Senior Full Stack Software Engineer

About the role

Energy Aspects is looking for a Senior Full Stack Software Engineer to join its Engineering team in Athens. The team delivers the company's core web products: the client-facing platform used by energy traders, analysts and investors worldwide, together with the APIs and shared design system behind it. The role suits someone who enjoys owning features end to end, from the user interface down to the API, database and cloud infrastructure.

You will work in a small, senior, cross-functional team with product managers, designers, QA engineers and research and data teams, and collaborate closely with colleagues in London, Paris and other offices.

Key responsibilities

• Deliver features from planning and design through development, testing, deployment and maintenance.
• Build fast, accessible and intuitive user interfaces with React, Next.js and TypeScript, including interactive charts and tables.
• Design and develop APIs and backend services with Node.js and TypeScript on AWS, including third-party integrations.
• Model, query and serve data efficiently across the data stores behind the applications and APIs.
• Contribute to architectural decisions and improve performance, reliability and security, keeping frameworks and dependencies up to date.
• Promote best practices in automated testing, code review, CI/CD, observability and production support, using modern tooling and AI-assisted development.
• Collaborate with product managers, designers, QA engineers and research stakeholders, and mentor other engineers.

Required profile

• 5+ years of professional software engineering experience building and running production web applications.
• Strong architectural judgement, autonomy and ownership, with experience mentoring engineers.
• Excellent communication skills and fluent written and spoken English (Greek not required).

Required skills

• TypeScript and modern React, including server and client state management.
• Next.js or a comparable React framework.
• Node.js and TypeScript on AWS (ideally serverless), including REST API design and infrastructure as code.
• Automated testing (e.g. Vitest/Jest, Testing Library, MSW, Playwright) and CI/CD and cloud deployment (e.g. GitHub Actions, Vercel).
• Hands-on use of AI-assisted development tools and critical review of AI-generated code.

Nice to have

• Identity and access management (Auth0, OAuth 2.0/OpenID Connect, SAML)
• Data visualisation libraries (e.g. Highcharts) and search/caching infrastructure (e.g. Elasticsearch, Redis)
• Design systems (MUI, Tailwind), monorepo tooling (Nx, Turborepo) and Storybook
• Web performance optimisation and observability tooling (New Relic, OpenTelemetry)
• Interest in energy, commodities or financial markets

What we offer

• Competitive compensation with annual bonuses, private health insurance and substantial pension contributions.
• Company share options, subsidised gym memberships and a generous holiday policy.
• A socially active workplace with social clubs, and offices in prestigious buildings with nearby amenities.