Full Stack Developer

ThetaRay

Location not specified

Posted: December 5, 2025

Required Skills

Job Description

Madrid, Spain
Description
About Us
ThetaRay is a global leader in AI-driven Big Data analytics, empowering financial organizations to detect and prevent financial crime, uncover operational inefficiencies, and identify new growth opportunities. Our Intuitive AI technology helps institutions fight money laundering, fraud, terrorist financing, human trafficking, and other sophisticated threats. We embrace an AI-augmented, Agentic SDLC engineering culture where developers use advanced AI tools throughout the development process to accelerate innovation and delivery.

Position Overview
We are seeking a Full Stack Developer (mid-senior) with strong frontend and backend experience and a passion for AI-assisted development. You will design and implement complex UI features, build robust backend services, and contribute to a scalable cloud-based architecture. You will also leverage AI tools such as Copilot, Cursor, Claude Code, and MCP to enhance productivity. In this role, AI acts as your co-developer, helping you move faster and smarter.

Responsibilities:
Frontend Development
Implement complex and high-performance UI features.
Design and develop reusable UI components.
Build responsive, interactive, scalable web applications using Angular (8+) and optionally React.
Collaborate with UX designers to deliver intuitive experiences.
Develop and maintain SaaS web client components integrated with microservices.

Backend Development
Design, implement, and maintain backend services and APIs using Java (8+), Spring Boot, Hibernate, and microservices.
Build scalable systems capable of handling large datasets.
Write clean, testable code with unit tests.
Evaluate and adopt new technologies.
Contribute to system architecture and documentation.

General
Work in an Agile/Scrum environment.
Collaborate with cross-functional teams to deliver end-to-end solutions.
Use AI tools throughout the SDLC to improve speed and quality.
Innovate, solve complex problems, and contribute to architectural decisions.
Follow best practices in design, development, and testing.
Requirements
Frontend
2–4+ years with Angular 8+ (required), React (advantage).
Strong knowledge of ES6+, HTML5, CSS3.
Experience with responsive design and state management (MobX/Redux).
Testing frameworks (Jasmine, Karma) are an advantage.

Backend
3+ years of Java development.
Strong experience with Spring, Spring Boot, Hibernate, REST APIs, and microservices.
Experience with SQL/NoSQL databases.
Experience with Kafka or similar platforms.
Linux experience.
Familiarity with CI/CD tools (Maven, Git, Jenkins, Docker).
Experience writing architecture documents.

General
B.Sc. in Computer Science or related field.
Strong communication and problem-solving skills.
Ability to self-learn and work independently.
Passion for AI tools for developers (Copilot, Cursor, Claude, etc.).
Interest in Agentic SDLC and modern AI-augmented workflows.
Adaptability to rapidly evolving technologies.

Nice to Haves
Experience with AI/ML projects.
Understanding of agentic AI principles.
Experience with Big Data systems.
Knowledge of advanced DevOps environments.
Familiarity with SVG, RxJS, or WebSockets.
Experience in security or financial domains.

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