Senior Full-Stack Software Engineer (Java/Typescript/Python) - Tieto Tech Consulting (m/f/d)

Employment: Full-time Experience level: Mid-Senior Level Job Description Tieto Tech Consulting (MentorMate from 2001 to 2026) provides design-led, data-centric, and AI-powered digital engineering & consulting services to enterprises worldwide. With a strong heritage of Nordic quality, local presence, and global-scale operations, we are backed by 8,500+ IT professionals. Our clients trust us for advanced data and analytics skills, top industry-specific expertise, specialized software R&D, and the capabilities of a multinational team. We are part of Tieto, a leading technology company with an annual revenue of approximately EUR 2bn.    Tieto Tech Consulting’s team in Bulgaria consists of 500+ professionals specializing in the development of tailored digital solutions in diverse industries. We're looking for a Senior Software Engineer (Java/Typescript/Python) for our Platform Applications team to design, build, and operate shared services used across Evinova - spanning access management, analytics, notifications, and customer-facing portals. You'll mentor teammates, influence architecture, and uphold best practices.  Key Responsibilities Design and build authentication and authorization services used platform-wide, including token issuance and permission resolution Operate and extend our Keycloak-based SSO, covering multi-tenant login, MFA, and IdP federation Build and maintain an analytics SDK that products integrate to send usage data, and a tool for visualizing that data Build notification services (email, in-app, etc.) consumed by products across Evinova Build a customer portal content platform that lets internal Evinova teams publish and manage content for external users Collaborate with product teams adopting shared platform services, defining requirements and driving consensus on deliverables Mentor engineers to promote technical growth and knowledge-sharing within the team Build and deploy applications with AWS native services and manage CI/CD pipelines through GitHub Actions Required Experience & Qualifications  5+ years' experience in software engineering, specializing in API and full-stack development Skilled in Java, TypeScript, or Python for scalable systems Experience building and operating shared/platform services (SDKs, APIs) consumed by multiple teams Experienced with AWS services Strong in SQL and NoSQL databases Familiar with GitHub Actions for CI/CD Excellent communication and collaboration skills A significant advantage would be      Experience with authentication/authorization systems (OAuth2/OIDC, JWTs, SSO, RBAC) or Keycloak Familiarity with client SDK design or data visualization tooling Experience with notification systems or customer-facing portal/content products Additional Information At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity. Diversity, equity and inclusion | Sustainability | Tieto Stay alert to recruitment scams: • Tieto only communicates via  @tieto.com  email addresses. • We never ask candidates to pay fees or share financial details during recruitment. • If you receive a suspicious message claiming to be from Tieto, don't respond — verify it via our official careers site. • For more information visit  Important Advisory Regarding Recruitment Fraud | Tieto Blog