29.09.2026 aktualisiert

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Lead Engineer | Fullstack Developer | Next.js | Typescript | Node.js | 16+ years of experience

Frankfurt am Main, Deutschland
Weltweit
BCA
Frankfurt am Main, Deutschland
Weltweit
BCA

Profilanlagen

CV_Arun_Rao_FullStack.pdf
Arun_Rao_Selected_Work_Portfolio.pdf

Über mich

Full-stack engineer and engineering lead, 16+ years. Engineering Lead at PwC Germany (PwC Store, federal gas price relief app), ex-CTO GastroSmart. Senior Software Engineer at 58agents GmbH, Frankfurt. Hands-on TypeScript/Next.js/Node.js architect. German working hours, remote or onsite.

Skills

Tailwind CSSAzure DevOpsAgile MethodologieKünstliche IntelligenzArchitekturWeb-Content-Management-SystemeContinuous IntegrationE-CommercePostgreSQLNode.jsRedisNext.jsTechnische LeitungTypeScriptReact.jsLarge Language ModelsBackendKubernetesFull Stack EntwicklungGraphQLNestJSRestful ApisDockerMicroservices
Senior Full-Stack Engineer and Tech Lead, 16+ years building web platforms, e-commerce, B2B SaaS, internal tools and public-sector applications, plus the cloud and AI work around them. Five years of delivery in Germany (PwC Germany, DataGuard, GastroSmart); experienced with German enterprise and public-sector delivery standards. Employed as Senior Software Engineer by 58agents GmbH, Frankfurt am Main; client projects are contracted through 58agents GmbH.
Core stack TypeScript, JavaScript, Node.js, Next.js (App Router, SSR, ISR), React, NestJS, Express.js, Vue.js, GraphQL, REST APIs, PostgreSQL, Redis, MongoDB, BullMQ, Docker, Kubernetes, CI/CD, Azure DevOps, GitLab, Git
Architecture and platforms Multi-tenant architecture, microservices and monoliths, headless commerce, headless CMS (Payload CMS, DatoCMS, SULU migration), distributed systems, job queues and worker orchestration, event-driven workflows, API design, system integration (accounting, commerce, ERP, payment)
Cloud and DevOps Azure, AWS, Hetzner, Contabo, Coolify, Kubernetes, self-hosted infrastructure, secure government hosting, OpenTelemetry, monitoring, CI/CD pipelines, deployment automation, Shift-Left security
Frontend and UI React, Next.js, Vue.js, Tailwind CSS, shadcn/ui, Storybook, Framer Motion, PWA, responsive design, Core Web Vitals optimisation, design systems
AI LLM integration (Claude API, Gemini, OpenAI-compatible APIs), RAG pipelines (chunking, embeddings, vector search), streaming chat, tool-calling and agentic workflows, AI-native internal tooling, evaluation and prompt iteration
Leadership Engineering Lead, Tech Lead, CTO, software architecture, team building and mentoring, agile delivery (Scrum, Kanban), technical roadmaps, stakeholder management, external-specialist coordination
Industries Professional services and e-commerce (PwC), public sector (German federal relief application, GIGW 3.0 compliant government website), healthcare and catering (GastroSmart), privacy and legal tech (DataGuard), mobility (Ola), developer tools (HackerRank), B2B SaaS, retail, POS

Notable achievements
  • Engineering Lead for the PwC Store, a multi-tenant Next.js e-commerce platform serving PwC territories worldwide: re-architecture, App Router migration, CMS migration to DatoCMS, measurable performance and sales gains (2021 to 2026)
  • Led the end-to-end build of the Soforthilfe & Preisbremse Gas und Wärme application for the German federal government, used by energy companies nationwide to claim billions of euros in relief, delivered under an exceptional deadline to government-grade security
  • CTO of GastroSmart 3, a B2B process-management platform for large kitchens, catering and care organisations
  • Built a distributed B2B email-verification platform (SMTP workers, BullMQ, real-time dashboard) and an offline-first POS platform with cloud sync and card-terminal integration

Remote with full CET overlap, open to onsite assignments in Germany. Working language English; German A1.

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2024

Sprachen

DeutschGrundkenntnisseEnglischMuttersprache

Projekthistorie

Senior Software Engineer (permanent) · IT Consulting · Client projects across Germany

58agents GmbH, Frankfurt am Main

Internet und Informationstechnologie

10-50 Mitarbeiter

Role:Permanent employment as Senior Software Engineer at 58agents GmbH, Frankfurt am Main. Client projects are contracted and invoiced through 58agents GmbH; I work as an employed consultant, not as a self-employed freelancer.

Focus:Full-stack product engineering on TypeScript, Next.js, React, Node.js and PostgreSQL, including LLM integration, cloud infrastructure and technical leadership for client engagements across Germany.

Technologies & methods:TypeScript, Next.js, React, Node.js, NestJS, PostgreSQL, Redis, Docker, Kubernetes, CI/CD, LLM integration, Agile

Engineering Lead (freelance via 58agents GmbH) · PwC Store · Client: PwC Germany

58agents GmbH, Frankfurt am Main

Internet und Informationstechnologie

10-50 Mitarbeiter

Engagement:Freelance engagement contracted through 58agents GmbH, Frankfurt am Main, continuing as Engineering Lead on the PwC Store for PwC Germany after leaving PwC's payroll in 08/2024. Fully remote, working in CET hours.

Project description:Multi-tenant e-commerce platform delivering a digital-products commerce experience across PwC territories worldwide.

