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Platform Engineer

Platform Engineer

Backend Engineer, AI Platform(AI/ML)

株式会社BALLAS

Bucharestfulltime

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Role description

AIを社会実装するBackend Engineer|図面・設計・調達データをプロダクトへ

Description
AIが扱えない産業データを、AIが扱える形へ

BALLASは、設計・調達・製造・施工にまたがる膨大な業務データを保有しています。

図面、見積、発注、製作図、施工に関するコミュニケーション。

これらは長年、人の経験や暗黙知によって運用されてきた情報です。

私たちは、このデータを構造化し、AIが理解・活用できる状態へ変換することで、建設サプライチェーン全体の生産性向上に挑戦しています。

AI/MLエンジニアが開発したモデルを実際のプロダクトへ組み込み、社会実装するBackend Engineerを募集しています。

具体的な業務

AI・機械学習モデルをプロダクトとして届けるためのバックエンド開発を担当いただきます。

  • AI/MLモデルを利用するAPIの設計・実装
  • FastAPIを用いたAIマイクロサービス開発
  • LLM・マルチモーダルAI機能のプロダクト組み込み
  • Vertex AI、Geminiを活用したAI基盤構築
  • モデル推論基盤の性能改善・スケーリング
  • GraphQL APIの設計・実装
  • AI/MLエンジニアとの協業による社会実装推進
  • SREと連携した運用設計・監視基盤整備

技術環境(2026年6月時点)

フロントエンド

React、Next.js、TypeScript

バックエンド

Python、FastAPI、NestJS、TypeScript、GraphQL、GraphQL

Testing

Jest

AI/ML

Vertex AI、Gemini、Cloud Vision API

Infrastructure

Google Cloud Platform (GCP)、Firebase、Vertex AI、Cloud Vision API、Gemini、Docker、Terraform、PostgreSQL

DevOps

GitHub、Notion、Cursor Agent、Devin、Gemini、Google Cloud Monitoring、Sentry、Google Cloud Monitoring

Design / Collaboration

Figma、Miro、Slack、Notion

このポジションで得られる挑戦

  • AI/MLモデルのPoCから社会実装まで一気通貫で関われる
  • 図面・設計・調達データなど、AIがまだ十分に活用できていない産業データを扱える
  • AI、ソフトウェア、業務オペレーションを横断しながら価値創出に取り組める
  • AI Nativeな産業ソフトウェアの設計・開発経験を積める
  • Backend Engineerとしてだけでなく、AI Platform EngineerやTech Leadへとキャリアを広げられる
  • 急速に進化する生成AI技術を実サービスへ適用し続ける環境で挑戦できる

なぜ、AIだけでは産業は変わらないのか?

多くのAIプロダクトは、既存業務の一部を効率化することに留まっています。

しかし、建設業や製造業のようなリアル産業では、単純な自動化だけでは価値を生み出せません。

そこには

・図面

・仕様書

・見積

・発注

・施工計画

といった膨大な非構造データが存在し、

さらに、

・企業ごとに異なる業務プロセス

・例外だらけの現場判断

・暗黙知に依存した意思決定

が複雑に絡み合っています。

AIが本当に価値を発揮するためには、業務そのものを構造化し、

AIが理解・実行できる状態へ変換する必要があります。

BALLASが取り組んでいるのは、単なるAI活用ではありません。

産業の意思決定をコード化し、再現可能な仕組みとして実装することです。

BALLASとは?

「建設業を最適化し、人々を幸せに。」をミッションに掲げ、建設サプライチェーンをアップグレードするテックカンパニーです。

プラットフォーム運営を通じて設計・調達・製造に携わりながら一次情報を蓄積し、業界の標準化・最適化を推進しています。

リアルなオペレーションをコード化し、AI Nativeな産業インフラの構築を目指しています。

BALLASのプロダクト

BALLASでは「BALLAS SCM」と「BALLAS LINKS」の2つのプロダクトがあります。

・「BALLAS SCM」:自社とパートナー工場様が使うサービスで、設計から製造までのオペレーションをAI Nativeに再設計するためのプロダクトです。

・「BALLAS LINKS」:お客様である建設工事会社様が使うプロダクトです。こちらは、建設工事会社様の内部にある設計・調達プロセスを統合するプロジェクト基盤になります。

今までお客様は、図面の管理にファイルサーバーやクラウド、仕様の協議はメールやチャット、やりとりは口頭と様々なツールを使い分ける状況でした。それを一つに統合することで、認識のズレや余計な工数を大幅に削減できます。さらに、蓄積された作図・購買プロセスデータをもとに、AIによる業務の自動化も進めています。

