Helius Technologies Pte Ltd
Senior Fullstack Developer
Skills
2 months ago
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Important information
Contract type:
Freelance / Contract
Location:
Central Region, Malawi
Work mode:
Onsite
Published on:
4 September 2026
What they need
We are seeking an experienced software developer responsible for designing and delivering scalable, secure, and business-aligned technology solutions. The scope includes architecture planning, solution design, prototyping, and supporting delivery teams throughout the development lifecycle. The successful candidate will have a strong background in Java technologies and AWS, with expertise in application architecture and development, SQL query fine tuning, troubleshooting, and problem-solving.
Key Responsibilities
- Provide hands-on support including prototyping and coding.
- Provide hands-on technical leadership, including UI design, prototyping, development, code reviews, and implementation of React-based applications.
- Build proof-of-concepts (POCs).
- Build Java and Web applications on AWS and On premises.
- Support build, deployment, and testing phases
- Ensure compliance with security and best practices
- Translate business requirements into technical solutions.
- Conduct performance and capacity assessments.
- Deep dive and solve complex engineering problems.
- Develop and maintain expertise in Java technologies (e.g., Struts, Spring Boot / Spring Batch), Tomcat, Oracle 19c, React JS and AWS services (e.g., EC2, S3, RDS, EKS, ECS, CloudWatch).
- Design, develop, and maintain scalable, responsive, and high-performance web applications using React.js, TypeScript, and modern JavaScript frameworks.
- Develop reusable UI components, frontend libraries, and design patterns to improve development efficiency and consistency.
- Integrate frontend applications with RESTful APIs, microservices, and backend services while ensuring seamless user experiences.
- Deep dive into and resolve complex UI, integration, and production issues.
- Collaborate closely with backend engineers, architects, UX/UI designers, product owners, and stakeholders.
- Develop and maintain expertise in React.js, React Native, TypeScript, OAuth2/OIDC, JavaScript (ES6+), HTML5, CSS3, Redux, Next.js, API Gateway, REST APIs, Micro Frontends, and AWS-hosted web applications.
- Expertise in React Hooks, Context API, and custom hooks
- Support application build, deployment, testing, and release activities through CI/CD pipelines.
- Ensure compliance with security, accessibility, performance, and frontend development best practices.
Preferred Qualifications
- Bachelor’s degree in computer science / engineering or its equivalent
- Minimum 6-8 years of relevant experience in building and managing critical applications.
- Strong knowledge and experience in Java 8 and above.
- Strong knowledge in Spring Framework, Spring Boot, Spring Batch and Spring AI.
- Strong understanding of enterprise integration patterns and distributed systems architecture.
- Experience in Microservices Architecture and domain-driven service design.
- Strong experience designing and developing RESTful APIs and enterprise integration solutions.
- Strong experience designing, deploying, and supporting applications on AWS Cloud.
- Expertise with AWS services including (EC2, S3, RDS, ECS, EKS, CloudWatch).
- Strong understanding of API Gateway technologies.
- Experience with containerization, Kubernetes, Docker, and orchestration platforms.
- Experience in supporting CII system and mission-critical cloud environments.
- Strong experience implementing CI/CD pipelines and release automation.
- Experience with DevOps and DevSecOps practices.
- Strong hands-on experience with JUNIT, KARATE Framework, Automate API testing, Integration Testing, & Test automation framework.
- Experience implementing code quality, security scanning, and deployment controls within delivery pipelines.
- Strong experience in supporting critical application workloads on AWS Cloud.
- Strong hands-on experience in React.js, React Native, TypeScript, JavaScript (ES6+), and modern frontend development practices.
- Experience with state management frameworks such as Redux Toolkit, Context API, or similar technologies.
- Strong understanding of REST APIs, microservices-based architectures, and frontend-backend integration patterns.
- Experience with Next.js, Server-Side Rendering (SSR), and frontend performance optimization techniques.
- Proficiency in HTML5, CSS3, responsive design, cross-browser compatibility, and accessibility standards.
- Experience with automated testing frameworks such as Jest, React Testing Library, Cypress, or Playwright.
- Strong experience supporting and deploying applications on AWS Cloud environments.
- Hands-on, detailed and a team player exemplifying the “can-do” attitude.
- AWS Certification – Solution Architect Associate and Developer Associate
- Good analytical and problem-solving skills.
- Good oral and written communication skills. Able to effectively communicate with technical leaders.
- Good team player with positive attitude.
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