ThetaRay

Full Stack Developer - Python

ThetaRay  •  Madrid, ES (Hybrid)  •  3 months ago
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Job 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 operate in an AI-augmented, Agentic SDLC engineering culture where developers actively collaborate with AI tools throughout the entire development lifecycle. Our teams use tools such as GitHub Copilot and continuously build internal Agents and Skills that help automate engineering workflows and accelerate development. We follow a spec-driven engineering vision where clear specifications, AI-assisted development, and modern tooling redefine how software is designed and delivered.

We are looking for an AI Fullstack Developer with strong Python and data engineering capabilities and the ability to contribute to frontend development when needed.

In this role, you will design and develop large-scale data processing systems and Big Data pipelines that power innovative AI-driven fintech solutions. These systems analyze massive financial datasets and support advanced risk detection, financial crime prevention, and intelligent analytics.

You will work across the full stack - building backend data platforms and microservices while also contributing to modern UI applications built with React or Angular.

This role is ideal for a developer who enjoys solving complex data challenges, building scalable distributed systems, and embracing modern AI-assisted development practices across the entire SDLC.

Responsibilities

Backend Development - Python & Big Data Systems

  • Design and develop backend services and large-scale data pipelines using Python
  • Build and maintain Big Data processing systems that power AI-driven fintech analytics
  • Develop scalable data processing workflows using technologies such as Spark, Pandas, and Airflow
  • Work with distributed data storage systems such as Elasticsearch, MongoDB, Redis, and object storage solutions like MinIO
  • Develop and maintain microservices-based architectures that integrate with data pipelines and AI systems
  • Design systems with strong focus on scalability, performance, and reliability
  • Investigate new technologies and drive innovation in data processing and analytics platforms

Frontend Development

  • Contribute to building modern UI features using React, Next.js, or Angular
  • Develop reusable components and responsive interfaces for data-driven SaaS applications
  • Integrate frontend applications with backend microservices and data platforms
  • Collaborate with UX designers and product teams to deliver intuitive and interactive user experiences

AI-Augmented & Spec-Driven Engineering

  • Use GitHub Copilot and other AI-assisted development tools as part of daily development
  • Work in a spec-driven development environment where clear specifications guide implementation
  • Participate in building and improving internal AI Agents and Skills that enhance engineering productivity
  • Explore and implement AI capabilities within both the product and engineering workflows
  • Contribute to evolving AI-assisted SDLC practices across the organization

General

  • Work in an Agile/Scrum environment with cross-functional teams
  • Take ownership across the entire development lifecycle, from design and implementation to testing and production troubleshooting
  • Collaborate closely with Product, QA, and DevOps teams
  • Follow best practices in software architecture, development, and testing

Continuously evaluate and adopt modern technologies


Requirements

Backend / Data Engineering

  • At least 3+ years of hands-on experience developing complex data-oriented systems using Python or other OOP languages
  • Experience with data processing frameworks such as Spark or Pandas
  • Experience developing and maintaining data pipelines or data-intensive platforms
  • Experience with distributed databases such as Elasticsearch, MongoDB, or Redis
  • Experience designing and developing microservices-based architectures
  • Experience working with containerized environments (Docker) and orchestration platforms such as Kubernetes or Helm
  • Strong troubleshooting skills in production environments

Frontend

  • Experience developing UI components using React, Next.js, or Angular
  • Strong knowledge of JavaScript/TypeScript, HTML5, and CSS3
  • Ability to contribute to frontend development as part of a fullstack responsibility

General

  • Experience working in Agile development environments
  • Experience with AI tools that enhance development workflows, such as GitHub Copilot
  • Strong analytical thinking and problem-solving skills
  • Curiosity, accountability, and strong teamwork skills
  • Ability to collaborate closely with Product, QA, DevOps, and cross-functional teams

Nice to Have

  • B.Sc. in Computer Science or related field
  • Experience with Java development is a strong advantage.
  • Familiarity with machine learning frameworks such as scikit-learn or TensorFlow
  • Experience with MinIO or Airflow
  • Experience with Red Hat OpenShift
  • Experience with CI/CD pipelines and development tools such as Git, Jenkins, and Docker
  • Experience working with distributed or hybrid teams
  • Experience mentoring or guiding other developers
ThetaRay

About ThetaRay

ThetaRay is transforming the way financial institutions detect and combat financial crime through the power of 𝗖𝗼𝗴𝗻𝗶𝘁𝗶𝘃𝗲 𝗔𝗜.

In a world where traditional, rule-based systems have failed to distinguish between good and bad actors —and where financial crime is increasingly pervasive—our solutions provide the much-needed remedy. We empower financial institutions to confidently grow their businesses, build trust with customers and regulators, and minimize their risk of financial crime.

The financial industry has been blinded by outdated, rule-based systems that created bottlenecks and increased compliance costs. These systems incorrectly flagged legitimate customers while missing the majority of financial crime, stifling growth and delivering poor customer service.

Our 𝗖𝗼𝗴𝗻𝗶𝘁𝗶𝘃𝗲 𝗔𝗜 solutions—driven by dynamic data analysis and machine learning—not only focus on identifying criminals but also on accurately recognizing the good customers and businesses that you rely on to thrive.

By leveraging the latest advancements in AI, we can detect the undetectable, uncover hidden connections, and make smart, data-driven decisions—enabling you to onboard customers confidently, reduce operational costs, improve customer experiences, and unlock opportunities worldwide.

ThetaRay is redefining success in the financial industry. Our Cognitive AI empowers you to thrive while ensuring financial crime is detected and blocked with unmatched accuracy. We believe the key to global financial prosperity and trust lies in identifying legitimate players while making it impossible for criminals to hide.

ThetaRay is the future of financial crime compliance, creating a safer, more efficient financial world.

Industry
IT & Software
Company Size
201-500 employees
Headquarters
New York
Year Founded
2013
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