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BjakBJ

機械学習エンジニア(LLM)Machine Learning Engineer (LLM)

Bjak is a technology company focused on making financial services transparent, efficient, and inclusive, and is the largest insurance portal in Southeast Asia, headquartered in Malaysia. They help millions find the best value insurance policies by simplifying access through technology.

Bjak

Employee count: 51-200

Japan only

言語モデルを現実のアプリケーションへ変革する

私たちはグローバルなユーザーを対象とした AI システムを構築しています。現在は AI トランジションの時代にあり、この新しいプロジェクトチームは、現実世界への影響力を拡大し、世界中で最大限に活用されるアプリケーションの構築に注力します。

このポジションはグローバルな役割であり、柔軟なリモートワークと本社での対面コラボレーションを組み合わせたハイブリッド勤務を採用しています。製品、エンジニアリング、オペレーション、インフラ、データの各地域チームと緊密に連携し、影響力のある AI ソリューションを構築・拡張します。

この役割が重要な理由

最先端のモデルをファインチューニングし、評価フレームワークを設計し、AI 機能を本番環境に投入します。あなたの仕事は、モデルがインテリジェントであるだけでなく、安全で信頼でき、大規模に影響力を持つことを保証します。

主な業務内容

  • ファインチューニングと最適化 —— LoRA/QLoRA を使用し、LLaMA、Mistral、Gemma などのオープンソースモデルを最適化

  • プロンプト設計とデータ構築 —— ブランドの声やトーン、安全性を反映したプロンプトやデータセットを設計

  • モデル評価 —— Perplexity、Toxicity、関連性などの指標パイプラインを構築し、安全で高品質な出力を確保

  • デプロイとモニタリング —— モデルを本番環境にスケールさせ、パフォーマンス最適化とドリフト監視を実施

  • コラボレーションと提供 —— プロダクト、エンジニアリング、デザインチームと連携し、ユーザー向け AI 機能をリリース

求める人物像

  • 主体性と独立性を好む方

  • 「行動から明確さが生まれる」と信じ、完璧な計画を待たずにプロトタイプ・テスト・反復を行える方

  • スタートアップの混乱の中でも冷静かつ効果的に対応できる方 —— 優先順位の変化やゼロからの構築を恐れない

  • スピードを重視し、完璧を待つよりも「今すぐ価値ある成果」を届けることを優先できる方

  • フィードバックや失敗を成長の一部と捉え、常にレベルアップを目指せる方

  • 謙虚さ、向上心、行動力を持ち、仲間を助けながら進める方

応募資格

  • Transformers、ディープラーニング、ファインチューニング手法(LoRA/QLoRA、SFT、蒸留)に関する豊富な経験

  • PyTorch(優先)または TensorFlow に精通

  • プロンプトエンジニアリングやデータセット構築に熟練し、トーン・安全性・信頼性に合致させられるスキル

  • 評価指標(Perplexity、Toxicity、関連性)に精通

  • ソフトウェアエンジニアリングの基礎(アルゴリズム、データ構造、クリーンコード実践)に強み

あれば望ましい経験

  • テキスト生成、モデレーション、パーソナライゼーションの経験

  • RLHF や LLM における強化学習の経験

  • オープンソース機械学習プロジェクトへの貢献経験

待遇・福利厚生

  • フラットな組織構造と本当のオーナーシップ

  • プロダクト方向性や意思決定への全面的な関与

  • 柔軟な勤務形態

  • プロダクト・データ・エンジニアリングを横断する高インパクトな役割

  • 市場最高水準の給与と成果に基づくボーナス

  • グローバルなプロダクト開発への参画機会

  • 充実した福利厚生 —— 住宅補助、高品質な社員食堂、残業食事補助

  • 健康・歯科・眼科保険

  • グローバル旅行保険(本人および扶養家族対象)

  • 無制限で柔軟な有給休暇制度

チームと文化

私たちは高密度・高パフォーマンスのチームであり、高品質な仕事とグローバルインパクトに注力しています。オーナーのように行動し、スピード、明確さ、徹底的な責任感を重視します。成長意欲があり、卓越性を大切にする方を歓迎します。

会社概要:BJAK

BJAK は東南アジア最大の保険アグリゲーターで、800 万人以上のユーザーを持ち、社員が完全に所有する企業です。本社はマレーシアにあり、タイ、台湾、日本でも事業を展開しています。Bjak.com を通じて、数百万人のユーザーに透明性が高く、手頃な金融保障を提供しています。

また、API、自動化、AI などの先端技術を駆使し、複雑な金融商品をシンプルにし、次世代のインテリジェントな金融システムを構築しています。

現実世界にインパクトを与える AI システムを構築し、高インパクトな環境で急速に成長したい方、ぜひご応募ください。

Transform Language Models into Real-World Applications

We’re building AI systems for a global audience. We are living in an era of AI transition - this new project team will be focusing on building applications to enable more real world impact and highest usage for the world.

