Tech Lead – Java, Spring Boot, Microservices & Digital Assets (Crypto/Blockchain) - Dubai

Optimum Solutions Pte Ltd; Dubai; On-site; AED 300,000 - 450,000; Full time

Job summary

Optimum Solutions Pte Ltd in Dubai seeks a Senior Backend Tech Lead to drive Java/Spring Boot based systems, microservices architecture, and distributed solutions.

You will own API design (OpenAPI/Swagger), implement security (OAuth2, JWT), and ensure fintech domain compliance while guiding cross-functional teams.

This role emphasizes leadership, architecture, and delivery of scalable systems in a fast-paced environment.

Qualifications

• 10+ years of backend software development with Java/Spring Boot.
• 3+ years as Tech Lead leading cross-functional teams.
• Proven experience designing and delivering microservices architectures and distributed systems.
• Deep understanding of REST API design, OpenAPI (Swagger), and API security (OAuth2, JWT).
• Track record of leading large-scale projects and cross-functional technical efforts.
• Domain experience in digital assets (cryptocurrency, custody, exchange or trading platforms, tokenization, or blockchain-based financial services).
• Deep understanding of security, compliance, and data integrity requirements in fintech applications.
• Comfortable with CI/CD, infrastructure-as-code, and monitoring tools.
• Excellent problem-solving, communication, and stakeholder management skills.

Responsibilities

• Lead backend development teams to deliver scalable microservices architectures.
• Design and deliver distributed systems for fintech applications.
• Own API design, OpenAPI specifications, and API security (OAuth2, JWT).
• Lead large-scale projects and coordinate cross-functional technical efforts.
• Mentor engineers and drive CI/CD and IaC adoption.
• Ensure security, compliance, and data integrity in fintech platforms.

Skills

Java

Spring Boot

Tech Lead

Microservices

REST API design

OpenAPI/Swagger

OAuth2 / JWT

Fintech domain experience

Security & compliance

CI/CD

Infrastructure as Code

Monitoring

Stakeholder management

Job description

• 10+ years of experience in backend software development, with strong expertise in Java and Spring Boot
• At least 3+ years working as a Tech Lead
• Proven experience designing and delivering microservices architectures and distributed systems
• Deep understanding of REST API design, OpenAPI (Swagger), and API security (OAuth2, JWT)
• Track record of leading large-scale projects and cross-functional technical efforts
• Domain experience in digital assets (cryptocurrency, custody, exchange or trading platforms, tokenization, or blockchain-based financial services)
• Deep understanding of security, compliance, and data integrity requirements in fintech applications
• Comfortable with CI/CD, infrastructure-as-code, and monitoring tools
• Excellent problem-solving, communication, and stakeholder management skills