Senior Backend Engineer - Node.js/TypeScript, Equity & Growth

Blinq; Sydney; On-site; AUD 120,000 - 160,000; Full time

Benefits offered by this job

Equity

Growth path

20 days annual leave

Team lunches

Catered lunches

Job summary

Blinq, the AI contacts app, seeks a senior backend engineer in Sydney to design, build, and operate scalable backend services using Node.js and TypeScript. You’ll own end-to-end features, drive architectural decisions, and collaborate with product, design, and data teams to deliver high-impact, observable systems.

You will contribute to AI-assisted workflows, improve reliability, security, and performance, and work in a hybrid, in-office culture with three days on-site.

Qualifications

• 5+ years of experience building and operating production backend systems, ideally within fast-moving product or startup environments.
• Strong experience with Node.js and TypeScript, including a solid understanding of asynchronous and event-driven architectures
• Strong foundations in API design, data modelling, databases, distributed systems, and backend security
• Experience designing reliable, observable services in a cloud environment; GCP experience is preferred
• A track record of owning complex technical work from problem definition through to production
• Strong product judgment and the ability to balance speed, scalability, quality, and customer impact
• Clear communication skills and a collaborative approach to technical decision-making, code reviews, and mentoring
• Curiosity about AI-native development and experience using AI tools to improve how you design, build, test, or operate software

Responsibilities

• Design, build, and operate scalable backend services and APIs using Node.js and TypeScript
• Own features end-to-end — from technical discovery and data modelling through to rollout, observability, and ongoing improvement
• Build systems that support high-volume, real-time experiences across contact sharing, lead capture, analytics, and third-party integrations
• Improve the reliability, performance, security, and testability of our backend platform
• Make pragmatic architectural decisions, improve core abstractions, and reduce technical debt as the product scales
• Collaborate closely with product, web, mobile, design, and data teams to turn ambiguous problems into simple, high-impact solutions
• Contribute to code reviews, technical planning, and system design, helping other engineers do their best work
• Use and help evolve AI-assisted engineering workflows that improve developer leverage without compromising quality

Skills

Backend systems

Node.js & TypeScript

API design

Cloud (GCP)

Tools

Node.js

TypeScript

APIs

GCP

Job description

Blinq, the AI contacts app, seeks a senior backend engineer in Sydney to design, build, and operate scalable backend services using Node.js and TypeScript. You’ll own end-to-end features, drive architectural decisions, and collaborate with product, design, and data teams to deliver high-impact, observable systems.

You will contribute to AI-assisted workflows, improve reliability, security, and performance, and work in a hybrid, in-office culture with three days on-site.