Software Engineer →

Phexum; Fatih; On-site; TRY 350,000 - 520,000; Full time

Job summary

Phexum is seeking a Software Engineer to join our team in Istanbul on a full-time, on-site basis. You will contribute to AI-based application development, focusing on backend and integration tasks for LLM projects.

Responsibilities include building scalable services with Java and TypeScript, implementing MCP and LLM integrations, and optimizing PostgreSQL data models. Collaboration across the product lifecycle is essential to deliver high-quality software on schedule.

Qualifications

• 5+ years of professional software development experience.
• Hands-on experience with Java, TypeScript, NestJS and PostgreSQL.
• Experience with LLM programming and MCP (Model Context Protocol) is required.

Responsibilities

• Actively participate in the backend and application development processes of AI-driven projects.
• Develop scalable, secure, and high-performance services using Java, TypeScript, and NestJS.
• Implement LLM (Large Language Model) and MCP integrations, embedding agentic/AI architectures into applications.
• Perform database modeling, structural design, query optimization, and management on PostgreSQL.
• Maintain codebase sustainability and ensure developments adhere to high code quality and testing standards.
• Collaborate effectively with the team across the product development lifecycle to deliver assigned tasks on time.

Skills

Java

TypeScript

NestJS

MCP

LLM programming

PostgreSQL

Tools

PostgreSQL

Job description

We are looking for a Software Engineer to join our team full-time at Phexum to work on our AI-based application development projects.As part of our team, you will play an active role in LLM (Large Language Model) integrations, modern software architecture design, and database management processes. We are looking for team members who closely follow emerging technologies and actively contribute to application development lifecycles.General Requirements & Work Conditions:- Work Model: Full-time, On-site. Remote or hybrid working options are not available.- Experience: Minimum 5 years of professional software development experience.- Military Status: Military service completed or deferred for at least 2 years (for male candidates).- Technical Qualifications: Hands-on experience with Java, TypeScript, NestJS, MCP (Model Context Protocol), LLM programming, and PostgreSQL.

• Actively participate in the backend and application development processes of AI-driven projects.
• Develop scalable, secure, and high-performance services using Java, TypeScript, and NestJS.
• Implement LLM (Large Language Model) and MCP (Model Context Protocol) integrations, embedding agentic/AI architectures into applications.
• Perform database modeling, structural design, query optimization, and management on PostgreSQL.
• Maintain codebase sustainability and ensure developments adhere to high code quality and testing standards.
• Collaborate effectively with the team across the product development lifecycle to deliver assigned tasks on time.