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About the Role

We are looking for a Senior Java / Systems Engineer with significant experience in Platform Exchange Systems to design, deliver, and optimise production-ready, high-performance, low-latency technology using Aeron. You are a hands-on engineer who enjoys designing and optimising low-latency Java services and protocols across the full delivery lifecycle, driven by evidence-based engineering, automated testing, benchmarking, and profiling.

Responsibilities

Design, build, and optimise low-latency Java services and protocols for an Exchange Accelerator product across the delivery lifecycle.
Define order, session, instrument, and account models alongside exchange integration boundaries.
Develop automated testing strategies and perform evidence-based performance benchmarking and profiling.
Collaborate directly with client teams, SREs, QA, and leadership to ensure exchange readiness and durable production fixes.
Engage with client engineering and business stakeholders, communicating technical trade-offs clearly.
Support the product in production across multiple client deployments.
Independently own key technical workstreams from concept to production readiness.
Deliver maintainable, observable, and well-tested systems aligned with core architecture.
Establish trusted relationships with clients through clear communication and steady delivery.

Requirements

Strong server-side, low-latency Java expertise (concurrency, memory management, I/O, and performance profiling).
Solid exchange, risk, or matching-engine experience.
Hands-on experience building automated testing strategies, running performance benchmarks, and diagnosing production issues.
Excellent technical communication and collaborative problem-solving skills.
Experience with order entry and market data protocols (e.g. FIX, ITCH).
Familiarity with low-latency frameworks such as Aeron, Chronicle, or LBM.
An understanding of replicated state machines, event sourcing, or deterministic systems.
Exposure to cloud environments (AWS/GCP), containers, Kubernetes, or observability tooling.

Skills

Java
Platform Exchange Systems
Low-latency
Aeron
Automated testing
Benchmarking
Profiling
FIX
ITCH
Chronicle
LBM
Replicated state machines
Event sourcing
Deterministic systems
AWS
GCP
Kubernetes

Location

London
New York
Barcelona
Montreal
Manila

Work Type

Hybrid

Experience Level

Senior

Benefits

25 days holiday
Family medical and dental
Pension plan
Season ticket loan
Gym subsidy
Life insurance
Long-term disability insurance
Employee Assistance Plan
Outside IR35 contracts for contractors

About the Company

Adaptive is a technology provider firm that partners with capital, commodity, and digital market participants to build custom front-office technology, messaging systems, and trading infrastructure.
Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage.
Our clients include the world’s leading investment banks, investment managers, fintechs and capital market service providers.
With a global reach, with offices in London, New York, Barcelona, Montreal, and Manila, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions, and we value technical pragmatism, collaboration, and clear communication.
We are immersed in high-standard engineering culture.
Our fantastic team takes pride in crafting complex technical solutions but also loves sharing their knowledge and helping you grow professionally.
We offer the opportunity to take part in the growth and development of a great company.
Our teams feel free to speak up, make suggestions and raise concerns.
We foster a collaborative team environment where we all work together, respect each other, and pitch in.
We provide great consideration for work/life balance with a highly-flexible, hybrid working model and well-being benefits.
We work hard to provide a positive, collaborative and inclusive culture and to positively impact our staff and local communities through different well-being, diversity and inclusion programmes.

Equal Opportunity

Diversity and inclusion are key to a great workplace, and Adaptive is better when it’s more representative of the world around us.
We want everyone to feel comfortable bringing their whole selves to work without any fear of judgment or negativity.
All we ask is that our colleagues are respectful, collaborative, passionate about what they do, and have the skills needed to be successful in their roles.
The employment/engagement is subject to an acceptable background check that will be run by Adaptive.