Senior Software Engineer
Instant
Instant is looking for a Senior Software Engineer to help expand our engineering team and build and scale Instant AI, a fast growing product already driving meaningful revenue impact for leading ecommerce brands. You’ll play a critical role in designing, implementing, and shipping backend focused or full stack features that power intelligent, self serve experiences and make advanced AI driven marketing accessible to any brand. As part of a lean, high impact team, you’ll work cross functionally and lead projects end to end, from ideation through to production.
Why Instant:
Instant is the world’s first AI-powered marketing manager built for ecommerce. Today, we’re quickly becoming the most important piece of technology to help the fastest growing brands on the planet to significantly scale their revenue - on autopilot. We're reinventing how brands bring their lost shoppers back to purchase through AI-powered email and SMS retention marketing. Our ambition is to be just as important and essential as Meta when it comes to helping an ecommerce brand scale.
This is a rare chance to help build a generational company at a true inflection point. Today, we service over 1,000+ of the worlds fastest growing brands like ThirdLove, David Protein, July Luggage and Meshki, with Instant’s products generating over 30% of our customers annualised revenue. We have strong product-market fit, adding more than $1M in ARR every month, 100M’s of shoppers interacting with Instant everyday, and the backing of world-class investors with over $35M raised from Blackbird, Hummingbird and Hubspot. We’re scaling fast.
The work is ambitious, the talent bar is high, and the opportunity for growth - personal, professional, and financial - is unmatched. Instant would be the fastest moving company you’d ever be apart of in your career. So, if you consider yourself ambitious, we invite you to join us!
What You Will Bring to the Role
- Passion for working in a fast paced, high growth startup environment.
- Experience with high-volume analytics systems, ideally using ClickHouse or similar OLAP databases (like Pinot, Druid or StarRocks). Background in large-scale, high-throughput systems or OLAP-style platforms is a strong plus.
- Experience designing RESTful APIs with a solid understanding of best practices.
- Expertise in Serverless and cloud technologies like AWS (Lambda, DynamoDB, API Gateway, ECS), Google Cloud or Azure.
- A strong grasp of software engineering principles, common design patterns and agile practices.
- A user focused mindset with a drive to build scalable, extensible and robust systems.
- A product focused mindset with a love for solving real user problems with innovative solutions.
Bonus, if you have:
- Experience building and scaling SaaS products or working in eCommerce
- Strong knowledge of TypeScript across both frontend and backend development
- Proficiency in React or experience with similar frameworks like Angular or Vue
In your first 30 days with Instant, you will:
- Conceptualise, implement and ship at least one impactful feature that delivers significant value to our customers.
- Be involved in product decision making from the ground up. You will provide design, implementation and execution input throughout the product lifecycle.
- Enhance our existing products by building new functionality, improving performance and refining usability.
- Deeply understand our customers, their pain points and how Instant’s mission aligns with solving them.
We offer a comprehensive benefits package including employee equity, competitive compensation, $1K annual wellness stipend and daily team lunch. This role is hybrid, based in Surry Hills, 3 days per week (Tuesday, Wednesday, Thursday).




