Core Java Developer

TEKsystems; Frankfurt; Hybrid; EUR 95,000 - 130,000; Full time

Job summary

TEKsystems is seeking a Trading Application Developer / Technical Lead in Frankfurt to modernize a business-critical trading platform. You will work with a small team to deliver high-performance solutions, emphasizing security, low latency, and scalable design.

Responsibilities include analyzing legacy code, implementing improvements, and collaborating with analysts and stakeholders to ensure a smooth migration. English required; German is beneficial.

Qualifications

• Experience delivering high-performance trading systems.
• Strong Java/C++ skills and knowledge of low-latency architectures.
• Security-aware development practices and secure design.
• Experience with messaging systems and integration patterns.
• Proven ability to communicate with stakeholders and translate business needs into technical solutions.

Responsibilities

• Analyse and modernize a legacy trading application.
• Design and implement scalable, secure, and high-performance solutions.
• Collaborate with developers, business analysts, and key stakeholders.
• Improve application performance with a focus on low-latency processing.
• Support architectural decisions and technical solution design.
• Ensure security best practices are incorporated throughout the migration.

Skills

Java

C++

Low-latency systems

Trading / Capital Markets

Security design

Messaging patterns

Stakeholder communication

Job description

Location: Frankfurt am Main

Trading Application Developer / Technical Lead (m/f/d) | Frankfurt

For one of our clients in the financial services sector, we are looking for an high level Developer / Technical Lead to support the modernization of a business-critical trading application.

Project Overview

The client is replacing a legacy trading platform due to security and technology modernization requirements. The application is used in a trading environment where system performance and latency are critical factors. You will work closely with a team of 4 developers and 2 business analysts to drive the transformation and ensure a seamless migration.

Responsibilities

• Analyse and modernize a legacy trading application
• Design and implement scalable, secure, and high-performance solutions
• Collaborate with developers, business analysts, and key stakeholders
• Improve application performance with a focus on low-latency processing
• Support architectural decisions and technical solution design
• Ensure security best practices are incorporated throughout the migration

Required Skills

• Strong software development (Java and/or C++)
• Proven knowledge within Trading, Capital Markets, Investment Banking, or Electronic Trading environments
• Hands-on knowledge with low-latency and high-performance systems
• Knowledge modernizing or replacing legacy applications
• Solid understanding of software security and secure application design
• Knowledge with messaging technologies and integration patterns
• Strong stakeholder communication skills

Nice to Have

• FIX Protocol
• OMS / EMS
• Market Data systems knowledge
• Kafka, MQ, or similar messaging platforms
• Cloud exposure (AWS, Azure, or GCP)

Project Details

• Location: Frankfurt am Main
• Working Model: 4 days onsite / 1 day remote
• Start: ASAP
• Duration: Long-term engagement
• Language: English required, German beneficial

If you have experience delivering high-performance trading systems and enjoy modernizing complex legacy applications in a business-critical environment, I would be happy to discuss the opportunity in more detail.