Senior Software Engineer (Android & Full-Stack Web)

Assuritz Infosec; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Assuritz Infosec is seeking a versatile Senior Software Engineer with deep expertise in native Android and full-stack web development. You will own the software development lifecycle, from gathering requirements to delivering cloud-backed applications that bridge mobile and web ecosystems.

Collaborate with product, design, and infrastructure teams to build secure, highly available systems. You will lead Android and web initiatives, mentor engineers, enforce code quality, CI/CD, testing, and

Qualifications

• 5+ years of professional software engineering experience.
• 3+ years in a senior or lead technical role spanning both Android and web development.
• Proficiency in native Android development and web technologies.
• Experience with secure RESTful APIs and cloud/hybrid databases.
• Strong focus on software architecture and scalable systems.

Responsibilities

• Lead the development, optimization, and lifecycle of native Android apps.
• Architect and deliver responsive web applications using modern frameworks.
• Bridge mobile and web with secure cloud/hybrid databases and RESTful APIs.
• Champion security, CI/CD pipelines, and automated testing.
• Mentor engineers and contribute to technical roadmaps with product teams.

Skills

Android development

Kotlin/Java

Web development

REST APIs

CI/CD

Cloud

Tools

React/Next.js

.NET/Java

MS SQL

OAuth/OIDC

CI/CD tooling

Job description

About the Role

We are seeking a versatile and driven Senior Software Engineer with deep expertise in both native Android and full-stack web development.

In this role, you will own the software development lifecycle—from gathering requirements and designing solutions to developing, optimizing, maintaining, and providing ongoing support for robust, cloud-backed applications that bridge mobile and web ecosystems.

Working closely with cross-functional product, design, and infrastructure teams, you will deliver secure, highly available, and enterprise-grade systems that provide exceptional user experiences.

Key Responsibilities

• Android Engineering: Lead the development, optimization, and lifecycle management of native Android applications, ensuring seamless cloud synchronization and robust offline-first capabilities.
• Web Engineering: Architect and deliver responsive, high-performance web applications using modern frameworks and technologies.
• System Integration: Bridge mobile and web ecosystems with secure cloud/hybrid databases, authentication frameworks (OAuth/OIDC), and scalable RESTful APIs.
• Performance & Security: Champion industry best practices for application security, data encryption, automated CI/CD pipelines, and comprehensive automated testing.
• Technical Leadership: Mentor junior and mid-level engineers, conduct rigorous code reviews, drive architectural decisions, and collaborate with product managers to shape technical roadmaps.

Experience

• 5+ years of professional software engineering experience.
• 3+ years in a senior or lead technical role spanning both Android and web development.

Technical Expertise

• Mobile: Deep, production-level proficiency in native Android development (Android SDK, Kotlin, Java, MVVM/Clean Architecture, SQLite, and offline data synchronization).
• Web & Full-Stack: Strong command of modern web technologies (HTML5, CSS3, JavaScript/TypeScript, React/Next.js, .NET/Java, or equivalent modern frontend and backend development frameworks).
• APIs & Integration: Proven experience designing and building secure RESTful APIs and modern integration solutions.
• Databases: Solid expertise in relational databases (especially MS SQL), focusing on performance optimization, scalability, and data security.
• DevOps & Cloud: Hands-on experience architecting cloud/hybrid solutions and managing automated CI/CD pipelines.
• UI/UX Acumen: A working understanding of UI/UX principles to effectively translate design concepts into intuitive user experiences.

Engineering Standards & Collaboration

• Code Quality: Demonstrated commitment to writing clean, maintainable code backed by unit, integration, and end-to-end testing strategies.
• Communication: Excellent interpersonal skills with a proven track record of leading technical projects and collaborating effectively in Agile/Scrum cross-functional environments.