Senior Full-stack Developer (Java & React)

Short company description

At Evolve today we offer complex Human Resources services, from business consulting to headhunting and recruitment. We have extensive experience in finding talented professionals, for a variety of industries, especially in the IT sector.
We started with a dream: to create a Human Resources company with a strong, unique profile on the market, deeply shaped by our core values: commitment to performance, professionalism, a balanced approach and deep satisfaction for our clients.
From that moment, we nurtured special relationships and we continuously evolved, being flexible, but staying true to our values. We aim higher and higher and we invite you to EVOLVE with us!

Requirements

We are Evolve Today, a recruitment agency connecting top engineering talent with world-class opportunities. On behalf of our client — a global next-generation technology partner delivering intelligent, scalable digital solutions across media, finance, healthcare, and banking — we are hiring a Senior Full-stack Developer (Java & React).
Our client builds enterprise-grade platforms with shared identity and access management systems used across multiple products. Their engineering teams operate as an extension of their clients’ organizations, delivering complex digital solutions end to end, from distributed authentication systems to production-grade microservices.

Role Overview
This is a backend-heavy (80%) full-stack role within a shared platform team focused on authentication and authorization systems. You will work across legacy and modern IAM environments, improve authentication services, contribute to authorization flows, and implement features spanning backend logic and UI level changes.

We’re looking for a Senior Fullstack Engineer (8+ years) with strong backend expertise in Java, solid frontend exposure in React, and hands-on IAM experience (Auth0, Okta, Keycloak, SSO, RBAC, distributed identity systems). You should be able to ramp up quickly, operate autonomously, and contribute meaningfully within one sprint.

Contract: CIM
Location: Romania (remote or hybrid from Cluj / Iași)

If you’re a senior engineer who thrives in complex distributed environments and wants to build large-scale ML systems, send your profile and let’s talk.

Tech Stack & Requirements

Java + Spring Boot
Strong experience building REST APIs
OpenSearch or strong NoSQL background (consumption-focused; indexing not required)
ReactJS / NextJS
Experience working with design systems
Strong IAM knowledge: Auth0 / Okta (authentication), Keycloak (authorization)
Solid understanding of SSO, RBAC, and distributed identity systems
Frontend exposure with JavaScript for authentication-related flows

Must Have Profile

Strong full-stack engineer with deep backend expertise
Hands-on experience with IAM systems (beyond basic integrations)
Experience with SSO and distributed authentication systems
Ability to ramp up within 1 sprint (2 weeks)
High autonomy and ability to contribute quickly

Nice to Have

Experience working with multiple authentication systems (legacy + modern)
Exposure to complex enterprise identity environments
Deeper IAM experience (SSO flows, identity provider configuration, RBAC models)

Responsibilities

Responsibilities

Improve and customize authentication services used across multiple enterprise products.
Contribute to authorization flows in collaboration with a dedicated IAM team.
Implement features such as IP registration, UI adjustments, and authentication-related frontend logic.
Work across both legacy and modern identity systems.
Collaborate closely with backend-focused engineering teams in a distributed environment.