【参考:BALLASが取り組む課題】

BALLASが挑む建設サプライチェーンの復興──消えゆく町工場と日本の課題

https://youtrust.jp/studio/articles/ballas

代表・木村の起業への想い

なぜBALLASを立ち上げたのか

1400年以上にわたり日本の発展を支えてきた建設業界は、今なお社会インフラを支える巨大産業です。一方で、現場では深刻な職人不足や、アナログで不透明な調達プロセスによる過度な調整負担など、産業全体の生産性を阻害する課題が残されています。

多重請負構造の中で分断されてきた設計・調達・製造・施工のプロセスをデータでつなぎ直し、人とAIが協働できる業務構造へ再設計することで、人が創造的な仕事や本質的な意思決定に集中できる産業を実現したい。

その想いから、BALLASを創業しました。

BALLASが目指すのは、
顧客・パートナーにDXを強制しないDX
です。

建設部材の調達プラットフォーム「BALLAS」は、自らがサプライヤーとして設計・調達・製造に携わりながら一次情報を蓄積し、業界の標準化・最適化を推進しています。「BALLASに頼めば、やり方を変えずに業務が最適化されていく」そんな体験を提供していきたいと考えています。

【参考:サプライヤーBALLASという戦略】

■取締役COO中西「川下から川上へ、サプライチェーンをかえる」

https://note.com/ballas/n/nd8f29e3d2c54

BALLASという組織の3つの魅力

① 産業変革の最前線で、事業と組織の両方をつくるフェーズ

IPOを目指す成長過程にありながら、事業・組織ともに未完成。

仕組みづくりや新たな挑戦の機会が数多くあります。

【参考:投資家対談】

■非住宅分野の工業化(大和ハウス工業とBALLASのチャレンジ)

https://newspicks.com/news/16132298/body/

■AI時代の建設業の在り方(山九株式会社と、BALLASのチャレンジ)

https://note.com/ballas/n/nac0071ddd0dc?magazine\_key\=m2d2c927dffd6

■建設サプライチェーンを絶やさない(日揮株式会社と、BALLASのチャレンジ)

https://note.com/ballas/n/n231c96e140b5?magazine\_key\=m2d2c927dffd6

② AI Nativeな働き方を実践する組織

Claude Code、Cursor、Devin、Gemini などの生成AIツールを組織の標準装備として活用しています。

AIを個人の工夫に留めず、組織の生産性向上につなげる取り組みを推進しています。

【参考:投資家対談】

AIと相性のよいBALLASという事業(Z VCからみたBALLAS)

https://note.com/ballas/n/n8e9b32584463

③ 強みを伸ばしながら成長できる人事制度

マトリクス型キャリアモデルを採用。

マネジメントだけでなく、専門性を高めるキャリアも選択できる環境です。

【参考:BALLASの組織開発】

共同創業者 執行役員 コーポレート本部 責任者益田の記事

https://note.com/ballas/n/nbaa4cb59f8d1

Requirements

  • Pythonのフレームワークを使用したWebアプリケーション開発の実務経験(3年以上目安)
  • Pythonを用いた開発実務経験(3年以上目安)
  • 自社サービス開発・運営を行う企業におけるWebアプリケーション開発の経験(3年以上目安)
  • RDBMS を用いたシステム設計・開発経験
  • Docker に代表されるコンテナ技術を用いたサービス設計・開発経験

Preferred Experiences

  • MLOpsの原則とツールへの精通
  • SaaSプロダクトの開発・運用経験
  • テックリード等の役割で、サービス設計開発を主導した経験
  • AWS、GCP、Azure などのパブリッククラウドについて、IaCツールを用いてインフラ構築を行い運用した経験
  • コンピュータサイエンスの専攻
  • 建設業界のドメイン知識(なくてもキャッチアップ可能)
  • Next.js/TypeScriptを利用したフロントエンド開発経験
  • Nest.js/TypeScriptを利用したバックエンド開発経験

We are looking for

  • AIモデルを作るだけでなく、社会実装まで責任を持ちたい方
  • AI・ソフトウェア・業務オペレーションを横断して価値創出に取り組みたい方
  • API設計やシステムアーキテクチャに関心がある方
  • LLMやマルチモーダルAIを実プロダクトへ組み込むことに興味がある方
  • AI Nativeな産業ソフトウェアをゼロから作りたい方