This role is a global role with hybrid work arrangement - combining flexible remote work with in-office collaboration at our HQ. You’ll work closely with regional teams across product, engineering, operations, infrastructure and data to build and scale impactful AI solutions.

Why This Role Matters

You’ll fine-tune state-of-the-art models, design evaluation frameworks, and bring AI features into production. Your work ensures our models are not only intelligent, but also safe, trustworthy, and impactful at scale.

What You’ll Do

  • Fine-tune & adapt - Use LoRA/QLoRA to optimize open-source models (LLaMA, Mistral, Gemma)

  • Engineer prompts & curates data - Craft prompts and datasets that reflect tone, brand voice, and safety.

  • Evaluate models – Build metrics pipelines for perplexity, toxicity, and relevance to ensure safe and high-quality outputs.

  • Deploy & monitor – Scale models into production with performance optimization and monitoring for drift.

  • Collaborate & deliver – Partner with product, engineering, and design teams to launch user-facing AI features.

What Is It Like

  • Likes ownership and independence

  • Believe clarity comes from action - prototype, test, and iterate without waiting for perfect plans.

  • Stay calm and effective in startup chaos - shifting priorities and building from zero doesn’t faze you.

  • Bias for speed - you believe it’s better to deliver something valuable now than a perfect version much later.

  • See feedback and failure as part of growth - you’re here to level up.

  • Possess humility, hunger, and hustle, and lift others up as you go.

Requirements

  • Strong experience in transformers, deep learning, and fine-tuning methods (LoRA/QLoRA, SFT, distillation).

  • Proficiency with PyTorch (preferred) or TensorFlow.

  • Skilled in prompt engineering and dataset curation for alignment with tone, safety, and trust.

  • Familiar with evaluation metrics: perplexity, toxicity, relevance.

  • Strong software engineering foundations in algorithms, data structures, and clean code practices.

Nice to Have

  • Prior work in text generation, moderation, or personalization.

  • Experience with RLHF or reinforcement learning in LLMs.

  • Contributions to open-source ML projects.

What You’ll Get

  • Flat structure & real ownership

  • Full involvement in direction and consensus decision making

  • Flexibility in work arrangement

  • High-impact role with visibility across product, data, and engineering

  • Top-of-market compensation and performance-based bonuses

  • Global exposure to product development

  • Lots of perks - housing rental subsidies, a quality company cafeteria, and overtime meals

  • Health, dental & vision insurance

  • Global travel insurance (for you & your dependents)

  • Unlimited, flexible time off

Our Team & Culture

We’re a densed, high-performance team focused on high quality work and global impact. We behave like owners. We value speed, clarity, and relentless ownership. If you’re hungry to grow and care deeply about excellence, join us.

About Bjak

BJAK is Southeast Asia’s #1 insurance aggregator with 8M+ users, fully owned by its employees. Headquartered in Malaysia and operating in Thailand, Taiwan, and Japan, we help millions of users access transparent and affordable financial protection through Bjak.com. We simplify complex financial products through cutting-edge technologies, including APIs, automation, and AI, to build the next generation of intelligent financial systems.

If you're excited to build real-world AI systems and grow fast in a high-impact environment, we’d love to hear from you.

About the job

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Job type

Full Time

Experience level

Mid-level

Location requirements

Hiring timezones

Japan +/- 0 hours

About Bjak

Learn more about Bjak and their company culture.

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Bjak is a technology company focused on making financial services transparent, efficient, and inclusive. Our customers in ASEAN often face challenges in accessing affordable and sustainable financial services, which is why we are dedicated to developing innovative platforms and services to address these needs. Headquartered in Malaysia, Bjak has become the largest insurance portal in Southeast Asia. Our primary platform, Bjak.com, empowers millions of users to find insurance policies that offer the best value and the most comprehensive coverage tailored to their individual requirements. We understand that navigating the complexities of insurance can be daunting, so we've invested heavily in technology like Custom APIs, blockchain, trading systems, and data science. These investments enable us to provide easy access to financial services that were previously inaccessible or difficult to understand, simplifying the entire process for our users.

Our core strength lies in our ability to navigate complex regulatory environments and create pioneering products. For example, Bjak is the first platform globally to simplify and digitize comprehensive life and medical insurance, supported by an AI agent, making these crucial services more approachable. We help Malaysian vehicle owners save significantly on their annual car insurance renewals by allowing them to compare offers from over 10 insurance and takaful operators in under five minutes. This commitment to customer savings and convenience has resulted in millions of users signing up and benefiting from our services. We strive to continuously improve our platform to simplify the online insurance purchase experience, allowing users to choose, compare, and customize their insurance products swiftly and efficiently. Our mission is to make insurance easy, accessible, and rewarding for everyone, fostering a shared and open ecosystem that promotes equality and security in financial services.

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Bjak hiring 機械学習エンジニア(LLM)Machine Learning Engineer (LLM) • Remote (Work from Home) | Himalayas