Senior Software Engineer, Backend - Stablecoin at Airwallex

Singapore

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SGD 165,000 – SGD 240,000Compensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

Fintech, Payments, CryptocurrencyIndustries

Requirements

Highly experienced engineer (8+ years) with deep expertise in object-oriented design and production-grade software development, including at least one strongly typed language (e.g. Kotlin, Java, C#, C++, Rust); Python experience is useful but not sufficient on its own
Proven experience building and integrating blockchain infrastructure (wallets, transaction flows, key management, etc.) into larger financial systems
Experienced in integrating new systems into legacy or distributed environments without introducing instability or regressions
Strong grasp of secure system design, particularly around private key handling, signing, encryption, and operational controls
Able to quickly pick up unfamiliar tools or frameworks when needed and adjust to changing requirements

Responsibilities

Be part of a high-impact engineering team building stablecoin infrastructure from the ground up
Design and implement secure systems for key management, transaction signing, gas fee management, and blockchain integration
Own services that manage the full lifecycle of stablecoin transactions (mint, burn, transfer, reconciliation)
Build internal ledgering systems that track balances across multiple chains and token types
Integrate stablecoin infrastructure into Airwallex’s existing FX and payment systems, enabling seamless conversion between any supported currency and stablecoins
Write, review, and ship production code
Collaborate with product, infrastructure, and compliance teams to deliver reliable and auditable services

Skills

Key technologies and capabilities for this role

Backend EngineeringStablecoinBlockchainPayments InfrastructureFXLiquidity ManagementTokenised CurrencyGlobal Payments

Questions & Answers

Common questions about this position

What is the salary range for this Senior Software Engineer position?

The salary range is SGD 165K - SGD 240K.

Is this role remote or onsite?

The position is onsite.

What key skills are required for this backend engineering role?

The role requires skills in architecting and building robust systems, blockchain integration, digital asset custody, key management, transaction signing, gas fee management, and global payments infrastructure.

What is the team like at Airwallex?

You'll be part of a high-impact engineering team building stablecoin infrastructure from the ground up within the Financial Markets team.

What makes a strong candidate for this role?

A strong candidate is a skilled developer who can take a leading role in designing and implementing secure systems for stablecoin transactions, including mint, burn, transfer, reconciliation, and integration with blockchain and Airwallex's existing infrastructure.

Airwallex

Cross-border payment solutions for businesses

About Airwallex

Airwallex provides cross-border payment solutions for businesses of all sizes, including small to medium-sized enterprises and large corporations. The company offers a range of financial services such as multi-currency accounts, international money transfers, foreign exchange services, and payment gateway solutions. These services are designed to facilitate efficient and cost-effective international transactions. Airwallex uses advanced technology to ensure that these transactions are fast and secure. Unlike many competitors, Airwallex focuses on building financial infrastructure that supports the digital economy, allowing businesses to operate seamlessly across borders. The company's goal is to simplify global payments and make them accessible to businesses worldwide.

Eastern District, Hong KongHeadquarters

2015Year Founded

$877.4MTotal Funding

SERIES_ECompany Stage

FintechIndustries

1,001-5,000Employees

Benefits

Hybrid Work Options

Employee Equity Programs

Risks

Increased competition from fintech startups could erode Airwallex's market share.

Regulatory scrutiny in Asia-Pacific, especially China, may impact Airwallex's operations.

Volatility in foreign exchange rates poses a risk to Airwallex's revenue streams.

Differentiation

Airwallex offers a comprehensive suite of cross-border payment solutions for businesses.

The company integrates financial services into platforms, enhancing customer experience and efficiency.

Airwallex's global presence with ten international offices supports its expansive service offerings.

Upsides

Airwallex reported an 83% revenue increase in APAC, showcasing strong regional growth.

The partnership with Carwow enhances Airwallex's visibility and operational efficiency in the UK.

Airwallex's expansion in EMEA with new offices boosts its international market presence.

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