Senior Java /.NET Solution Architect & Technical Lead

rapsys technologies pte. ltd.; Singapore; On-site; SGD 180,000 - 240,000; Full time

Job summary

rapsys technologies pte. ltd. seeks a Senior Solution Architect/Technical Lead to drive architecture and delivery of critical enterprise apps in regulated settings. You will steer AI-assisted development, cloud-native modernization, and secure DevSecOps practices while guiding high-performing teams.

Expect strong Java/.NET experience, modern cloud architectures, and hands-on coding in complex government projects. Leadership, governance, and engineering excellence are essential for success.

Qualifications

• Bachelor’s degree in Computer Science, Engineering or related discipline.
• 12–18+ years of enterprise software engineering experience.
• 5+ years as Solution Architect or Technical Lead; hands-on coding.
• Experience leading enterprise-scale government or regulated industry projects.
• Experience delivering Agile/Scrum teams; secure software practices.

Responsibilities

• Lead design and delivery of mission-critical enterprise applications.
• Drive architecture, governance, and AI-assisted software engineering.
• Promote cloud-native modernization, DevSecOps, and engineering excellence.
• Direct high-performing delivery teams in highly regulated environments.

Skills

Hands-on coding

Leadership

Agile/Scrum delivery

Enterprise-scale delivery

Governance & architecture

Education

Bachelor’s degree in Computer Science, Engineering or related discipline

12–18+ years of enterprise software engineering experience

5+ years as Solution Architect or Technical Lead

Tools

Azure Solutions Architect Expert

Azure Developer Associate

Azure AI Engineer Associate

Azure DevOps Engineer Expert

AWS Solutions Architect Professional

AWS Developer

Red Hat OpenShift

CKA

CKAD

KCNA

TOGAF

Zachman

ArchiMate

CISSP

CCSK

CCSP

Certified DevSecOps Professional

GIAC Cloud Security

Job description

Role Summary

We are seeking an experienced Senior Solution Architect / Technical Lead to lead the design and delivery of mission-critical enterprise applications. The successful candidate will drive architecture, technical governance, AI-assisted software engineering, cloud-native modernization, DevSecOps adoption, and engineering excellence while leading high-performing delivery teams.

The role requires strong experience in Java and/or Microsoft .NET ecosystems, modern cloud-native architectures, secure software engineering, AI-powered development tools, and delivery within highly regulated government environment.

Mandatory Qualifications

• Bachelor’s degree in Computer Science, Engineering or related discipline.
• 12–18+ years of enterprise software engineering experience.
• 5+ years as Solution Architect or Technical Lead.
• Experience leading enterprise-scale government or regulated industry projects.
• Hands-on coding capability (not purely managerial).
• Experience leading Agile/Scrum delivery teams.

Preferred Certifications

Microsoft

• Azure Solutions Architect Expert
• Azure Developer Associate
• Azure AI Engineer Associate
• Azure DevOps Engineer Expert

Cloud

• AWS Solutions Architect Professional
• AWS Developer
• Red Hat OpenShift
• Certified Kubernetes Administrator (CKA)
• Certified Kubernetes Application Developer (CKAD)
• Kubernetes and Cloud Native Associate (KCNA)

Security

• CISSP
• CCSK
• CCSP
• Certified DevSecOps Professional
• GIAC Cloud Security

Architecture

• TOGAF
• Zachman
• ArchiMate

Nice-to-Have Skills

• Platform Engineering
• Internal Developer Platforms (IDP)
• Backstage
• Crossplane
• ArgoCD
• FluxCD
• Dapr
• Istio
• Kong Gateway
• NGINX
• Redis Enterprise
• Apache Ignite
• AI Coding Governance
• FinOps
• Green Software Engineering
• Chaos Engineering
• Performance Engineering
• Digital Twin architectures
• Low-code platforms (Power Platform, Mendix, OutSystems)
• Site Reliability Engineering (SRE)