Highlights

Aug 26, 2025

AI Mini Challenge: Technical Reflection

1. IntroductionThe realm of Artificial Intelligence is constantly evolving, presenting new challenges and opportunities for innovation. At Money Forward, we're always eager to push the boundaries of what's possible, and the recent AI Mini Challenge presented a fantastic opportunity to do just that. This internal competition challenged teams to explore and implement AI solutions to real-world problems. It was an intensive yet incredibly rewarding experience, and we're excited to share our journey and the technical insights we gained.We are a team of engineers at Money Forward who came together for the AI Mini Challenge, bringing a strong mix of backend and frontend expertise. As backend engin

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Aug 25, 2025

Ai Mini Challenge: Crucial Things We Need to Know Before Creating AI Tools

1. IntroductionHey everyone! I'm Dante, and I'm part of the Bante team, a group of five enthusiastic developers – Barry, Jett, Andre, Chein, and myself. We are all Backend Developers.2. SituationBefore this challenge, most of us were primarily AI users. We'd interact with AI tools and marvel at their capabilities, but the inner workings remained a bit of a black box. This sparked a deep curiosity: we wanted to peel back the layers and understand everything about AI, from Large Language Models (LLMs) and embeddings to indexing, agents, and post-processing. The mini-challenge presented the perfect opportunity to learn by building, pushing us to create a practical AI tool from the ground up.O

Aug 25, 2025

AI Mini Challenge: From Idea to Real-World Impact

Hi everyone! I'm Hugon, a Golang Engineer working on the Lease Accounting project. I'm excited to share the story of how my team and I tackled a company-wide AI mini-challenge and won the Evolution prize! Our journey wasn't about building a complex AI from scratch, but rather about solving a real-world problem for our team.Why We Joined the ChallengeMy main motivation for participating was simple: I wanted to find a way to use AI to boost productivity for both developers and Product Owners on my team. The mini-challenge gave me the perfect opportunity to explore this idea.Initially, we thought we'd build a RAG (Retrieval-Augmented Generation) system and an AI agent completely from the ground

Jul 23, 2025

MFV AI Mini Challenge: Lessons Learned

The MFV AI Mini Challenge, which concluded on June 27th, marked not an end, but a significant beginning in MFV's journey towards integrating Artificial Intelligence into its core operations.

May 28, 2025

Cursor AI and My Coding Workflow

Hey everyone, Hugo here!As a developer at Money Forward, I'm always looking for ways to optimize my workflow and become more efficient. Recently, I stumbled upon Cursor AI, and let me tell you, it’s been a total game-changer. I wanted to share my experience and dive into the technical aspects of how it's impacted my daily work.Before Cursor AI, I often felt bogged down. Debugging those gnarly, edge-case bugs? Hours. Setting up a boilerplate for new features? Tedious. Keeping up with the latest best practices and framework updates? Exhausting. I’d find myself constantly switching between my IDE, documentation, and Stack Overflow, trying to piece everything together. It felt like my produc

May 28, 2025

HTTP Adventure: [Part 2] The evolution of HTTP/2

This article is targeted at web developers new to HTTP/2 design in overall, and mainly discusses the way HTTP/2 addressed the HOL blocking problem.

May 27, 2025

Some suggestions for writing good unit test in RSpec

1. Isolate Tests to Avoid Shared StateFlaky tests often arise when tests rely on shared state, meaning the state of one test can affect the outcome of another. This can happen when objects or variables are not reset between tests.Solution:Use let and let! for lazy and eager loading to ensure fresh objects are created for each test.Use before(:each) and after(:each) to reset shared state and prepare the environment for each test.describe User do let(:user) { create(:user) } it 'is valid with a name and email' do expect(user).to be_valid end endAvoid using global variables or objects that persist between tests. Each test should be independent of others to avoid flaky behavior.2. Ens

May 27, 2025

Unit Testing in Kotlin

This guide introduces unit testing in Kotlin, with a focus on Java developers transitioning to Kotlin for backend development. Kotlin, being interoperable with Java, allows developers to leverage familiar tools while benefiting from its concise syntax and modern features. This document covers essential testing frameworks, mocking libraries, and assertion tools tailored for Kotlin, helping you write robust and readable tests.

May 27, 2025

Optimizing SQL Queries: 7 Simple Ways to Improve Performance - Mysql8

Writing efficient SQL queries is crucial for database performance, especially when dealing with large datasets. Poorly optimized queries can lead to slow response times, high CPU usage, and excessive memory consumption. Fortunately, by following a few key principles, you can significantly improve query performance. In this guide, we’ll explore seven essential techniques to optimize your SQL queries, from avoiding SELECT * to optimizing JOINs and subqueries. Each technique includes a detailed explanation, performance issues, and improved approaches to help you write faster and more efficient queries.

May 06, 2025

Feature-Sliced Design in Frontend

Feature-Sliced Design (FSD) is an architectural methodology for scaffolding front-end applications. Simply put, it's a compilation of rules and conventions on organizing code. The main purpose of this methodology is to make the project more understandable and stable in the face of ever-changing business requirements.

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Highlights

AI Mini Challenge: Technical Reflection

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Ai Mini Challenge: Crucial Things We Need to Know Before Creating AI Tools

AI Mini Challenge: From Idea to Real-World Impact

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HTTP Adventure: [Part 2] The evolution of HTTP/2

Some suggestions for writing good unit test in RSpec

Unit Testing in Kotlin

Optimizing SQL Queries: 7 Simple Ways to Improve Performance - Mysql8

Feature-Sliced Design in Frontend