Senior Full-Stack Engineer - New Product Development

About Sleek

✅ Built by entrepreneurs, for entrepreneurs, Sleek’s mission is to make the lives of our fellow entrepreneurs easier.

🚀 It is the easiest way to get started and manage a business day to day. Just one platform to digitally manage company incorporation, compliance, bookkeeping & accounting, payroll, reporting, taxes and SO much more. Sleek's human-first, tech-enabled approach helps entrepreneurs automate repetitive tasks, while our supportive experts offer the best, personalised advice to our customers.

🌏 Present across Singapore, UK, Australia, and Hong Kong, Sleek has served over 450,000 clients across 110 countries and processed millions of bookkeeping transactions digitally.

📍 Sleek is registered with the company registry and tax authorities of Singapore, Hong Kong, Australia, and the UK. We are also regulated by the Monetary Authority of Singapore under the Payment Services Act, and issued a Major Payment Institution (MPI) license No. PS20200521.

Primary Description

Sleek · Vietnam (Remote)

Description: Through proprietary software and AI, along with a focus on customer delight, Sleek makes the back-office easy for micro SMEs.

We give Entrepreneurs time back to focus on what they love doing - growing their business and being with customers. With a surging number of Entrepreneurs globally, we are innovating in a highly lucrative space.

We operate 3 business segments:

• Corporate Secretary: Automating company incorporation, secretarial, filing, Nominee Director, mailroom, and immigration processes via custom online robots and SleekSign.
• Accounting & Bookkeeping: Redefining Accounting, Bookkeeping, Tax, and Payroll thanks to SleekBooks ledger, AI tools, and exceptional customer service.
• FinTech payments: Offering digital banking services to new businesses.

Sleek has around 15,000 customers across Singapore, Hong Kong, Australia, and the UK, with around 500 staff and a startup mindset.

Requirements

Mission:

The Senior Full-Stack Engineer is responsible for owning the architecture, development, and scaling of Sleek's next-generation digital products.

This role's mission is to combine backend engineering, API integration, and frontend development to deliver secure, performant, and user-centric web applications that integrate seamlessly with Sleek's CRM and analytics systems.

You'll work closely with product, design, and growth teams to take products from prototype → launch → global scale, ensuring:

• High engineering quality
• Full security and compliance
• Strong data integrity
• Smooth user experience

Outcomes:

• Build and Launch the MTD Product Backend...
• Integrate Sleek's CRM and Analytics Systems...
• Deploy to Scalable Production Infrastructure...
• Deliver a Secure, Compliant Platform...
• Enable Long-Term Maintainability...

Must Have Requirements

• 6-8 years of experience as a Full Stack Engineer
• 4-5 years of experience as a Back End Engineer
• 3-4 years of experience as a Front End Engineer
• 2 plus years of experience in building production B2B SaaS or FinTech products
• 6 plus years of experience in Backend: Node.js / Nest.js
• 6 plus years of experience in Frontend: React / Next.js
• APIs: REST, OAuth 2.0, JSON schemas, Postman
• DevOps: AWS, Docker, CI/CD pipelines
• Security: GDPR
• Database: PostgreSQL
• Proven record of delivering live, production-grade systems independently or as lead developer
• Experience taking prototypes to production (Replit to AWS/Vercel)
• Experience in working in a fast-paced startup environment
• Strong grasp of scalable architecture and complex API integrations
• Bonus: experience with accounting, tax, or FinTech APIs

Benefits

• Humility and kindness: Humility is a core attribute we hire for, which means we have a culture of not taking ourselves too seriously and being able to laugh.
• Flexibility: You'll be able to work from home. You can also work fully remote from anywhere in the world for 1 month each year.
• Financial benefits: We pay competitive market salaries and provide staff with generous paid time off and holiday schedules.
• Personal growth: You'll get a lot of responsibility and autonomy at Sleek. There's also a range of internal and external facing training programmes we run. We're also at the forefront of utilising AI in our space and are developing a regional center of AI excellence.
• Sleek is a proudly certified B Corp committed to building an inclusive, equitable, and regenerative economy.