Senior Software Engineer - Distributed Systems & Platform Engineering

Selby Jennings
New York, New York, United StatesFull-timePosted Sep 16, 2026

About the role

Salary ranges based on experience & performance in interviews.

No 3rd party or Corp-to-Corp. This is a direct hire role.

We are partnering with a leading global investment and technology-driven organization that is scaling multiple engineering teams focused on building business-critical platforms.

This is an opportunity for engineers who enjoy owning complex systems, solving difficult distributed-systems problems, and seeing a direct connection between engineering decisions and business outcomes.

Unlike many larger organizations where engineers contribute to a small piece of a product, engineers in this environment own systems end-to-end, influence technical direction, and work closely with senior stakeholders to deliver high-impact solutions.

What You'll Be Working On

You may contribute to platforms involving:

Distributed backend systems

Event-driven architectures

High-volume transaction processing

Data and ingestion platforms

Workflow orchestration systems

Financial infrastructure and operational platforms

Real-time business-critical services

Large-scale API and integration ecosystems

Cloud-native platform modernization

What We're Looking For

3+ years of professional software engineering experience

Strong commercial experience with Java

Experience building distributed systems and microservices

Strong understanding of event-driven architectures

Experience with technologies such as:

Spring Boot

Kafka

Kubernetes

AWS

REST APIs

SQL and NoSQL databases

Experience owning systems through design, development, deployment and production support

Strong problem-solving and system design skills

Ability to explain technical decisions and tradeoffs clearly

Strongly Preferred

Experience with one or more of:

Trading systems

Payments infrastructure

Transaction processing

Reconciliation platforms

Settlement workflows

Market data systems

Reference data platforms

Order management systems

Large-scale data pipelines

Workflow orchestration platforms

What Makes Someone Successful Here

The strongest engineers typically:

Remain highly hands-on

Take ownership beyond their immediate responsibilities

Influence technical direction

Understand the business impact of their work

Have built systems that are still running in production today

Enjoy operating in small, high-performing teams

Thrive in environments with significant ownership and accountability

Why Engineers Make The Move

Larger ownership of critical systems

More influence on architecture and product direction

Faster career progression opportunities

Exposure to exceptionally strong engineering peers

Complex technical challenges at scale

Direct impact on business outcomes

Responsibilities

  • Contribute to distributed backend systems
  • Work on event-driven architectures
  • Handle high-volume transaction processing
  • Develop data and ingestion platforms
  • Manage workflow orchestration systems
  • Support financial infrastructure and operational platforms
  • Deliver real-time business-critical services
  • Build large-scale API and integration ecosystems

Qualifications

  • 3+ years of professional software engineering experience
  • Strong commercial experience with Java
  • Experience building distributed systems and microservices
  • Strong understanding of event-driven architectures
  • Familiarity with Spring Boot, Kafka, Kubernetes, AWS, REST APIs, SQL and NoSQL databases
  • Experience owning systems through design, development, deployment and production support
  • Strong problem-solving and system design skills
  • Ability to explain technical decisions and tradeoffs clearly

Benefits

  • Larger ownership of critical systems
  • More influence on architecture and product direction
  • Faster career progression opportunities
  • Exposure to exceptionally strong engineering peers
  • Complex technical challenges at scale
  • Direct impact on business outcomes

Skills mentioned

JavaDistributed SystemsMicroservicesEvent-Driven ArchitectureSpring BootKubernetesAWSREST APIsSQLNoSQL

About Selby Jennings

From Investment Banking, Risk Management, Quantitative Trading, and Insurance, to Investment Management, Sales & Trading, Technology, and Wealth Management, Selby Jennings supports the world’s largest financial institutions to revolutionary fintech start-ups with all their hiring needs as a leading Financial Sciences and Services talent partner.  If you would like to talk to us about your current talent needs, please request a call back here and one of our specialist consultants will call you back to discuss your hiring needs: https://www.selbyjennings.com/request-a-call-back

Professional Services1,001-5,000 employeesLondon, Greater London