Senior Software Engineer - Core Systems & Integrations

Optimum Solutions (Singapore) Pte Ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Optimum Solutions (Singapore) Pte Ltd. is seeking a Senior Software Engineer to lead end-to-end development for mission-critical financial platforms in Singapore.

You will partner with architects, PMs, and business stakeholders to design, build, and deploy scalable solutions linking backend processing with modern digital channels. You will drive system integration, testing, and production release activities, with strong emphasis on code quality, governance, and secure software practices.

Qualifications

• Bachelor's degree in Computer Science or related field required.
• 6+ years of relevant experience, preferably in a Finance Institution.
• Hands-on engineering on IBM AS400 / iSeries with RPG, RPGLE, CLLE.
• Experience with DB2, Oracle SQL, MS SQL Server, or MongoDB.
• Experience with Java, RESTful APIs, Node.js or React JS.
• Experience in banking/regulatory environments.
• Experience with Waterfall and Agile delivery.

Responsibilities

• Lead end-to-end development and delivery for financial platforms.
• Design, develop, and integrate systems with key stakeholders.
• Drive testing, SIT/UAT, and production release cutovers.
• Review code and ensure adherence to security standards.
• Provide technical guidance to delivery managers and teams.

Skills

Software engineering

Java

Node.js

React JS

RESTful APIs

SQL databases

Agile & Waterfall

Communication

Problem solving

Team collaboration

Education

Bachelor's degree in Computer Science or related field

Tools

Aldon Lifecycle Manager

Job description

Optimum Solutions (Singapore) Pte Ltd. is seeking a Senior Software Engineer to lead end-to-end development for mission-critical financial platforms in Singapore.

You will partner with architects, PMs, and business stakeholders to design, build, and deploy scalable solutions linking backend processing with modern digital channels. You will drive system integration, testing, and production release activities, with strong emphasis on code quality, governance, and secure software practices.