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Adaptive Financial Consulting

Java Distributed Systems Engineer - Montreal - Fintech

Montreal, QC, Canada

Posting language: English
Posted: Oct 2, 2026

Apply About employer

Applications open in a new tab.

Original job description

WE ARE:

Adaptive is a product-led financial technology company with deep expertise in capital, commodity, and digital markets. We build technology for investment banks, investment managers, fintechs, and capital markets service providers. Our consulting teams work with clients to implement and extend that technology, but our starting point is product engineering: solving difficult problems and building software that creates lasting competitive advantage.

We are hiring a Java Distributed Systems Engineer to help build Aeron Sequencer, our technology for applying state machine replication to capital markets. You will work on distributed systems that enable other engineering teams to build performant, reliable software. This is a hands-on role with the opportunity to influence product decisions, architecture, engineering practices, and how we communicate our work.

What you will do:

Analyse, design, discuss, and develop distributed systems based on replicated state machines.
Write clean, efficient, maintainable, and self-documenting Java code.
Design and evolve messaging protocols and software libraries.
Troubleshoot and debug Java applications and distributed systems.
Apply testing, benchmarking, measurement, and profiling to improve correctness and performance.
Participate in code reviews, pairing, and technical discussions to raise the quality of our work.
Contribute to product decisions, not just task execution.
Keep up to date with relevant software engineering technologies and practices.
Communicate technical decisions and priorities clearly to technical and non-technical stakeholders.

What you will bring:

Experience designing, building, debugging, and operating distributed systems.
Strong experience developing server-side software in Java.
Experience designing and evolving messaging protocols or software libraries.
Experience using different forms of testing to support software quality, including correctness and performance.
Experience measuring, benchmarking, and profiling components or systems.
Strong written and verbal communication skills.
A collaborative approach, with a genuine interest in sharing knowledge and learning from others.
The judgement to prioritise competing demands based on long-term value and explain those priorities to stakeholders.
The confidence to challenge the status quo and suggest improvements, both technical and cultural.

Useful additional experience:

You do not need experience in every area below. It would be valuable if you have worked with one or more of the following:

Messaging technologies or deterministic, replicated state machines.
Low-latency, high-throughput, or predictable-performance systems.
Property-based testing or deterministic simulation testing.
Financial interchange protocols such as FIX or ITCH.
OMS, EMS, or exchange systems.
C, C++, or other programming languages.
Build tools and engineering automation, such as Gradle or GitHub Actions.
Cloud platforms such as AWS, GCP, or Azure.
Container orchestration platforms such as Kubernetes.
Pre-sales or customer-facing technical discussions.
Building a public technical presence through blogs, conference talks, or external video content.

Why Adaptive:

Interesting engineering problems. Work with passionate engineers on software where correctness, performance, and ease of use matter.
Product influence. Help shape technology that is used to solve complex problems in financial markets, rather than simply delivering predefined client requirements.
Collaborative teams. We share knowledge, learn from one another, respect different perspectives, and contribute wherever help is needed.
Flexible working. We support a highly flexible, hybrid working model.
A sustainable pace. Work-life balance is important to us, supported by wellbeing benefits and a focus on long-term performance.
An inclusive culture. We aim to create a positive, collaborative environment and support our people and local communities through wellbeing, diversity, and inclusion programmes.

Adaptive has offices in London, New York, Barcelona, Montreal, and Manila, bringing together a global team with a shared focus on building better financial technology.

Employee Benefits

We offer benefits with you in mind 💜

23 days of holiday
50 % of the cost of group insurance, inlcuding health, dental, life insurance, and short- or long-term disability cover
Pension contributions matched up to 5% of your annual salary
50 % of your monthly public transport pass
50 % of your gym membership
Hybrid working

The interview process

Interview processes can be long and boring, that's not our way.

What you can expect:

1- a chat with one of our friendly recruiters.

2- a technical call with some of our engineering colleagues 3- a face-to-face meeting (zoom or in our office) with technical colleagues and our local director.

Your recruiter will explain all you need to know about the process.

DIVERSITY AND INCLUSION : 💜

Diversity and inclusion are essential to a collaborative and positive workplace. Adaptive expects all staff to bring their full selves to work and to feel comfortable doing so because we want to be reflective of the world around us. Come along and be who you are, without judgement or negativity.

Please note that the successful applicant will be asked to go through a background check that we will arrange.

Apply About employer

More about this job

Responsibilities

You will design and develop distributed systems based on replicated state machines to support capital markets technology. This role involves writing clean Java code, evolving messaging protocols, and collaborating with engineering teams to ensure high performance and reliability.

Requirements

Candidates must have strong experience in building and debugging server-side Java applications and distributed systems. You should also possess excellent communication skills and the ability to contribute to product architecture and technical decision-making.

Skills

Java
Distributed systems
State machine replication
Messaging protocols
Software libraries
Debugging
Benchmarking
Profiling
Code reviews
Performance optimization
Architecture
Technical communication
Problem solving
Collaboration
Software engineering

Benefits

23 days of holiday
Health insurance
Dental insurance
Life insurance
Short-term disability cover
Long-term disability cover
Pension contributions
Public transport pass subsidy
Gym membership subsidy
Hybrid working

Visa sponsorship

Not detected in the job text

Keywords

Java
Distributed Systems
Aeron Sequencer
State Machine Replication
Messaging Protocols
Performance Engineering
Profiling
Benchmarking
FIX
ITCH
OMS
EMS
Gradle
GitHub Actions
AWS
GCP
Azure
Kubernetes
Financial Technology
Capital Markets
Software Engineering
System Architecture
Deterministic Simulation Testing
Property-based Testing
Low-latency
High-throughput
Cloud Platforms
Container Orchestration
Consulting
Product Engineering

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