Senior Software Engineer, Onboarding (Client-facing AI initiatives)

REAP Limited; Hong Kong; Hybrid; HKD 900,000 - 1,300,000; Full time

Job summary

REAP Limited is seeking a Senior Software Engineer for onboarding and client-facing AI initiatives. You will own the full development lifecycle, building scalable frontend and backend services in AWS, collaborating with cross-functional teams to deliver customer-centric solutions.

The role emphasizes modern tech stack, observability, and mentoring others in a fast-growing fintech startup. Flexible hybrid/remote work options are available to support global collaboration.

Qualifications

• 6+ years of fullstack development with end-to-end ownership of business-critical systems.

Responsibilities

• Own the full development lifecycle of features from conception to deployment.
• Design and build scalable, maintainable systems and user interfaces.
• Collaborate with product managers, designers, and engineers to deliver end-to-end solutions.
• Enhance observability with tests, metrics, and debugging across incidents.
• Assist with resume screening and interviewing for new talent.
• Stay current with industry trends to keep the tech stack modern.

Skills

React.js

TypeScript

Hooks

Redux/Zustand

React Query

MUI

Emotion/Styled Components

Node.js

API development

Serverless

Event-driven

Python

Go

Nest.js

AWS

RDS

PostgreSQL

MySQL

TypeORM

Prisma

Debugging

Analytical thinking

Communication

Ownership

AI coding tools

LLM APIs

Fintech

KYC

Onboarding

Payments

Crypto

Startup experience

Terraform

CloudFormation

AWS SAM

Tools

TypeORM

Prisma

Job description

Senior Software Engineer, Onboarding (Client-facing AI initiatives)

As a Senior Software Engineer on the AOM team, you'll own the full development lifecycle of features, from conception to deployment. You'll play a key role in creating scalable, maintainable, and robust systems and user interfaces that are truly customer-centric. Working within a cross-cutting team, you'll collaborate closely with other engineers and product stakeholders to design and craft innovative solutions that directly address our clients' everyday challenges.

The ideal candidate will possess a strong passion for technology, a drive for excellence, and a collaborative mindset to work effectively within cross-functional teams. If you are enthusiastic about pushing boundaries, solving complex problems, and making a significant impact, we encourage you to apply and be part of our exciting journey in shaping the future of our products.

Design, develop, and deploy scalable applications in our AWS environment, ensuring the implementations meet business requirements and adhere to high-quality standards.

Collaborate closely with cross-functional teams, including product managers, designers, and fellow engineers, driving seamless product development from concept to deployment.

Keep our tech stack modern and competitive by staying current with the latest industry trends and technologies.

Enhance system observability and reliability through writing tests, adding key metrics, debugging issues, and learning from incidents.

Contribute to our team's growth by assisting with resume screening and conducting interviews for new talent.

Your Superpowers

Experience: 6+ years of fullstack development experience with end-to-end ownership of business-critical systems.

Frontend: Strong React.js ecosystem skills (TypeScript, Hooks, Redux/Zustand, React Query, MUI, Emotion/Styled Components).

Backend: Proficient in Node.js and TypeScript; experienced in building APIs and working with event-driven/serverless systems. Knowledge of Python, Go, Nest.js or similar languages/libraries is a plus.

Cloud & Database: Hands-on AWS experience (Serverless, networking basics, container services, RDS). Strong database design skills with PostgreSQL/MySQL, solid SQL fundamentals, and experience with ORMs (TypeORM, Prisma).

Problem-Solving: Curious and detail-oriented with strong debugging skills, balancing correctness with practical tradeoffs.

Collaboration & Growth: Effective communicator, open to feedback, and eager to take ownership in a fast-paced environment.

AI-assisted coding: Comfortable using AI coding tools (e.g., Cursor, GitHub Copilot, Claude Code, Codex) and familiar with integrating LLM APIs (e.g., MCP, RAG).

Nice to Have

Domain Knowledge: Experience in fintech (KYC, compliance, onboarding, payments/cards, crypto).

Startup Mindset: Experience in high-growth or startup environments.

Infrastructure as Code: (Terraform / CloudFormation / AWS SAM)

Why You'll Love it Here

A high-impact role in a rapidly growing fintech startup

Flexible hybrid/remote work environment with a global, collaborative team

Reap Card stipend

Use of AI tools at work, and the space to learn, experiment, and grow with them

A culture of innovation, inclusion, and continuous learning