Total 4 job vacancies by Toss-ex Pr Pte. Ltd.

Role

Must Have

IT/OT Onsite Engineer

• Experience in integrating IT networks with OT systems.
• Working knowledge with handling OT assets - HMIs, PLCs, Scada, Sensors, Inspection machines (CMM, CNCs), 3D printers etc
• Experience in updating the required details in the PLC configuration, IP data
• Asset inventory data collection/Identify risks in advance and highlight.
• Familiarity with secure protocols (OPC-UA, Modbus TCP/IP, Ethernet/IP, SMB).
• Network design and implementation, including LAN/WAN, VLANs, and routing protocols.Good-To-Have
• Desired experience: 10+ years in IT/OT environments.
• Proficiency in configuring firewalls-checkpoint, SD WAN, switches, and routers (e.g., Cisco.
• Firewall rule configuration. Network Security Configuration and micro segmentation using VLAN, Switches and Network Taps config
• Certification:
• CCNA/CCNP (Cisco Certified Network Associate/Professional).
• CompTIA Network+ or equivalent.

Role Overview

We are seeking a skilled Software Engineer with strong experience in Java-based application development. The ideal candidate should have hands-on expertise in Spring Boot and cloud technologies, with the ability to deliver high-quality, scalable solutions in a dynamic environment.

Key Responsibilities

Design, develop, and maintain scalable backend applications using Java and Spring Boot

Collaborate with cross-functional teams to define, design, and deliver new features

Deploy and manage applications on cloud platforms (AI Cloud / relevant cloud environments)

Troubleshoot, debug, and optimize application performance

Ensure best practices in coding standards, testing, and deployment

Participate in code reviews and contribute to continuous improvement

Required Skills & Experience

Overall IT Experience: At least 8 yrs

Java: 2–5 years of hands-on experience

Spring Boot: 2–5 years of experience in building microservices

AI Cloud / Cloud Technologies: 2–5 years of relevant experience

Bilingual Communication Skills: Ability to communicate effectively in two languages

Strong understanding of RESTful APIs and microservices architecture

Familiarity with version control systems (e.g., Git)

Preferred Profile

Experience working in onsite project environments

Good problem-solving and analytical skills

Strong communication and collaboration abilities

This role goes beyond implementation — the successful candidate will be responsible for technical design, solution architecture, and producing technical/design specifications, while remaining actively involved in coding and delivery.

You will participate across the full SDLC, working on enterprise systems deployed both on-premise and in the cloud, and provide technical guidance to other developers.

Key Responsibilities

Technical & Development

Design, develop, and maintain enterprise-grade applications using C#, ASP.NET Core (MVC).

Translate business and functional requirements into technical and design specifications (logical and physical).

Design and implement RESTful APIs and backend services using ASP.NET Core.Ensure code quality, performance, security, and scalability through hands-on development and reviews.

Perform troubleshooting, root-cause analysis, and continuous system improvements.

Technical Leadership

Act as a technical point of reference for the team.

Review designs and code, and provide clear technical direction.

Mentor junior developers and guide best practices.

Support estimation, impact analysis, and technical decision-making.

Collaborate closely with BA, QA, infrastructure, and stakeholders.SDLC & Delivery

Participate actively across the full SDLC: analysis, design, development, testing, deployment, and support.
Requirements

Education & Experience

Bachelor’s Degree in Computer Science, IT, or equivalent.

5+ years of hands-on .NET development experience.

Proven experience delivering multiple full project lifecycles.

Prior experience acting as a Senior Developer, Lead Developer, or Technical Lead is highly preferred.

Technical Skills – Must Have

Strong proficiency in C# and ASP.NET Core (MVC).

Solid understanding of OOP principles and design patterns.

Hands-on experience designing and building RESTful APIs.

Experience producing technical and design specifications.

Strong SQL skills and understanding of database design.

Experience working in enterprise systems (on-prem and/or cloud).

Good to Have

Cloud experience (Azure or AWS).

Front-end integration experience (React.js, Angular, or similar).

CI/CD pipelines and DevOps practices.

Microservices or distributed system exposure.

Soft Skills

Strong communication and stakeholder-management skills.

Ability to explain technical concepts clearly.

Comfortable balancing hands-on coding with technical leadership.

•Experience in Core Java, Spring MVC, Spring Batch, Oracle DB, Oracle Weblogic, SRS. Must have an understanding of Junit, PMD Tools and SonarCube.

•Familiar with ISO20022 message standards and domestic payment schemes such as MEPS+

•Experience with DevOps Orchestration/Configuration/Continuous Integration Management technologies.

•Excellent communication skills, both verbal and written.

•Prior experience in Production Support area (Incident, Problem management). Able to provide troubleshooting support for the issue related to the PayCIS. 6

•Inquiry / Estimation for specification changes

•Software and/or Hardware upgrade and maintenance

•BCP Support: Planning and execution of BCP activities (including DR Drill).

•Release / Implementation Support- Should be able to support program release activity of PayCIS and other projects related to PayCIS, and implementation activities in Client's Singapore branch.