Java Backend Developer

Company: Gracia AI
Employment type: FULL_TIME

At Gracia, we are proud to be the first in the world to create photorealistic volumetric videos based on Gaussian Splatting (4DGS), and for 2.5 years, we have been successfully building infrastructure for their production and distribution. 4DGS is a new type of content where video can be rendered from any point in space within it.

This is not our first startup; we are building this project with an experienced team consisting of ex-Prisma AI (150M downloads on the App Store, #1 AI avatars in 2022) and ex-Netmonet (exit in 2021, capitalization of several billion rubles). We are building this company for ourselves — designing it to be a full-fledged business for real users, not just for sale to Big Tech.

How does it work? A scene is captured simultaneously from different angles using ordinary cameras. Synchronized videos from the cameras are converted by our technology and pipeline into a photorealistic and dynamic 3D scene. Then, this scene is rendered in real-time on the device, and the user gets the ability to watch the video from any point in space at any time, meaning they can walk inside the video, and the image is recalculated instantly without delay.

Over the past 3 years, the technology has already proven that it will unequivocally change not only the look of VR/AR content but also the structure of virtual production for films, as well as how immersive replays will be produced for sports broadcasting.

Our target industries:

• XR education (medical, fitness, blue color)
• Sports broadcasting
• Virtual production
• XR entertainment (music videos/concerts, fashion)

What we have achieved in 2.5 years:

• First in the world to launch real-time rendering of 4DGS content on low-end GPU standalone devices (Quest 3/3S + Pico 4U, Apple VisionPro, iPhone, Android)
• Proven PMF (product market fit) with paying users
• Confidently crossed the $2M ARR mark
• Raised $3.5M from international funds
• Built a partner network of volumetric capturing studios in the US, UK, Europe, Canada, Japan
• Grown to 30 people

We are now looking for a Java Backend Developer — a person who will help us build reliable, scalable, and performant backend services for a product that is already used by clients worldwide.

What you will do

• Design and develop new backend features, including REST API and core business logic
• Integrate the platform with external services: payment providers, analytical systems, marketing tools, and other third-party services
• Work closely with product and analytical teams to support a data-driven approach, experiments, and A/B testing
• Monitor, debug, and optimize service performance and reliability using Grafana and Prometheus
• Participate in improving CI/CD processes and cloud-native infrastructure running on Kubernetes

What is important to us

• 3+ years of professional experience in backend development with Java
• High level of independence, ownership, and the ability to proactively solve problems without micromanagement
• English language proficiency at the Intermediate level or higher
• Solid experience with:
  • Java 11+ and Spring Boot (Web, Security, Data JPA)
  • PostgreSQL: SQL, JPA/Hibernate, transactions, JSONB
  • REST API, OpenAPI, JWT, and OAuth2
  • Docker and Kubernetes, preferably AWS EKS
  • AWS services, including S3 and CloudFront
  • RabbitMQ or other messaging systems
  • Maven, JUnit, Testcontainers, and modern testing practices

Will be a plus:

• Experience with MapStruct and Liquibase
• Experience integrating payment providers and payment processing systems
• Experience using AI-assisted development tools: Cursor, GitHub Copilot, or similar tools

What we are ready to offer

• Real impact on the product and business, without lengthy approvals and bureaucracy
• Young and energetic team of professionals (average age 28-30 years)
• International product and global market
• Salary in currency
• Remote work within a time zone +-3 hours from GMT+3
• Opportunity for rapid and significant growth along with the project.