一緒に働くメンバー

メンバー例

■プロダクト開発部 責任者 濱田

AI Nativeなプロダクト開発

https://note.com/ballas/n/n17474f6ad1c2

■テックリード 片岡

コミュニケーションと情報の最適化で「良いモノづくり」を実現

https://note.com/ballas/n/ncd9a27ac3c4f?magazine\_key\=mf040e7ab6852

■設計DX 大関

リアル×テックで進化する設計 – 構造から変える、建設業の未来

https://note.com/ballas/n/nda4feb73969f?magazine\_key\=mf040e7ab6852

TEAM BALLAS

平均年齢は32.4歳。

若い組織でありながら、設計・施工・調達・生産管理など、それぞれの領域で実務経験を積んだプロフェッショナルが集まっています。

職種や役職に関わらず、互いを尊重しながらフラットに議論し、より良い顧客価値の創出に向き合っています。

また、BALLASには11条からなる「BALLAS信条」があり、メンバー一人ひとりが以下のような価値観を大切にしています。

  • ゴール思考
  • 組織での付加価値最大化
  • 他責にしない

こうした価値観を共有しながら、産業変革に挑戦しています。

Working Conditions

Salary

  • 想定年収800万~1200万円
  • 月給制

※専門業務型裁量労働制を導入

Location

①神田オフィス

東京都千代田区神田須田町2-1-1 MA SQUARE AKIHABARA 5階

②大阪オフィス

大阪府大阪市中央区平野町3-1-6 BizMiiX Yodoyabashi 3階

※配属は応募者様の希望に応じて決定

※リモート勤務可(週1回の出社想定)

Job Type 正社員 Work hours

  • 専門業務型裁量労働制
  • 1日のみなし時間:8時間00分
  • 年間休日120日(内訳:完全週休二日制、土曜、日曜、祝日、年末年始)
  • 有給休暇:入社日に10日付与、入社日後6か月を経過した日に10日付与、入社日後1年ごとに20日付与

Probation period 有 3か月(最大6か月、試用期間中の勤務条件:有機雇用契約) Benefits

■ AI Nativeな組織

Claude Code、Cursor、Devin、Gemini などの生成AIツールの利用可能。

AIを個人利用のツールではなく、組織の標準装備として位置づけています。

日々の情報収集、ナレッジ共有、資料作成、意思決定支援などに生成AIを活用し、人がより本質的な課題解決や創造的な仕事に集中できる環境づくりを進めています。

■ その他

社会保険完備(健康保険・厚生年金・雇用保険・労災保険)

業務用PC貸与

書籍購入、資格取得、セミナー参加等の学習支援制度

カフェ代補助

AIツール利用環境の提供

Company information

Name 株式会社BALLAS Established 2022年2月 Headquarter Location 東京都中央区銀座一丁目22-11 銀座大竹ビジデンス2階 Capital 100,000,000円 Employees 60名(2024年7月時点)

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Platform Engineer

Agentic AI Architect

Undelucram.ro

Bucharestfulltimelead

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Role description

Undelucram.ro on behalf of:

Capgemini Romania
Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

About The Job
We are building an enterprise-grade agentic AI platform for a major telecommunications client, focused on network operations. The platform helps operations teams triage events, run diagnostics, and drive incident and change workflows by reasoning over large volumes of internal network knowledge (alarms, tickets, vendor documentation, process data). It is evolving from a single retrieval-augmented assistant toward a multi-agent operations platform with progressively higher levels of autonomy, always under strict human-in-the-loop and data-protection controls. The solution runs on Google Cloud and aligns to the client's central AI engineering and architecture standards.

We are looking for a senior architect to own the end-to-end agentic architecture and steer a nearshore delivery team.

YOUR ROLE

  • Design a modular multi-agent architecture (planner, executor, memory, tool interfaces) and the orchestration and task-handoff logic between agents
  • Define autonomy levels, decision boundaries, and human-in-the-loop controls for operational use cases
  • Architect RAG and long-term memory across multiple enterprise knowledge sources; set model-selection and LLMOps patterns on GCP / Vertex AI (Gemini)
  • Embed guardrails, fallback mechanisms, and GDPR / data-protection compliance into the design
  • Define the evaluation and safety-testing strategy (task completion, hallucination detection, bias) and the release quality gates
  • Steer junior and nearshore developers, review delivery, and uphold architectural standards
  • Interface with client stakeholders and the central AI architecture function on standardisation and scale

YOUR PROFILE

  • 7+ years in AI/ML, including hands-on GenAI and agentic systems
  • Deep, hands-on GCP experience (Vertex AI, Agent Development Kit / ADK), RAG, and LLMOps
  • Proven multi-agent and orchestration design
  • Strong grasp of guardrails, evaluation, and responsible-AI / data-protection practices
  • Able to lead a distributed delivery team and communicate with senior client stakeholders
  • Telco or network-operations domain experience a plus

WHAT YOU'LL LOVE ABOUT WORKING HERE:

  • Flexible and dynamic work environment involving teams spread across different global locations;
  • Communities with shared interests and identities, all working together to advance diversity, equity and inclusion within the workplace and society;
  • Do you want to learn more? You will have access to various training programs and platforms (e.g.: content provided by Pluralsight, Harvard and Coursera);
  • Attractive benefits package (meal tickets, medical services, Benefit online, Employee Share Option Plan).

