Sr. Application Support Engineer at OSTTRA – Tokyo | Jobyssey

The Role: Sr. Application Support Engineer
The Team: Application Support is a global team that provides technical support across the suite of OSTTRA products. The application support team works closely with a highly competent Client Services team and the core project teams to resolve client issues whilst continually improving our platforms. Our work helps ensure that OSTTRA provides a high-quality service and maintains client satisfaction.
The Impact: Together, we build, support, protect and manage high-performance, resilient platforms that process more than 100 million messages a day. Our services are vital to automated trade processing around the globe, managing peak volumes and working with our customers and regulators to ensure the efficient settlement of trades and effective operation of global capital markets.
What’s in it for you:
OSTTRA is seeking an Application Support professional to join the Application Support Team. The role encompasses 2nd line technical application support as well as integration support for our Trade Processing applications. This person will report directly to the regional support manager and work closely with an experienced global team to contribute to the quality of our support.
You will have 10-15 years’ experience of Sr. Application Support & Project Management to meet the needs of our expanding portfolio of Financial Services clients.
This role presents an excellent opportunity to be part of an agile team based out of Japan, collaborating with colleagues across multiple regions globally, with a strong focus on delivering value through self-service.
Responsibilities:

Your duties will include providing technical L2 and L3 support to both internal and external customers across our full suite of OTC Derivative products and FX for post-trade confirmation processing.

You will need to demonstrate excellent communication skills and have a natural ability to learn with a keen interest in technology. You must be a team player and enjoy working in a high-performance collaborative global group.

The successful candidate will need to be able to apply strong technical skills and good business knowledge, together with investigative techniques and problem-solving skills to identify and resolve issues in a timely and high-quality manner.

Liaising with other team members, Product, Development and particularly the infrastructure teams as required for 3rd line escalation. Technical advisory will be required at times by Product and business or clients for solution delivery.

Working directly with clients, to understand and resolve issues and liaising with delivery teams to ensure readiness for new platform releases. Based in our Gurgaon office, you will be responsible for handling escalations, identifying and communicating technical resolutions in English.

You will also work on initiatives around platform industrialization, proactive application health monitoring and reporting.

What We’re Looking For:

University graduate or equivalent with background of bachelor’s in computer science.

Ability to read and trace Java, C++ and/or scripting languages.

Possess the understanding of PAAS and implementation with OpenShift.

Experience or having high motivation to pick up cloud implementation on AWS.

Experience in handling client issues and expectation management.

Experience in Application Support, software development and deployment (SDLC).

Good Unix skills, including scripting experience.

Experience of XML and XSLT.

Experience of databases including SQL scripting, preferably but not limited to Oracle.

Good understanding of messaging platforms and protocols like FIX and IBM MQ.

Understanding of networking principles, its practical uses and basic troubleshooting.

Experience in encrypted connectivity channels utilizing SSL and TLS.

Have experience of working in the Finance Industry.

Knowledge of the Financial OTC Derivative and FX products.

Good understanding of Application Support processes.

Awareness of Derivatives products and post trade processing (desirable).

Be flexible regarding hours including weekends and public holidays.

Knowledge of financial protocols like FIX, FPmL, TOF etc

Ability to understand Application architecture, and able to effectively navigate to the problem area.

Ability to apply analytic methodology, such as trending, distribution etc., to get insight from application data to help troubleshooting.

Ability to understand business workflow and tie to technical implementation.

The location: Gurgaon,India
Our Benefits: Global vision, local impact
At OSTTRA, our benefits philosophy offers a market-competitive package that reflects our position as an industry leader. We want to ensure you feel valued, secure, and empowered wherever you are in the world.Our approach is built on three core pillars:

Global foundations: We provide a baseline of excellence across all our offices, focusing on comprehensive Health & Wellness, Financial Security, and Work-Life Balance. No matter your location, you are part of a culture that prioritizes your holistic well-being.

Locally tailored: We benchmark in each market to ensure our packages are genuinely competitive where you live and work.

Flexibility and growth: We empower you to work in a way that suits your life. This includes a hybrid working model, generous leave policies, and a commitment to your continuous professional development.

The Trust employee ownership plan
Every employee at OSTTRA is an owner, and a member of The Trust, our employee ownership programme. Our distinct culture encourages colleagues to think and act like owners and raise the bar constantly. This plan reflects our belief that when we work together to build a stronger, more valuable organisation, then all colleagues should benefit from the value we create.
About OSTTRA
We build and operate the infrastructure that the world’s post-trade financial system runs on. Launched in 2021, we have unified more than 20 years of heritage and expertise from four industry leaders into a single, integrated business.
Today,we operate a trusted network that connects thousands of market participants to streamline end-to-end workflows, from trade capture through portfolio optimisation.We translate industry change into workable process, engineering an open, intelligent ecosystem that removes friction and reduces risk for the global markets.Our distinct ownership culture is underpinned by four behaviours: boldness, curiosity, accountability, and collaboration. In 2025 we were acquired by KKR, one of the world’s most successful private equity firms, and are on a journey of growth and impact.
Joining our team now is a unique opportunity - you will help to shape the next generation of post-trade, transform shared infrastructure into shared benefit, and accelerate your own career. Learn more at www.osttra.com.
Equal opportunity employer statement at OSTTRA
We are committed to fostering a connected and engaged workplace where all colleagues have access to opportunities based on their skills, experience, and contributions. Our hiring practices emphasise fairness, transparency, and merit, ensuring that we attract and retain the best talent. By valuing different perspectives and promoting a culture of respect and collaboration, we drive and operate the infrastructure that the world’s post-trade financial system runs on

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