Lead Full Stack Developer (SA)

About Chamonix:

Welcome to Chamonix IT Solutions, where innovation meets passion. We're an end-to-end technical services provider committed to helping businesses excel in the digital era. Established in 2010 and recently acquired by Synechron, a global consulting firm delivering industry-leading digital solutions, we’re poised for significant growth! Our local, dedicated team of 150 professionals specialises in guiding our clients through transformative journeys—from groundbreaking digital transformations to comprehensive technical delivery and ongoing managed support. Our dynamic team is the cornerstone of our success, driven by a culture of collaboration, continuous learning, and a relentless pursuit of excellence. At Chamonix, we are not merely keeping pace with the market; we are leading it, delivering exceptional outcomes that empower our clients to stay ahead of the curve. Join us and be part of a journey where the future is shaped daily.

The Role:

We’re looking for a Lead Full Stack Developer to play a pivotal role in delivering high-impact solutions for a key Defence client. This is a hands-on role with architectural influence! You’ll not only design and build across the full stack, but also set direction, refine architecture, and ensure best practices are embedded across the software lifecycle. As the technical lead on the ground, you’ll take ownership of technical delivery, building and integrating robust, secure applications that make a real difference.

What You’Ll Be Doing:

• Writing clean, maintainable code in .NET, C#, Node, SQL, JavaScript/TypeScript, Angular/React, and Azure, ensuring secure and reliable solutions.
• Take ownership of design, coding standards, integration, testing, documentation, and post-go-live support.
• Designing and developing across the full stack: from the data layer, through integrations, to the front-end.
• Work across REST APIs, JSON, and Azure DevOps practices, deploying and managing apps in the cloud.
• Providing technical oversight and mentoring junior engineers, guiding external contractors and vendors, and foster a culture of learning and collaboration.

What You’Ll Bring:

• 7+years full stack development experience across C#, .NET, Node.js, JavaScript/TypeScript.
• Front-end expertise with Angular and/or React (breadth across both preferred).
• Experience working with databases (SQL Server, Oracle, or similar).
• Knowledge of security and identity/access management implementation.
• Proven skills in integrations (REST APIs, JSON).
• Cloud experience in Azure, including app deployment and DevOps practices.
• Familiarity with integration platforms (Boomi or similar).

Note: This role is only open to Australian Citizens due to the required Defence Security Clearance.

What makes us a great place to work?

At Chamonix, we value our culture and believe it is essential to our continued success. We bring together top best technical experts, driving innovation and collaboration at every level. We are proud to foster a supportive, driven, flexible, and inclusive environment that empowers our people to grow, learn, and achieve their personal and professional goals. Recognised as a Great Place to Work 2025/26, and as the #17 Best Workplace™ in Technology by Great Place To Work Australia 2025! We are dedicated to investing in our employees and offer a range of holistic perks and benefits to support individual needs, including:

• Competitive salary package
• Hybrid working model and flexible hours (client dependent)
• Centrally located offices in Sydney CBD
• Extensive professional development opportunities, including annual professional training allowance, Lunch and Learns, paid training and exam leave
• Annual technology allowance
• Mentoring and career progression opportunities
• Discounted health insurance, anniversary gifts, corporate discounts on various products and services
• Employee Recognition Program and Quarterly/Annual Awards celebrating outstanding contributions
• Employee Assistance Program
• An active social club, Friday drinks and various social events scattered throughout the year

https://www.synechron.com/en-au

Www.Chamonix.Com.Au

Next Steps…

We appreciate the time you have taken to apply for a role with us. Chamonix is an equal opportunity employer and welcomes applications from individuals of all backgrounds. Our hiring decisions are based on your experience, skills, enthusiasm, and your future potential in the role. If you feel that you meet some, but not all the requirements above, we still encourage you to apply. If you are invited to an interview, please advise us if you require any reasonable adjustments during the interview process, and what pronouns you use.

Chamonix is committed to creating an inclusive and respectful workplace for all employees. Differences are embraced, contributions are valued, and everyone has a sense of connection and belonging. We welcome people with diverse skills, experiences, perspectives and backgrounds and encourage applications from Aboriginal or Torres Strait Islander peoples, and individuals who may identify as LGBTIQ, with disability, a culturally diverse background, and people of all ages.

Please note that we receive a large number of applications and only shortlisted candidates will be contacted