Capgemini is an equal opportunity employer. We promote equality and dignity in all aspects of recruitment and employment, and all offers of employment and promotions are made on the basis of performance, competence and ability.

About Us
Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2024 global revenues of €22.1 billion.

Make it real | www.capgemini.com

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Platform Engineer

Test Automation Engineer (m/f/d)

Retarus (Schweiz) AG

Bucharest

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Role description

Retarus is a worldwide provider of cloud-based messaging solutions at enterprise scale. We serve over 40% of the companies listed on the S&P Global 100, e.g.
Adidas, Bayer, SAP, BNP Paribas, Goldman Sachs, T-Systems, Swarovski
&
UPS
, as well as governmental agencies and major players in markets across the world. Privately owned and founder-managed for over thirty years, Retarus is customer-oriented, stable, a fair employer, and a strategic business partner with a long-term vision. With some 500 employees in 19 offices on four continents, Retarus operates locally and thinks globally: our teams are organized across borders and are highly integrated. This makes Retarus a multicultural, multilingual, and engaging workplace. We are committed to creating a diverse and dynamic environment for our employees, with generous compensation, time off, and a global, collaborative workplace.

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Platform Engineer

Senior Collaboration Engineer (Exchange Online)

Tchibo

Bucharest

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Role description

Digital. Inspiring. Unique.
Tchibo is one of the ten largest eCommerce companies in Germany. We could never have attained this standing without the courage to constantly rethink the old ways.

In the digital world at Tchibo, we work with the latest technologies to develop sustainable and effective solutions. Do you want to help us do this? Enrich our team with your fresh ideas!

Your tasks: You make a difference with us.
Tchibo is one of the ten largest eCommerce companies in Germany. We could never have attained this standing without the courage to constantly rethink the old ways. In the digital world at Tchibo, we work with the latest technologies to develop sustainable and effective solutions. Do you want to help us do this? Enrich our team with your fresh ideas!

This position is located in Bucharest, Romania.
Environment
:

The team is responsible for the Tchibo datacenter operations and M365 cloud workloads. The team is already working with international colleagues in Europe and Asia. Our vision is to become serverless and bring our services to the cloud where possible.

The role will be responsible for the Tchibo Exchange Online environment and decommissioning the Exchange servers. In addition to this the role will be responsible for the Exchange Online architecture and thinking forward with the M365 capabilities.

Technologies:
Active Directory, Entra ID, Exchange Server, Exchange Online, E-Mail-Security, M365 Administration

General Tasks:

  • Plan and execute the full migration from our hybrid Exchange environment to a pure Exchange Online solution, taking ownership of the project
  • Decommission the legacy on-premise Exchange infrastructure in a structured and controlled manner
  • Manage, secure, and continuously optimize the Exchange Online environment post-migration, acting as the long-term operational owner of the platform
  • Automate administrative tasks and recurring processes to increase efficiency and reduce manual effort
  • Implement and enforce security best practices within the Exchange Online environment (e.g., mail flow policies, data loss prevention, access controls)
  • Collaborate closely with adjacent teams, in particular the Microsoft 365 and Entra ID teams, to ensure seamless integration across the platform
  • Manage and optimize Exchange-related configurations in Microsoft Entra ID (e.g., hybrid identity, authentication policies)
  • Support day-to-day operations, including incident response, monitoring, and performance analysis of the Exchange Online environment and our daily operation shifts
  • Contribute to the continuous improvement of our broader Microsoft 365 ecosystem by sharing expertise and aligning with platform-wide standards and best practices
  • Act as an owner of the global documentation of our Exchange Online environment

Your profile: You keep discovering with us.

