Node.js Developers in Singapore

About Node.js Developers

Node.js and TypeScript are core to how we build, not a service we bolted on last quarter. Hire a senior Node.js engineer or a small backend team to build APIs, real-time systems, and the services behind your product. Flat quotes, direct access to the person writing your code, and no interns billed at senior rates.

What the engagement includes

• A senior engineer full-time on a monthly rolling contract. You set the roadmap and run the standups, we ship against it, and you can stop any month with notice.
• TypeScript by default, on the backend as well as the front, so bugs surface at compile time and the next developer can actually read what shipped.
• Tests and CI as part of the build, not a promise for later: unit and integration tests with Vitest or Jest and supertest, running green in CI before anything merges.
• You own the GitHub repo, the infrastructure, and the deployment from the first commit. Clean handover or exit whenever you want it, nothing locked to us.
• Flat INR quotes with GST for Indian clients, and USD, GBP, CAD, or AED via Wise for overseas teams. W-8BEN and LUT on file, 24-hour response.
• Direct access to the person writing the code. No account-manager layer, no offshore handoff, no junior quietly swapped in after the sales call.

Who may hold the keys: hired Node.js developers on a Singapore digital payment token service

Node.js is a common backend for crypto exchanges and wallets, and in Singapore the first design question for one is not which chain library to use but who is allowed to move customer assets. MAS's Guidelines on Consumer Protection Measures by Digital Payment Token Service Providers, PS-G03, took effect on 4 October 2024 and apply to licensed and exempt DPT service providers. They expect the senior managers and personnel who control the movement of customers' assets to be resident in Singapore, with the capability and authority to return those assets if MAS or a court requires it, and that holds even where the assets sit on devices outside Singapore. No individual should be able to authorise and effect a movement alone, and where keys are split by multi-party computation the shares go to different parties so that no single party can move assets; MAS's example is two of three. Its illustration of a foreign custodian with key shares spread across jurisdictions says enough shares must sit with a Singapore-resident senior manager that no transaction can happen without that person's authorisation. For an engagement with engineers in India that settles the boundary before the first sprint. Our Node developers write the services that build transactions, track deposits, queue withdrawals and talk to the signing infrastructure, but they hold no key share, no approval role and no production credential that can initiate a movement, and they work against testnets and a staging custody setup whose keys move nothing of value. The approval quorum is enforced by the custody provider or the MPC policy rather than by our application code, so a bug or a compromised deploy on our side cannot sign on its own. Changes to signing policy and withdrawal limits go through your Singapore-resident approvers, and the review record shows that they did. Whether your service is a DPT service, and which parts of the guidelines bind your licence, is for your compliance team.

Segregation in these guidelines is a property of blockchain addresses, which puts it in the wallet service rather than the ledger. Where a provider keeps the trust account itself, MAS expects customers' assets to sit at different blockchain addresses from the provider's own, so every address is typed by owner when it is created and the sweep job that consolidates deposits can never route customer funds into a house wallet, or fees out of a customer one. At least 90 per cent of customers' assets in the trust account should be held at all times in cold wallets, systems with no internet or wireless connection, and MAS's illustration of how that works shapes the code: the transaction is built on an online system, carried to an offline device on portable storage, signed there, and carried back to be broadcast. So the Node service splits into a builder that produces unsigned transactions in a format the offline signer accepts and a broadcaster that takes signed ones back, with nothing in between that ever holds a cold key. The 90 per cent floor becomes a continuously computed ratio of hot to total customer holdings per asset, with an alert before a heavy withdrawal day pushes the hot wallet past its share, and a top-up runbook a person executes, because refilling the hot wallet is itself a cold-wallet movement. The provider must also disclose its storage policy, so the dashboard's ratio is the figure that public statement rests on. Monthly statements of account are expected as well, covering each transaction, the status of every asset held, every movement with its date, reason and amount, and charges, unless the customer has real-time access to those particulars and has agreed to receive them that way. That makes the movement ledger an append-only record with a reason on every row, not balances derived from chain state at read time. How these expectations fit your custody arrangement is for your compliance team.

Retail customers carry rules of their own, and they land in product logic. A DPT service provider should not entice a retail customer to lend, stake, mortgage, charge or pledge their assets, nor carry out such a transaction for them, and staking is defined broadly enough to include locking a customer's assets as collateral in smart contracts in return for fees, rewards or returns. For a customer who is not retail the same products need clear written risk disclosures and a written acknowledgment first. Every customer other than an institutional investor is retail by default, and accredited investor status is an opt-in: the provider assesses the customer against the Securities and Futures Act criteria, gives them a set of written statements including a prescribed warning, records their signed consent, and honours a withdrawal of consent after a stated period. Valuing a customer's crypto for the net personal assets test has its own rule, a haircut of at least 50 per cent on market value with the result capped at S$200,000, and the provider discloses its method and reviews it at least once a year. In a Node backend that becomes a customer classification held as state with an effective date, a consent record storing the exact text the customer saw, and a feature gate that checks classification before any earn, staking or lending product is even offered, not only before it executes. A customer who withdraws consent falls back to retail once the stated period passes, so positions in a product now closed to them need an unwinding path rather than a hidden menu item. Withdrawals to a customer's own address are not caught, because the guidelines say transferring assets to an account the customer specifies is not lending or staking. Whether a particular product counts as staking is for your own counsel.

How we work with Singapore clients

Singapore is the one market we serve where the working day is simply shared. We are two and a half hours behind you and neither country moves its clocks, so our morning starts partway through yours and the whole of your afternoon is live time for both sides. That changes the shape of an engagement more than anything technical does: a call is booked for the same afternoon rather than the same week, a question raised before your lunch is answered after it, and the written-first method we run for North American clients is a courtesy here rather than a necessity. We keep the written record anyway, with a default chosen on every open decision, because it is the thing an auditor or a new hire can read later and a call is not.

Invoicing is worth stating plainly because the GST position confuses buyers on both sides. We are outside Singapore, so no GST appears on our invoice. Whether you account for it yourself is the reverse charge question, and IRAS's own guidance is that a GST-registered business making only taxable supplies is not affected, while a partially exempt one accounts for it in its own return. We quote in Singapore dollars, the figure holds for the project whatever the rupee does, and payment by bank transfer or Wise avoids the card fees a five-figure invoice does not need. The contract can sit under Singapore law with Singapore courts, and unusually among our overseas markets that clause has teeth: Singapore is a reciprocating territory under section 44A of India's Civil Procedure Code, so a judgment of the Singapore High Court can be executed in India directly rather than re-litigated.

Questions Singapore clients ask

Node.js Developers: common questions

Other markets we work in