Tasks & responsibilities:


Technologies & methods:Next.js, TypeScript, React, Node.js, DatoCMS, GraphQL, Storybook, Azure DevOps, Kubernetes, CI/CD, Agile

CTO and Technical Lead · Cloud-based process-management platform for large-scale

GastroSmart

Internet und Informationstechnologie

< 10 Mitarbeiter

kitchens, catering providers, canteens, and care organisations.
  • Held full responsibility for leading the development of GastroSmart 3, a complex B2B platform covering menu planning, inventory, purchasing, ordering, and kitchen production workflows.
  • Worked directly with the founder as the technical counterpart for product development, architecture, prioritisation, and delivery planning.
  • Translated detailed operational requirements into user stories, milestones, and agile development sprints.
  • Assembled and led the development team, coordinating internal developers and external domain specialists.
  • Directed technical decisions across architecture, implementation, documentation, deployment, maintenance, and production handover.
  • Balanced customer commitments, delivery timelines, team capability, technical quality, and project costs.

Engineering Lead

PricewaterhouseCoopers GmbH WPG (PwC Germany, Munich)

Wirtschaftsprüfung, Steuern und Recht

500-1000 Mitarbeiter

Project description:
Multi-tenant e-commerce platform delivering a digital-products commerce
experience globally across PwC territories. Responsible for development and
delivery of the platform and for the growth and success of the development team.

Tasks & responsibilities:
  • Re-branding the entire PwC Store along with Pages Router to App Router Migration
  • Improved Performance and load times leading to improved traffic and sales
  • Re-architected the platform, resulting in improved performance and a more streamlined user experience
  • Led the migration from SULU (PHP-based CMS) to DatoCMS (SaaS headless CMS)
  • Delivered key front-end features and maintained code quality and technical excellence
  • Led and mentored the development team, fostering a positive and supportive engineering culture

Technologies & methods:
Next.js, TypeScript, React, Node.js, DatoCMS, GraphQL, Storybook, Azure
DevOps, Agile, CI/CD

Engineering Lead · German Federal Government · Public Sector

(PwC) Soforthilfe & Preisbremse Gas und Wärme

Wirtschaftsprüfung, Steuern und Recht

1000-5000 Mitarbeiter

Project description:
National application for the German federal government, used by energy companies
across Germany to receive reimbursement worth billions of euros under the
emergency-aid and price-control scheme for gas and heating.

Tasks & responsibilities:
  • Led the end-to-end effort from architecture and development through deployment and maintenance
  • Delivered to exceptional quality and top-level security within an unprecedented timeframe
  • Built the application to meet high-stakes, high-scrutiny, government-grade requirements at scale

Technologies & methods:
Next.js, TypeScript, React, Node.js, PostgreSQL, secure government hosting,
CI/CD, Shift-Left

Senior Frontend Developer · Privacy & Compliance SaaS

DataGuard Munich

Internet und Informationstechnologie

50-250 Mitarbeiter

Project description:
Privacy and compliance SaaS. Led the transition of the core web application to a
modern Vue.js single-page architecture and built secure document-handling
features.

Tasks & responsibilities:
  • Implemented the Vue.js SPA architecture and executed the transition from Ruby on Rails to the Vue.js SPA
  • Developed the Documentation Dashboard for secure upload and download of sensitive documents
  • Established secure communication between the Rails API and Vue.js using JWT authentication and express.js proxies
  • Built the Data Subject Request (DSR) JavaScript plugin and client-side dashboard from the ground up to production
  • Built components with Storybook.js and Tailwind CSS; mentored junior front-end developers

Technologies & methods:
Vue.js, JavaScript, Ruby on Rails, JWT, Express.js, Storybook, Tailwind CSS, Agile

Senior Software Developer · Mobility

Ola (ANI Technologies Private Limited)

Automobil und Fahrzeugbau

500-1000 Mitarbeiter

Tasks & responsibilities:
  • Developed the Ola Drive feature application from the ground up and integrated it into the Android and iOS apps
  • Integrated the Foodpanda PWA into the Ola app using Vue.js and API integration
  • Implemented GDPR regulations for Olacabs.com and localized the book.olacabs.com PWA
  • Designed and built the front-end for Ola Leasing, Repair & Maintenance, and the SEO-friendly, responsive Ola Partner website

Technologies & methods:
Vue.js, Angular.js, JavaScript, jQuery, HTML / CSS, PWA, Sketch, Agile

Web Developer · Developer Tools

Hackerrank

Internet und Informationstechnologie

500-1000 Mitarbeiter

Tasks & responsibilities:
  • Front-end development of HackerRank Community, HackerRank for Work (B2B), and CodePair
  • Maintained UI guidelines and built HTML templates for contests and promotions
  • Designed and developed error-free transactional and newsletter email templates
  • Performed performance testing and page-speed optimization

Technologies & methods:
HTML, CSS, BackboneJS, jQuery

Web Developer · Photography Platform

Canvera Technologies Private Limited

Internet und Informationstechnologie

500-1000 Mitarbeiter

Tasks & responsibilities:
Front-end development of the Canvera Photobook product using TurnJS for an immersive, book-like experience
Built the photographer-search UI and maintained and enhanced the canvera.com website

Technologies & methods:
TurnJS, JavaScript, HTML, CSS, jQuery

Web Developer · Cross-industry

Freelancer

Internet und Informationstechnologie

< 10 Mitarbeiter

Tasks & responsibilities:
  • Built custom websites for small businesses, startups, and large corporations across diverse industries
  • Delivered high-quality, responsive websites tailored to each client's needs and goals
Technologies & methods:
HTML, CSS, JavaScript, jQuery, PHP

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