Principal Software Engineer

About the role

Epignosis, a Greek SaaS company behind TalentLMS, eFront, TalentCards and TalentHR, is looking for a Principal Software Engineer to act as technical authority across its four products. As the most senior individual contributor, you will drive architectural decisions and shape the shared platform foundations, with an initial focus on common identity, authentication, billing and subscription capabilities.

Key responsibilities

• Set cross-product technical direction and architectural constraints, anchored on the emerging platform layer of identity and billing
• Lead the design of shared platform services, starting with a common identity layer, and define the patterns for future services
• Build proofs of concept, write the first version of difficult features and unblock stuck teams
• Review code and designs, mentor Staff and junior engineers, and help use AI-assisted development safely
• Advise on build-versus-buy for foundational services and identify organisation-level technical risks
• Partner with engineering managers and product leadership, translating technical reality into business consequences

Required profile

• 6+ years building production software, with several years at staff or principal level
• Experience with multi-tenant SaaS architecture, shared services and cross-product data at scale
• A strong security instinct and experience designing shared platform services consumed by multiple teams
• Ability to influence without authority and clear technical writing
• Collaborative, direct and kind communication style; pragmatic, language-agnostic mindset

Required skills

• Backend development in modern PHP
• Platform-team operating models such as Team Topologies and platform-as-a-product
• Plus: merging products into a unified suite, billing consolidation, OAuth 2.0 / OIDC / SAML, CI/CD, IaC and observability, TypeScript

What we offer

• Competitive salary and bonuses, stock options for everyone
• Private health coverage, nutritionist access and in-house blood bank
• Generous family policy, daily meals and monthly meal allowance
• OASA transport card or parking, hybrid work in Athens
• Learning budget for coaching, conferences and degrees, and access to the Starttech Ventures ecosystem