Find a local API & integrations development in Sydney

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Best API & integrations development freelancers in Sydney

Ranked by verified rating, review volume, proximity and profile completeness. Every freelancer who works on Unjumble has an ABN connected and an Australian mobile.

Showing 8 of 32 freelancers.

Jithin S.

Just joined ABN connected

API & integrations development · Wentworth Point NSW · 11+ yrs

I enjoy Marketing Automation. Currently helping businesses to create their custom Gohighlevel architecture and process. 2nd GHL Certified Admin from AU.

API & Integrations DevelopmentMarketing Strategy & Planning +7
$188–313/hr Indicative. Bids set the price.

Dee R.

LinkedIn connected ABN connected

API & integrations development · Woolloomooloo NSW · 8+ yrs

8+ years digital marketing experience - SEO, SEM, social strategy & content, lead gen, AI readiness & optimisation

Website & UI/UX DesignAdvertising & Marketing Creative +17
$188/hr Indicative. Bids set the price.

Dave B.

ABN connected

API & integrations development · Surry Hills NSW · 15+ yrs

Hello, I'm Dave from Picket: a technical team with a low jargon footprint who help you capture clean, reliable data. We give you the tools to make decisions confidently, target precisely and to uncover opportunities right under your nose.

Analytics & Performance TrackingAPI & Integrations Development

Jerry R.

ABN connected

API & integrations development · Sydney NSW · 10+ yrs

Hi, I'm Jerry. Most freelancers build exactly what you ask for. That’s the problem. You say "I need a CRM" and get one - but leads aren’t dropping because you lack tools. It’s because response time is 3 days, and by then they’ve gone to your competitor. The system was the issue, not the software. I do things differently. Before building anything, I diagnose everything. I map your operations, pinpoint the real constraint, then build an AI-powered system to fix it. I’ve built automations that reply in seconds, content pipelines that run while you sleep, and trackers that flag costly issues early. I’m not a developer - I’m a systems thinker who builds with AI, with 10+ years in operational design. Here's what I do: 1. AI & Automation: systems that run without you 2. Operational Diagnosis: find the bottleneck others miss 3. Workflow Design: less manual work, more leverage

API & Integrations DevelopmentEmail & CRM Strategy +8

Zac K.

ABN connected

API & integrations development · Sydney NSW · 9+ yrs

Founder and CEO of Unjumble. I spent nine years in agency land planning and buying media, digital and offline, across YouTube, Meta and Google Ads. Most recently Group Strategy Director at EssenceMediacom running strategy for KFC and Lion, and before that at PHD and Carat on PepsiCo, Volkswagen, Woolworths and Unilever. Learned a lot about how big brands buy marketing. These days, when I have a moment, I love doing freelance work for Aussie small and medium businesses and helping them grow.

Search Engine Optimisation (SEO)Search Engine Marketing (SEM) +9
$150–225/hr Indicative. Bids set the price.

Aiden L.

Just joined ABN connected

API & integrations development · Sydney NSW · 7+ yrs

Frontend engineer making pixel-accurate interfaces, hand-coded. 7+ years building React, Next.js and TypeScript products from architecting an app from scratch to shipping polished, accessible interfaces end to end. Cofounder who drove a 2 sided marketplace to profitability in 3 months.

Web DevelopmentApp Development +12
$119–150/hr Indicative. Bids set the price.

Sachin A.

Just joined ABN connected

API & integrations development · Sydney NSW · 14+ yrs

Sydney-based data platform consultant & senior Python engineer (14 yrs). I migrate business-critical pipelines to Databricks/Dagster with parallel-run reconciliation proving the new numbers match the old - recently delivering a listed-equities rebalancing platform to production at one of Australia's largest institutional investors. Also: FastAPI/Django REST APIs, matching & scoring engines, AWS/Azure, CI/CD, AI-assisted engineering (Claude Code). Deep financial services domain. Remote across Australia. Clear scoping, honest estimates, on-time delivery. Let's talk.

Back-end DevelopmentAPI & Integrations Development +8
$125–156/hr Indicative. Bids set the price.