  • 3–5+ years of hands-on experience in a Microsoft 365 or Exchange administration/engineering role
  • In-depth knowledge of Exchange Online, including mail flow, transport rules, data loss prevention, anti-spam/anti-phishing policies, and mailbox management
  • Proven experience with hybrid Exchange environments (on-premises Exchange combined with Exchange Online), including migration projects
  • Solid understanding of Active Directory, Microsoft Entra, particularly in the context of Exchange and Entra ID
  • Experience with PowerShell scripting for automation of administrative tasks and processes is essential
  • Good understanding of email security standards and protocols (e.g., SPF, DKIM, DMARC, TLS)
  • Familiarity with Microsoft 365 monitoring and reporting tools (e.g., Microsoft Defender for Office 365, Exchange Admin Center, Microsoft 365 Admin Center)
  • A collaborative mindset with strong communication skills and the ability to work effectively with cross-functional teams
  • Experience with using AI in your daily business
  • Very good knowledge of English; German is an advantage

Nice to have:

  • Knowledge of Microsoft Teams and SharePoint Online, and how they integrate with Exchange Online
  • Experience with IT service management processes (e.g., ITIL), particularly in the context of incident and change management

Basic understanding of Azure services and how they interconnect with the Microsoft 365 ecosystem (e.g., Azure Functions, Azure Logic Apps, Azure Monitor)

Your Benefits: Together We Stay Different

  • Work-Life Balance : Flexible hybrid working policy, 26 vacation days + your birthday off.
  • Perks : Monthly transport allowance, meal tickets, health & life insurance.
  • Coffee Lovers Welcome : Free Tchibo coffee for home and office.
  • Innovative Work Culture : You’ll work on impactful projects in a collaborative and open-minded team.
  • Diversity & Inclusion : A place where your perspectives and ideas are valued.

Our job suits you? Then we are looking forward to your application! It's super fast: upload attachments, our motivation questions answer - done.
Without a cover letter
!

Please contact our recruitment department at: recruiting.tech@tchibo.ro
. You have questions? Simply contact our recruiting support at +49 40 6387 3353.

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Platform Engineer

AI Solution Architect

Accenture Romania

Bucharest

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Role description

Job Description
If you are a senior AI and software engineering professional with a strong background in designing and delivering production-grade AI systems, we invite you to join Accenture's fast-growing Artificial Intelligence Platform and work as part of a worldwide team of experts. In this role, you will shape the architecture of advanced AI solutions across multiple client engagements, working closely with delivery teams, product stakeholders, and business leaders. You will define end-to-end scalable, reliable and cost-efficient AI architectures, contribute to technical solutioning in business development initiatives and help evolve our platform's AI engineering practices.

Our future colleague will do

  • Define end-to-end scalable, resilient and efficient architectures for advanced AI systems (including data pipelines, model training and serving, retrieval systems, monitoring, and governance) in multi-stakeholder environments, balancing client needs, technical constraints, timelines, and costs;

  • Collaborate closely with delivery teams to translate architectural designs into work items and identify and resolve architectural challenges during project execution;

  • Own or contribute to technical solutioning in business development initiatives, including proposal input, architecture design, and effort estimation;

  • Mentor senior engineers and contribute to raising architectural and engineering maturity across teams;

  • Pilot and evaluate emerging tools and AI technologies.

What Will Help You Succeed

  • Strong experience designing and delivering production-grade AI software systems across different domains;

  • Proven expertise in designing and/or implementing generative AI systems in production, including agentic systems, RAG pipelines, tool-use patterns, and model adaptation strategies (e.g., fine-tuning of open-source LLMs or diffusion models);

  • Practical experience in retrieval and knowledge systems, e.g., Vector DBs (Pinecone, Chroma, etc.), ingestion frameworks (Kafka, Debezium, etc.), Graph DBs (AWS Neptune, Neo4j);

  • Breadth of knowledge across modern AI technologies, including generative models, deep learning, and predictive ML;

  • Solid knowledge of cloud-based AI platforms, infrastructure concepts, and MLOps practices, including containerization, orchestrated and/or serverless deployment, monitoring, versioning and governance;

  • Strong client-facing communication skills, with the ability to reason clearly about trade-offs involving performance, cost, risk, and maintainability;

  • Collaborative mindset and mentorship-oriented approach to technical leadership.

What We Expect

  • 6+ years of professional software engineering experience, including work on distributed, large-scale systems;

  • 3+ years of hands-on experience in data science and machine learning projects delivered into production;

  • Affinity for multi-layered AI system design in various contexts and use cases (e.g., end-to-end AI systems, Agentic platforms, workflow engines, etc.);

  • Experience using cloud-based AI platforms (e.g., Azure ML, AWS SageMaker, or equivalent);

  • Working knowledge of MLOps methodologies, including CI/CD, monitoring, and governance;

  • Proven progression from hands-on implementation to system-level architectural responsibility.

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Backend Engineer, AI Platform(AI/ML)株式会社BALLAS · Romania

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