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

Open nowPosted yesterday

Backend Engineer

OUHALO PTE. LTD.

Pay
SGD 5,000 – SGD 9,000 a month
Where
Central, Singapore
Get the CV for this job

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

Your applicationOpen nowBackend EngineerOUHALO PTE. LTD. · Central, Singapore

  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 OUHALO PTE. LTD.'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.

13.8% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 2.2%1 day
  2. 4.7%3 days
  3. 13.8%7 days
  4. 22.3%14 days
  5. 37.8%30 days
  6. 59.0%60 days
This job: posted yesterday

The posting

About the role

A Singapore-based mobile virtual network operator offering travel eSIM plans through its app and website. You will write and run the backend services that turn a paid order into a working eSIM. You will also configure data packages on upstream platforms and help Operations verify what travellers can buy and use.

What you will do

  • Design and maintain REST APIs and database schemas for orders, eSIM provisioning, activation, usage and top-ups. Write documented, testable code that Product, Frontend and Operations can build on.
  • Integrate each provider from sandbox to production. Map provider package IDs to retail SKUs, process webhooks or poll for status, and make retries safe. If a provider times out after creating an eSIM, reconcile the order before sending another request.
  • Create and test packages in provider portals. Configure coverage, networks, data allowances and validity. Document when validity starts, when daily data resets, how fair-use throttling works and whether top-ups extend the plan.
  • Work with Product, Frontend, Payments and Operations to test an order from payment confirmation to first data use. Check that the package a customer receives matches the offer on the website and in the app.
  • Deploy and monitor backend services, write automated integration tests and investigate slow or failed requests. Give Operations tools to trace orders, explain provider-specific issues and confirm recovery with a test order.

What you bring

  • Hands-on backend development in at least one of Java, Go, Python, PHP or JavaScript (Node.js). Experience designing REST APIs and working with MySQL, PostgreSQL or a comparable relational database.
  • Experience personally building, deploying and supporting a third-party API integration. You can explain how you handle authentication, asynchronous updates, duplicate requests and production failures.
  • Travel eSIM, mobile roaming or MVNO industry experience is required. You have personally created and tested data packages on different upstream platforms and can explain their differences to Operations.
  • Degree in Computer Science, Software Engineering or a related field. We typically look for 2+ years of backend experience. Recent graduates who gained the relevant hands-on experience through internships are welcome to apply.

Posting text belongs to the employer. Removal requests: contact us.

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 OUHALO PTE. LTD.'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 OUHALO PTE. LTD.'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

    OUHALO PTE. LTD.'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.