Senior Backend Engineer

Apilex is a global legaltech company building AI that transforms how legal professionals work. Powered by a proprietary database of 200M+ court decisions and legal documents, our platform delivers semantic search, contract analysis, and automated legal drafting — turning days of legal research into seconds.

Since our founding, we've grown to a team of 90+ people and established ourselves as Türkiye's leading AI legal assistant. Now, we're taking it global — expanding into France, Germany, Brasil, Italy and Spain to compete in the billion-dollar legaltech market.

What sets us apart? We don't use off-the-shelf AI. We build domain-specific, closed-circuit AI models with multi-layered verification systems that eliminate hallucinations and deliver answers backed by real citations and legal reasoning. Every feature we ship changes how lawyers work, not in theory, but in practice.

We are hiring a Senior Backend Engineer to design and scale the high-traffic microservices that form the backbone of our global legal AI platform.

Key Responsibilities

• Scalable Architecture: Design and develop high-traffic, scalable microservice architectures to support our expanding global footprint.
• Code Excellence: Raise the bar on code quality by leading code review processes and implementing best practices across the backend.
• Technical Leadership: Provide mentorship to the engineering team and guide technical decision-making for complex features.
• System Integration: Build and maintain reliable integrations between core services, AI agents, and large-scale data stores.
• Performance Optimization: Ensure system reliability and low latency across distributed services through efficient caching and messaging strategies.

What We’re Looking For

• 5+ years of backend experience building and scaling Java and Spring Boot applications in production
• Strong foundation in software architecture design including OOP and SOLID principles across various scales
• Hands-on experience with both PostgreSQL and MongoDB including the ability to design hybrid data architectures
• Deep knowledge of Elasticsearch or similar technologies for high-performance search and indexing
• Practical experience with messaging systems like RabbitMQ or Kafka and in-memory caching with Redis
• Solid understanding of WebSocket and real-time streaming architectures for distributed environments
• Direct experience with cloud platforms and building automated CI/CD pipelines
• Ability to ship high-quality code and iterate quickly rather than waiting for perfect conditions

Why join us?

We're building the AI that lawyers rely on every day, across every area of their practice — the core of how thousands of legal professionals research, draft, and reason. You'll join a team solving one of the hardest challenges in AI: making it reliable enough for high-stakes, real-world decisions. We're scaling across Europe and Latin America, shipping fast, and setting the bar for what reliable AI looks like in legal.

Whatever your role, your work here will be visible and meaningful. We're one of the fastest-growing AI companies in Türkiye, and we're looking for ambitious people who want to build the future of legal technology on a global stage.

This is Apilex. AI for Legal. Join us.