Senior Software Engineer (Java / High-Performance Systems)

Job Description

Senior Software Engineer (Java / High-Performance Systems)

Location: Remote – United States (Open to Europe with EST time overlap)
Employment Type: Full-time
Seniority Level: Senior
Salary: $160,000 – $200,000

Overview
A technology company building high-performance distributed systems and ledger infrastructure is looking for a Senior Java Software Engineer to join its engineering team.

This role is ideal for engineers who enjoy solving complex performance challenges and building low-latency, high-throughput systems from scratch. You will contribute to the design and development of systems where correctness, efficiency, and reliability are critical, including infrastructure supporting publicly visible ledger technologies.

Key Responsibilities

• Design and develop high-performance backend systems in Java

• Build low-latency, high-throughput services from the ground up

• Invent and implement data structures, algorithms, and protocols

• Optimize memory usage, concurrency, and system performance

• Design system architectures for distributed ledger infrastructure

• Develop tools and profilers to measure and improve system execution

• Write robust testing frameworks to ensure system stability and correctness

• Mentor engineers and lead complex technical initiatives

• Contribute to architectural decisions impacting large-scale financial systems

Requirements

• 10+ years of professional software development experience

• Deep expertise in Java and JVM internals

• Strong knowledge of concurrency, threading, garbage collection, and memory models

• Experience building high-performance, low-latency systems

• Strong understanding of data structures, algorithms, and computer science fundamentals

• Experience developing systems from scratch with minimal dependencies

• Familiarity with performance analysis tools such as JMH, async-profiler, JFR, YourKit, or similar

• Masters degree in Computer Science or equivalent practical experience

Nice to Have

• Experience with distributed systems or blockchain technologies

• Knowledge of cryptographic primitives and security concepts

• Familiarity with Web3 or smart contract platforms

• Experience with event-driven architectures or high-frequency trading systems

• Knowledge of test-driven development and CI/CD practices

Whats Offered

• Competitive compensation package

• Fully remote work environment

• Opportunity to work on high-impact financial infrastructure systems

• Collaborative engineering culture focused on performance, correctness, and technical excellence