Junior Software Engineer (Java, React, TypeScript)

About the role

Nasdaq is looking for a Junior Software Engineer in Vilnius, Lithuania, reporting to the Senior Director of Software Engineering. You will build the Java services and React/TypeScript applications powering a new R&D team focused on responsible AI for global financial markets. The role suits someone who takes full ownership of their deliverables, embraces AI-assisted ways of working and thrives in a team that values candid feedback and learning.

Key responsibilities

• Build and maintain backend services with Java and Spring, and develop user-facing applications with React and TypeScript, owning capabilities end to end.
• Design and implement secure integrations using REST and modern agent-to-agent protocols, with unit testing, manual validation and test automation.
• Contribute to requirements analysis and architecture discussions, following and shaping decisions affecting team delivery.
• Collaborate with DevOps on deployment automation, observability and portfolio security across environments.
• Apply AI-assisted tooling and Nasdaq's GenAI Platform to improve and optimise every step of development.

Required profile

• Bachelor's degree in Computer Science, Engineering or equivalent practical experience.
• Proven years of experience in full-stack software engineering, with production-level Java expertise applying object-oriented design, design patterns and SOLID principles.
• Experience building component-based web applications; React and TypeScript experience is strongly valued.
• Solid SQL skills (CRUD, schema design, database-backed services) and strong data structures and algorithms knowledge.
• Practical experience using AI-assisted tools in a real development workflow.
• No previous unspent convictions for criminal offences under Lithuanian law, except minor road traffic violations.

Required skills

• Java, Spring, React, TypeScript, SQL
• Git workflows, Linux command line, Docker or Podman
• Preferred: LLM or agent development (function calling, RAG, prompt engineering), IaC (Terraform/OpenTofu), Python, Kubernetes, fintech background

What we offer

• Base pay of EUR 35,000 - 61,000, plus short-term and long-term incentives and an employee stock purchase plan.
• Annual bonus, annual equity grant, voluntary pension plan with company contributions.
• 20 vacation days plus additional days by tenure, 6 extra flex days per year, and up to 20 days of work from almost anywhere.
• Paid time off for volunteer work, flexible health insurance, life and accident insurance, wellness activities, 24/7 mental health support and a global mentoring program.
• Hybrid setup with at least 3 days a week in the office, and a modern office with snacks and weekly breaks.