.NET Development in Singapore

About .NET Development

We take on .NET builds as a senior engineering service: ASP.NET Core web apps and Web APIs, enterprise backends, and moving legacy .NET Framework code onto a modern, cross-platform stack. It is a newer service line for us, so we will say so plainly. You get senior engineers, a written scope, and a flat quote, and we lean on the API design, testing, CI, and migration work that carries straight over from the rest of what we build.

What the engagement includes

• You already run on Microsoft: SQL Server, Azure, Active Directory, or a team that standardizes on C#. .NET fits that estate with far less friction than bolting on a different runtime.
• You need a fast, strongly typed backend for high-throughput APIs. ASP.NET Core on Kestrel is genuinely quick, and static typing catches a whole class of bugs before they reach production.
• You are modernizing an old .NET Framework or WebForms app and want to stay in the same language and hiring pool instead of rewriting in something unfamiliar to your team.
• Your team hires C# developers and will own the code after us. Handing a Node or Laravel app to a .NET team, or the reverse, is a real long-term cost worth avoiding.
• If none of that is true and you are starting fresh with no Microsoft ties, we will often steer you to Node or Laravel instead, the stacks we run deepest in. Saying that costs us the .NET brief and saves you money, which is the trade we would rather make.

AIS submissions through APEX, the July 2026 retirement ages and the MyCareersFuture rule in a Singapore .NET HR system

When a Singapore .NET system runs HR and payroll, it carries a government calendar inside it. Under section 68(2) of the Income Tax Act, employers with five or more employees in 2026, or who have been told to, must submit their employees' employment income to IRAS electronically under the Auto-Inclusion Scheme by 1 March, and a late submission can bring a fine of up to S$5,000. IRAS strongly encourages submitting straight from payroll software through its AIS API, and a company with an in-house payroll system can register to be onboarded to the API itself. The gateway is APEX, GovTech's API exchange, and under the One-Stop Payroll initiative of IRAS, the CPF Board, MOM and GovTech the same software can also send monthly CPF contribution details and MOM survey returns, so a payroll module integrates once. A vendor that wants to be listed as an AIS payroll software vendor must be the software's developer, not a reseller, and pass IRAS's annual validation test, which for the Year of Assessment 2027 runs from September to November 2026: interest registered by 30 September, then a self-verification checklist and acknowledgement numbers from successful test submissions to the APEX sandbox by 30 November. For an in-house system those test scenarios work as acceptance tests, rerun whenever IRAS updates them, as it last did on 9 September 2026. IRAS's list of recommended controls for payroll software then shapes the design. Generated IR8A forms and appendices are not editable, so a correction is made in the payroll records and the form regenerated. Amendments cover the current year, four back years and one advance year. Only authorised users may submit through the API. And a reconciliation report compares total remuneration paid against total remuneration reported, while each successful submission is shown with its acknowledgement number, file type, record count, time and the user who sent it. How AIS applies to your organisation is for your accountant.

The Retirement and Re-employment Act changed on 1 July 2026, and an HR system that stores a single retirement age is now wrong. MOM's table ties the age to date of birth: employees born from 1 July 1958 to 30 June 1960 have a minimum retirement age of 62, those born from 1 July 1960 to 30 June 1963 have 63, and those born on or after 1 July 1963 have 64, with re-employment up to 69 for all three. So the rule is a lookup keyed on birth date with effective dates rather than a constant, and the retirement date is the birthday itself: MOM's example is that someone turning 64 on 1 August 2026 retires that day and, if re-employed, starts the first contract the same day. For re-employment the employee must be a Singapore citizen or permanent resident, must have served at least two years before turning 64 if hired at 55 or older, and must have satisfactory performance and be medically fit, the last two being assessments with an owner and a date rather than fields typed in later. MOM's timeline then produces tasks. Discussions should start not less than six months before the employee turns 64, an eligible employee should be offered a contract at least three months before the retirement date, and an employee who does not qualify should be told at least three months before. Where no suitable job exists, the obligation can be transferred to another employer with the employee's agreement, or a one-off Employment Assistance Payment made, so the workflow supports both outcomes and keeps a consent record for the transfer. MOM sets that payment's minimum and maximum and a lower rate after 30 months of re-employment, so the amounts are configuration, not code. In .NET this is a hosted background service that checks the employee table nightly and raises each task as its window opens. How the Act applies to a particular employee is for your HR adviser.

Hiring modules in Singapore need a rule a generic applicant tracking system does not know. Under the Fair Consideration Framework, an employer applying for an Employment Pass or S Pass must first advertise the job on MyCareersFuture, the national jobs portal, and must not make a job offer to anyone during the mandatory advertising period of at least 14 consecutive days, so that candidates have time to respond and be considered fairly. MOM says it has acted against employers that advertise after already choosing a foreign candidate and never review the MyCareersFuture applicants, and against discriminatory job advertisements, with work pass debarment of 12 months, up to 24 in egregious cases, which now extends to renewals. An employer or key personnel making a false declaration that all candidates were considered fairly can be prosecuted under the Employment of Foreign Manpower Act, facing imprisonment of up to two years, a fine of up to S$20,000, or both. The system therefore treats each advertisement as a dated record, computes the 14-day window per requisition, and keeps the offer action locked until the window closes unless a recorded exemption applies. MyCareersFuture applicants are tracked in the same pipeline as everyone else, and each review is logged with the reviewer, the date and the reason for the outcome, because the evidence of fair consideration is that log rather than the job post. Advertisement text is checked before publication for preferences on age, sex, race or nationality, which MOM names as non-job-related characteristics employers should not discriminate on, and the checker flags the phrasing for a person to change rather than quietly rewriting it. When an Employment Pass application follows, the requisition already holds the advertisement, the applicant list and the review trail the declaration rests on. Whether a particular role is exempt from advertising is for MOM's guidance or your HR adviser.

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

.NET Development: common questions

Other markets we work in