Senior Backend Engineer

Blinq

Senior Backend Engineer at Blinq designing, building, and operating core services for an AI contacts app. Collaborating with different teams to solve complex backend system challenges.

Posted 7/30/2026full-timeSydney • 🇦🇺 AustraliaSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and operating scalable backend services using Node.js and TypeScript, with a strong focus on API design, data modeling, and backend security. Proven ability to lead complex technical projects from inception to production while collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Node.jsTypeScriptAPI DesignCloud Environment (GCP)Asynchronous Architecture

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend DevelopmentData ModelingDistributed SystemsBackend SecurityObservabilityTechnical DiscoveryPerformance ImprovementTestabilityArchitectural Decision-MakingAI Tools

Soft Skills

Clear CommunicationCollaborationMentoringProduct JudgmentCuriosity

Industry Keywords

High-Volume SystemsReal-Time ExperiencesTechnical DebtCode ReviewsTechnical Planning

Tech Stack

Tools & technologies

CloudDistributed SystemsGoogle Cloud PlatformJavaScriptNode.jsTypeScript

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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

Benefits

Comp & perks

Equity and ownership. We're building something massive and we want you to share in the upside. Genuinely.
Competitive salary and a real growth path. As Blinq grows, your role and compensation grow with it.
Time to switch off. 20 days of annual leave plus a flexible policy for everything life throws at you beyond that.
Good times, often. Team lunches, padel, games nights, Barry's sessions. We like hanging out and it shows.
Regular catered lunch at some of our offices, plus an always-stocked snack bar.