Skip to content
CV Rocket
Get started
How it worksThe enginePricingBlogContactSign in

Open nowFirst seen 34 hours ago

Full-Stack Engineer (High-Performance Web Systems)

IO TECH SOLUTIONS LIMITED787 open roles

Where
Hong Kong Island, Hong Kong SAR, Hong Kong
Get the CV for this job

From $25 per CV, paid once. No subscription.

Your applicationOpen nowFull-Stack Engineer (High-Performance Web Systems)IO TECH SOLUTIONS LIMITED · Hong Kong Island, Hong Kong SAR, Hong Kong

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on IO TECH SOLUTIONS LIMITED's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

11.5% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 2.0%1 day
  2. 4.3%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: first seen 34 hours ago

The posting

What You Will Do

  • Legacy Transformation: Reverse-engineer complex business logic from C# WPF systems and architect modern, scalable equivalents in a web-native environment.
  • Data Pipeline Engineering: Architect and optimize the end-to-end WebSocket pipeline, implementing advanced techniques like binary serialization (Protobuf), message routing, and bounded channel queuing.
  • High-Frequency UI: Develop real-time data visualizations and grids that handle thousands of updates per second with zero UI lag using Web Workers and custom rendering strategies.
  • Infrastructure Collaboration: Partner with trading and infra teams to bridge the gap between low-latency backend services and the end-user experience.
  • Quality & Resilience: Establish automated testing frameworks for real-time systems and provide tier-2 production support to ensure 24/7 system reliability.

Requirements

  • Backend Expertise: 5+ years of professional experience in .NET / C# development, specifically with ASP.NET Core Web API. Strong proficiency with Entity Framework Core and MSSQL (or similar relational databases). Experience implementing and managing Redis or similar caching solutions. Familiarity with message brokers such as RabbitMQ, Kafka, or other pub/sub systems.
  • Frontend Mastery: Deep proficiency in Vue.js (Vue 3) and TypeScript. Experience with Pinia for state management and Tailwind CSS for styling. Hands-on experience with high-performance data grid libraries (e.g., VXE Table).
  • Real-Time Systems & Performance: Proven track record building real-time applications using WebSockets, SSE, or similar streaming technologies. Expertise in high-performance rendering techniques: virtual scrolling, efficient DOM updates, and handling massive real-time datasets. Experience with Web Workers for offloading CPU-intensive tasks to maintain UI responsiveness. Knowledge of Protobuf serialization and working with binary data protocols.
  • Architecture & Security: Solid understanding of modern authentication systems, including OAuth 2.0, SAML, and SSO. Ability to establish and maintain automated testing practices and frameworks.
  • Preferred Qualifications: Previous experience in FinTech, Crypto, or Financial Services. Experience building or maintaining trading platforms or high-frequency data dashboards.
From $25, paid onceGet the CV for this job

What happens when you press

One press. We do the rest.

  1. A CV for this posting

    Written against IO TECH SOLUTIONS LIMITED's own wording, from every piece of relevant proof in your profile.

  2. 25 readers review it

    Recruiter, hiring manager, skeptic and more read every draft, round after round. You get the best round.

    The review screen in CV Rocket: how each CV was read, round by round.

  3. We apply on IO TECH SOLUTIONS LIMITED's form

    Our application engine gets through the hardest forms there are. Where a question needs you, AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

    An application in CV Rocket: every answer filled in on the employer's form.

  4. Every reply, sorted

    IO TECH SOLUTIONS LIMITED's answer lands in your private mailbox, and we classify it on arrival: interview, question, rejection.

    The CV Rocket inbox: each employer reply classified as an interview, an action or a rejection.

  5. Reply with AI

    AI helps you write the email, checks it and sends it. We show you whether the recruiter read it.

  6. The interview in your calendar

    Full integration with your calendar. The invitation goes straight in.

    An interview invitation in the CV Rocket inbox, added to the candidate's calendar.
Get the CV for this job

From $25 per CV, paid once. No subscription.

Why it works

3×

more interviews than doing it yourself with ChatGPT.

ChatGPT writes a CV and never learns what happened to it. We see every reply. For each CV we know:

  • How it was written, and how the review scored it
  • When we applied, and how long after the posting went up
  • Which posting, which company, which city
  • Who got the interview, and who heard nothing

That is how we know which CVs get called.

Get the CV for this job

From $25 per CV, paid once. No subscription.

The numbers game

More applications. More interviews.

Every application goes out with its own CV, written for that posting and paid once. Send enough of them and the law of large numbers finds you the job.

Get the CV for this job
By hand5–10
With CV Rocket100
applications a day

Nearby

Live postings like this one

Same employer first, then the same role elsewhere.

Before you press

Straight answers

Get the CV for this job

From $25 per CV, paid once. No subscription.

What if my background isn't good enough?

We make the most of the background you have. The CV uses every piece of relevant proof your profile holds, and one of the 25 readers reads your whole profile and flags what the CV left out.

Do you really apply for me?

Yes, on the employer's own form, the hardest ones included. Where a question needs you, you answer it right there and AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

Is it a subscription?

No. You pay once per CV, from $25. Every application goes out with its own CV, written for that posting.

One job. One CV.
Paid once.

Pick the posting you want. We write for it, apply for you and catch the reply.

Get the CV for this job

From $25 per CV, paid once. No subscription.