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トラスト開発エンジニア／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Builds trust-related services at Cyberlinks — digital certificates (CloudCerts), e-contracts, and authentication leveraging My Number Card and blockchain — owning everything from requirements through development and testing. Stack is React/TypeScript on the frontend and Node.js/PostgreSQL (Keycloak, Redis) on Linux, based in Osaka or Wakayama.
システムエンジニア／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Systems engineer at Enercom, the ICT company of the Chugoku Electric Power Group, in Matsue, Japan. Day to day: extending, building, and maintaining power plant equipment/maintenance management systems and group services, covering infrastructure work across networks, servers, security, and cloud/AWS, with flextime and some remote work.
システムエンジニア／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
In-house systems engineer at DAIWA (Sendai HQ) developing the company's own package 'Nutrimate' — a nutrition/meal-management system for hospitals and welfare facilities — plus other in-house products and contracted systems, including customer rollout support. Main languages: C, Java, and VB.NET.
総合職（QAエンジニア・PL・ITコンサルタント）／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
------------------------------------------------ ■ この求人のポイント ------------------------------------------------ 【多彩なキャリアパス◎】ベンチャースピリッツが根ざすチャレンジングな環境の中で技術力を磨きませんか？…
バックエンドエンジニア／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Backend/system engineer at SAKURUG in Tokyo: designs and builds server-side applications with Java, C#/.NET, VB.NET, and Node.js, covering database design and optimization, AWS/Azure/GCP infrastructure, performance tuning for large-scale traffic, and CI/CD pipelines. Projects include a recruiting-matching platform, metaverse content, and a core-system migration.
ITインフラ・ネットワークエンジニア／ネットワーク設計・構築（LAN・WAN・インターネット）
------------------------------------------------ ■ この求人のポイント ------------------------------------------------ 【ニーズ拡大中◎昨年度は過去最高利益を達成！】世界トップクラスシェアの自社開発システムを手掛ける…
WEBエンジニア／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Backend web/system engineer on the 20-person team behind "CASHIER", a sales-management platform spanning food, retail, and fintech — adding features, maintaining and operating web apps (takeout/EC apps, public APIs, inventory and table-order systems). Stack: PHP/Laravel, Python/FastAPI, React/Vue.js, AWS/RDS, Docker.
フロントエンドエンジニア／プログラマー（WEB・オープン・モバイル系）
Frontend engineer at SAKURUG building web and mobile UIs with React and Vue.js — screen design, responsive layouts, performance optimization, API integration, and automated tests. Projects run 3–12 months, often embedded at client sites across Tokyo, Saitama, and Kanagawa, with mentor 1-on-1 support.
プロジェクトマネージャー／プロジェクトマネジャー・リーダー(WEB・オープン・モバイル系）
A playing-manager role: sub-leader at the Tokyo branch of an SIer, developing systems (e.g., payroll and invoice management) for large manufacturing and service-industry clients using .NET and Java, while supporting the leader and mentoring team members.
Webアプリエンジニア（テックリード）／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Tech lead for web application development of OPTiM's own smart-agriculture service: owns architecture design and tech selection, drives requirements definition and new feature development, builds AI-assisted dev workflows (Claude Code, Codex), and improves performance using Go and React. Hybrid work (3 office days/2 remote) across Tokyo, Kobe, Iizuka, or Saga offices.
社内SE／システムエンジニア（DB・ミドルウェア設計／WEB・オープン・モバイル系）
In-house systems engineer at Rigaku, a world top-share maker of X-ray analysis instruments: implement, operate, and maintain core systems (production control, sales, logistics), launch and improve the ERP SyteLine (CSI10) and system integrations, and plan IT infrastructure and DX initiatives while collaborating with global sites.
開発SE／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Systems engineer at Nihon Process, a company specializing in high-reliability control/embedded systems for social infrastructure (automotive, railways, power plants). The role covers system proposal, development and maintenance of application systems — e.g. an Earth-observation satellite ground system — using Java/C++/JavaScript on Windows/Linux with Git/SVN.
データエンジニア／システムエンジニア（DB・ミドルウェア設計／汎用機系）
Data engineer/system engineer at CrowdChem, a startup bringing AI- and data-driven R&D to Japan's chemical and materials industry. You design and build DWHs, data marts, and data pipelines for enterprise client projects, covering rollout, operations, and monitoring, using Python, Java, Scala, and SQL.
インフラエンジニア／ネットワーク設計・構築（LAN・WAN・インターネット）
Infrastructure engineer at SAKURUG designing and building network (LAN/WAN/Internet) and cloud infrastructure on AWS/Azure/GCP, including CI/CD pipelines, IaC, security policies, and troubleshooting, on client projects in telecom, insurance, and finance. Based at the Shibuya HQ, with client-site work across Tokyo, Kanagawa, and Saitama.
DX推進プロジェクトリーダー／プロジェクトマネジャー・リーダー(WEB・オープン・モバイル系）
DX promotion project leader/PM at Wired Beans in Sendai: planning and proposing DX initiatives, requirements definition, basic design and user stories, managing project progress, and coordinating with clients and external vendors. Work centers on the Salesforce platform (Sales/Service/Marketing/Experience Cloud, Tableau) using Apex, JavaScript, and SQL.
モバイルエンジニア／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Mobile engineer at OPTiM, a TSE Prime-listed AI/IoT company, developing its own mobile products: requirements definition and architecture design in the upper process, iOS (Swift/Objective-C) or Android (Kotlin/Java) app implementation and testing, plus refactoring and LLM/AI-assisted development efficiency. Hybrid work from the Tokyo (Minato) HQ with up to 2 remote days per week.
Web開発（オープンポジション）／システムエンジニア（アプリ設計／WEB・オープン・モバイル系）
Open-position web/system engineer at OPTIM, a TSE Prime-listed AI/IoT company developing its own AX products for healthcare, construction, government, and AI camera analysis. Engineers join backend, frontend, mobile, infra, or QA projects using Go, Python, TypeScript, Swift, and C++, working from Tokyo, Kobe, Iizuka, or Saga offices with remote work available.
システムエンジニア(PM/PL候補）／パッケージ導入コンサルタント（ERP・SCM・CRM等）
System engineer / package implementation consultant (ERP, SCM, CRM) who designs and builds DX solutions on the company's own cloud products and third-party SaaS (kintone, Salesforce, Bugyo Cloud). Day to day: client hearings, requirements definition, customization and React development, system rollout and operations support, with a path toward PM/PL roles.
社内SE／社内システム開発・運用
In-house SE at a Niigata-based kamaboko (fish cake) food manufacturer, developing and maintaining internal sales, production, and inventory management systems, plus Windows server and SQL Server database operations. Requires 3+ years' SE/programmer experience; SQL skills preferred.