System Software Engineer (OT/IoT)

Assurity Trusted Solutions Pte Ltd; Singapore; Hybrid; SGD 120,000 - 160,000; Full time

Benefits offered by this job

Flexible work arrangements

Market-competitive benefits

Job summary

Assurity Trusted Solutions Pte Ltd is seeking a multidisciplinary System Engineer with strong OT/IoT foundations and software development experience. You will design, integrate, and deploy complex, secure, cloud-enabled systems across their full lifecycle, collaborating with stakeholders to ensure reliability and performance.

Responsibilities include interfacing hardware with software, implementing CI/CD pipelines, and contributing to platform architecture and governance.

Qualifications

• 8+ years of experience in web and backend development with cloud exposure.
• Hands-on experience with cloud platforms for IoT workloads, deployment, and scaling.
• Proficiency in Java or C++, plus scripting (Python/JavaScript) and frontend frameworks (React/Angular).
• Experience interfacing hardware with software via serial, GPIO, USB, or OT protocols (OPCUA/Modbus/Bacnet).

Responsibilities

• Assist in designing, evaluating, operating, and maintaining devices and platform infrastructure.
• Connect and integrate systems and IoT devices into a unified solution using cloud technologies.
• Develop, refine, and maintain web and cloud-native applications with security in mind.

Skills

Java

C++

Python

JavaScript

React

Angular

Cloud platforms

Tools

AWS

Azure

Google Cloud

Job description

Assurity Trusted Solutions (ATS) is a wholly owned subsidiary of the Government Technology Agency (GovTech). As a Trusted Partner over the last decade, ATS offers a comprehensive suite of products and services ranging from infrastructure and operational services, authentication services, governance and assurance services, as well as managed processes. In a dynamic digital and cyber landscape, where trust & collaboration are key, ATS continues to drive mutually beneficial business outcomes through collaboration with GovTech, government agencies, and commercial partners to mitigate cyber risks and bolster security postures.

We are seeking a multidisciplinary engineer with System Engineering foundations in Operational Technology (OT), Internet of Things (IoT), — complemented by solid experience in software development. This role operates at the intersection of engineering, software, and operations, driving the design, integration, and secure deployment of complex, connected systems. The successful candidate will ensure that solutions are architected with rigor, developed with agility, and delivered with purpose across their full lifecycle — from concept and prototyping to production rollout and continuous improvement. As part of a cross-functional ecosystem, the System Engineer will collaborate closely with stakeholders across technical, operational, and management domains to deliver resilient, data-driven, and cyber-secure platforms that enable smarter, safer, and more efficient environments. The role also involves contributing to system architecture development, CI/CD automation, and product roadmap execution, ensuring that innovation, reliability, and stakeholder alignment remain at the core of every deployment.

Responsibilities

• Assist in designing, evaluating, operating, and maintaining devices and platform infrastructure.
• Connect and integrate systems, applications, and IoT devices into a unified solution, leveraging cloud technologies for scalability and flexibility.
• Integrate hardware with software platforms via appropriate interfaces (serial, USB, GPIO, network) and OT protocols such as OPCUA, Modbus, and Bacnet
• Perform basic wiring, calibration, and troubleshooting of electronic devices.
• Create and maintain IoT and application setups for secure, scalable cloud services (e.g., AWS, Azure, Google Cloud).
• Optimize application and backend services to ensure responsive performance under load and high availability.
• Implement end-to-end data protection (encryption at rest and in transit) and adhere to cloud security best practices.
• Develop, refine, and maintain user input workflows for clarity and ease of use across web and mobile applications.
• Update backend logic for accurate and standardized reporting in cloud-based environments.
• Contribute to the development of web-based applications and cloud-native services, focusing on scalability and performance.
• Implement CI/CD pipelines and monitoring for reliable deployments, continuous integration, and operational stability in cloud environments.
• Integrate machine learning models into cloud services for automated verification, quality assurance, and predictive analytics.
• Add multimodal guidance (e.g., voice prompts, instructional videos) to improve system usability across platforms.
• Ensure compliance with relevant governance guidelines, standards, and cloud-specific regulations.
• Support, maintain, and document all software libraries and hardware databases in cloud environments.
• Assist in preparing tender specifications, supporting evaluation processes, and ensuring cloud technologies are leveraged effectively.

Requirements

• Minimum 8 years of working experience in web and backend application development, with exposure to cloud technologies.
• Hands-on experience with cloud platforms for IoT workloads, deployment, and scaling (e.g. AWS, Azure).
• Proficiency in at least one object‑oriented programming (OOP) language such as Java or C++, another scripting language (e.g. Python, JavaScript) and frontend frameworks (e.g. React, Angular).
• Strong skills in application design, implementation, testing, and troubleshooting in cloud‑native environments.
• Ability to interface hardware with software platforms via serial, GPIO, USB, network connections, and OT protocols such as OPCUA, Modbus, and Bacnet.
• Understanding of user‑centric design principles and ability to refine input workflows and multimodal guidance.
• Familiarity with cloud application architecture, microservices, and serverless computing.
• Familiarity with basic electronics (wiring, power management, troubleshooting circuits).

Benefits

We are an equal opportunity employer committed to fostering an inclusive workplace that values diverse voices and perspectives, as we believe it is key to innovation.

Our employee benefits are based on a total rewards approach, offering a holistic and market-competitive suite of perks.

We champion flexible work arrangements (subject to your job role) and trust you to manage your time to deliver your best.