Staff Engineer

Our client, a fast-growing fintech platform helping millions of people grow their money through AI-driven financial guidance, is seeking a Staff Engineer to join its team based in Athens.

The Role The Staff Engineer will be a technical leader bridging complex backend services, mobile client architecture, and business impact, responsible for defining technical roadmaps, elevating engineering culture, and architecting systems that enable rapid experimentation across the stack.

Key Responsibilities

• Architect and design modular, scalable, and observable systems supporting high-volume experimentation and user engagement flows, spanning from the mobile client to backend services
• Drive the cross-platform strategic vision and roadmap, ensuring the architecture supports high-volume experimentation, rapid iteration, and future business needs
• Promote continuous improvement by driving architectural standards, engineering best practices, and operational excellence across multiple teams
• Provide guidance and mentorship to senior engineers and other team members, fostering a culture of technical excellence and career growth
• Identify root causes of systemic issues and architectural bottlenecks, determining short-term mitigations and long-term strategic resolutions
• Work across the full software lifecycle, from high-level system design to deployment and post-release monitoring
• Partner closely with Product Managers and Data Scientists to design technical solutions that unlock new growth opportunities and optimise user funnels

What You'll Bring

• Proven track record of technical leadership, preferably in a mobile-heavy or full-stack capacity
• Experience designing and architecting systems at scale
• Deep experience with A/B testing frameworks, experimentation platforms, or data-intensive growth loops
• High level of pragmatism, with the judgement to know when to build for scale and when to optimise for speed of learning
• Strong planning and prioritisation skills, with the ability to translate high-level business goals into actionable technical strategies across the stack
• Ability to share product insight with stakeholders, challenge product decisions with data, and act as a bridge between Engineering, Product, and Data Science
• Demonstrated capacity to clearly and concisely communicate complex technical, architectural, and organisational challenges to both technical and non-technical executives
• Experience working within cross-functional teams, with the ability to facilitate technical decision-making and resolve conflicts across teams
• Self-motivated and self-managing, with excellent organisational skills and a focus on high-leverage work
• Comfortable working with both strongly and dynamically typed languages

What's in it for You

€6,500 to €8,000 gross/month, along with stock options, private health insurance, an annual training budget, hybrid working from the Athens office, 25 days holiday plus bank holidays, 45 work-from-anywhere days, a two-week sabbatical after four years, enhanced parental leave, one paid volunteering day annually, and an annual team trip. Engagement via a limited company (B2B basis) is also available for those who prefer this arrangement.