Senior Full Stack Software Engineer

Formulatrix Indonesia; Purworejo ꦥꦸꦂꦮꦉꦗ; On-site; USD 15.000 - 25.000; Full time

Job summary

A leading company in Indonesia is seeking a skilled Software Engineer to define the technical vision for a data-intensive SaaS product. The role involves architecting and developing both backend and frontend systems while ensuring high software quality and compliance with regulations. This position requires strong leadership and collaboration skills as well as a solid background in software development.

Qualifications

• At least 4 years of experience in backend development with C# or Java.
• Hands-on experience in frontend development using React.js.

Responsibilities

• Define and drive the technical vision for a cloud-native SaaS product.
• Architect and develop a distributed back-end system.
• Lead the development of core domain algorithms and services.

Skills

Leadership

Logical Thinking

Attention to Detail

Proactive

Team Player

Education

Bachelor's Degree in Computer Science

Tools

C#

Java

React.js

SQL

Job description

Responsibilities

JOB RESPONSIBILITIES:

• Define and drive the technical vision for a data-intensive, cloud-native SaaS product, translating strategic goals into actionable architecture and a clear delivery roadmap.
• Architect, develop, and evolve a distributed back-end system (currently in C#/.NET) and a modern single-page front end (currently in React.js), while continuously evaluating and integrating alternative technologies where they provide meaningful advantages.
• Design robust data-ingestion and processing pipelines, integrate multiple external APIs and batch feeds with automated validation, reconciliation, and alerting to ensure data accuracy and freshness.
• Lead the development of core domain algorithms and services (e.g., pricing, optimization, search, geospatial), focusing on deterministic correctness, low-latency performance, and horizontal scalability.
• Establish and promote engineering best practices such as clean architecture, SOLID principles, test-driven development, code reviews, and secure coding standards to maintain high software quality.
• Own DevOps and SRE disciplines, including containerization, infrastructure-as-code, CI/CD automation, observability, performance tuning, and post-incident reviews to support SLIs/SLOs and zero-downtime deployments.
• Ensure compliance with security and regulatory requirements (e.g., data privacy laws, payment or industry-specific standards), embedding them throughout the software development lifecycle and cloud infrastructure.
• Collaborate cross-functionally with Product, UX, Data, and Operations teams to refine requirements, align on priorities, communicate risks, and ensure delivery success.
• Continuously explore and evaluate emerging technologies and practices—such as event-driven architectures, AI-driven optimization, and serverless components—and drive consensus on strategic adoption to future-proof the platform.
  
  

Requirements

Requirements

• Candidate must possess at least Bachelor's Degree in Computer Science, Information Technology, Electronic Engineering, or equivalent professional experience in software development.
• Have experience with a complete software development life cycle.
• At least 4 years of solid experience in backend development with C# or Java, alongside hands-on experience in frontend development using React.js
• Strong SQL database skills.
• Demonstrate experience with system architecture review, OOP, and software programming in a team environment.
• Have a “Can-do” attitude with strong logical thinking and attention to detail.
• Good grasp of programming best practices and committed to writing high-quality, high-performance code.
• Proactive, highly motivated, and a strong team player with a good ability to multi-task and re-prioritize as necessary.
• Demonstrate leadership, project management, and mentor experience.
• Excellent communication skills in English both oral and written.
• Applicants must be willing to work in Salatiga or Semarang.