving environment where priorities shift and curiosity is rewarded.

We’re looking for someone who is:A strong communicator who keeps others in the loop and asks great questions

Self-motivated, with a bias toward action and ownership

A collaborative team player who helps others level up

Naturally curious—driven to understand how things work and how to make them better

Comfortable with ambiguity and unafraid to make decisions when things are messy

Location:

This remote role can be located anywhere in the United States. Travel may be required.

Why work at RainFocus?

At RainFocus we delight millions of attendees at large-scale events by delivering better insights, experiences, and marketing.

As a member of the RainFocus team, you will have the opportunity to experience first-hand the impact of our platform at events around the world. Additionally, RainFocus offers competitive salaries, competitive benefits, 401k and generous PTO.

What are you waiting for? Apply today! We need more talented, hard-working, fun-loving team members just like yourself!

RainFocus

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Senior Full Stack Developer at RainFocus