Jessie C.

Just joined ABN connected

API & integrations development · Wolli Creek NSW · 9+ yrs

Hi, I’m Jessie, a web developer with 9+ years of experience building websites and web applications. I can help with: • Business and brand websites • WordPress websites • Landing pages • Website redesigns and refreshes • React and Next.js development • Custom website features and integrations • PDF / resource / download centres • Performance optimisation • Existing website fixes and improvements • Ongoing website maintenance I keep communication straightforward, scope the work clearly before development starts, and build things that are easy to maintain after handover.

Web DevelopmentApp Development +6
$88–188/hr Indicative. Bids set the price.

What's the cost of an API & integrations development in Sydney?

$161/hr
$100 Most sit around $161 $225
API & integrations development From 18 freelancer rates updated today

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API & integrations development in Sydney, questions

An integrations gig covers connecting your tools so they share data automatically: your website to your CRM, your store to your accounting software, your booking system to your calendar. The work includes scoping what data moves where and when, the build itself (custom API work, webhooks, or platforms like Zapier and Make), error handling for when a service is down, testing, and documentation so the setup is not a black box.

Zapier, Make and similar tools connect popular apps with no code, are quick to set up, and carry a monthly subscription. They suit simple, low-volume flows like 'new form entry creates a CRM contact'. Custom API development costs more up front but handles complex logic, high volumes and tools without good off-the-shelf connectors, with no per-task fees. A good developer will tell you when the no-code option is genuinely enough.

A single integration between two well-documented tools often takes a few days to 2 weeks. Connecting several systems, building a custom API, or working with tools that have poor or limited APIs takes longer. The hidden time cost is usually access and discovery: getting logins, API keys and a clear picture of your data before any code is written.

Simple ones, yes. Zapier and Make are built for non-developers, and connecting a form to a spreadsheet or an email list is a sensible DIY job. Bring in a developer when money or customer data is involved, when a missed or duplicated record causes real damage, or when a flow needs logic beyond 'when this, do that'. Error handling is the difference between a hobby automation and one you can rely on.

List the tools involved (with the exact plan you're on, because API access often depends on it), describe what should happen in plain English ('when an order is placed in Shopify, create an invoice in Xero'), and note roughly how many records move per day. Admin access or API keys for each tool will be needed. The clearer the brief, the more accurate the bids.

You do. Any code and repositories, the Zapier or Make account, API keys and the developer documentation should all sit in your name at handover, with the freelancer's access removed or downgraded. This matters because integrations need occasional attention, and you want any developer to be able to pick it up later. Make documented handover a stage before final sign off.

Integrations break for boring reasons: an API changes, a password or key expires, a plan limit is hit. Good builds fail loudly rather than silently, so ask your freelancer to include alerts when something stops working, plus a doc covering the common failure points. Agree up front how post-launch fixes are handled, either a short support window in the gig or a small ongoing arrangement.

Integration work in Sydney is usually priced on developer time, and freelance developers typically charge $100 to $225 an hour. A single straightforward connection between two well-documented tools is often a one-to-two week job; multi-system work and custom API builds cost more. Ask for a fixed quote against a written scope where the work is predictable.

Look for someone who has worked with your specific tools and APIs, not just APIs in general; Xero, Shopify and HubSpot each have their own quirks. Good signs in the first conversation: they ask about edge cases, error handling and data volumes before quoting. Check the gig includes documentation, and read their verified reviews on Unjumble before you pick.

Post an API and integrations gig in 60 seconds. Describe the work, set your budget and timeframe, and choose whether it is time-based or outcome-based. Local freelancers send a bid with a quote, you compare their profiles, portfolios and reviews, then pick the one that fits. Posting is free, so you only pay for the work.

Every gig runs on a payment schedule you both agree on up front, and every payment is held securely through Stripe. On an outcome-based gig you fund each stage before the work starts and it is released once you sign off. On a time-based gig you are charged for each month as it starts, and it is released to your freelancer once that month has been worked. No chasing invoices, and no paying for work that is not done.

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