JavaScript Experts in Stuttgart

Sercan T.

Certified Professional for Software Architecture Foundation Level

Esslingen am Neckar

Last position:

Co-Founder & Lead Software Architect at Pflege-Pfad

Focus: System architecture, cloud-native platforms, microservices, API design
Product: Pflege-Pfad is a digital placement platform that directly connects relatives of people in need of care with verified care services and caregivers – without an agency and without ongoing fees.
Business analysis & process design:
Analysis of the German care market and identification of the key pain points of both target groups.
Modeling of core business processes: registration, verification, care request, application, placement, and rating.
Definition of the business model as a freemium/premium model with optional contact unlocking.
Creation of user stories and requirements documentation for relatives, care services, and administrators.
Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
Coordination with stakeholders and validation of product decisions with potential users.
Technical implementation:
Design and implementation of the entire platform architecture as the sole developer.
Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
Development of the frontend as a single-page application with Angular 17.
Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
Document upload with AWS S3 using presigned URLs to verify care services.
Email notifications via Resend API.
AI-supported care service search via OpenAI API.
Implementation of complete user flows such as registration, login, password reset, and the placement process.
Development of an admin panel for user and care service management as well as analytics.
CI/CD with GitHub Actions and containerized deployments with Docker.
End-to-end tests with Playwright.

Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature flag architecture.

Carlos M.

Implementation in Pimcore/Shopware

Last position:

Implementation in Pimcore/Shopware

Consulting, design, analysis, software architecture and development
Design, development and implementation of a Pimcore environment and connection of several external API systems in a Kubernetes environment, as well as various PIM and ERP systems
Technologies: Unix environment, design, Symfony development, design, PHP 8+, software architecture, MySQL/SQL, Shell Script, Git Dev Ops tasks, AI coding assistance, Pimcore 12, Shopware 6
Team size: >10 people

Karin A.

Language Expert – Python Developer – AI Engineer

Leonberg

Last position:

AI Benchmark Engineer | Native language specialist German at Lilt

Task Engineering: Evaluating Coding Agents.
Asset Creation: Building realistic task environments using datasets and files in German. Crucially, these assets must remain in the target language to genuinely measure multilingual handling.
Prompting & Translation: finding failure points where AI does not work, in German.
Implementation & Verification: Supporting the development of robust solutions (reference implementations) and write highly reliable, deterministic verifier scripts (using rubric-based judging only when strictly necessary).
Calibration & Execution: Analyze execution logs and calibrate task difficulty (Easy to Very Hard) using standard Terminal-Bench run configurations against various model tiers (Haiku, Opus).
Quality Assurance: Participation in a rigorous, 4-layer human quality control process (creation, human review, calibration review, and audit) alongside automated LLM-based checks to ensure fairness, grammatical accuracy, and benchmark integrity.
Linguistic Review: Reviewing AI benchmark tasks across Hindi, Arabic, Japanese, Chinese, Czech and Turkish.

Ronald F.

Senior IT Consultant

Last position:

Senior IT Consultant – Requirement Engineer at Deutsche Bank - Strivion

Methodology: Agile project management

Goal: Digitization and implementation of CCD2 requirements within the Consumer Finance systems.

Analysis, identification, and assessment of business requirements, as well as their transfer into technical implementation requirements. Coordination and status reporting of the various requirements. Documentation and process management using UML and BMPN. Cross-functional stakeholder management, UAT testing, data management, API architecture management.

Tools: Jira, Confluence, Visual Code, Sql Developer, Enterprise Architect, MsOffice, Bruno, ALM, Camunda, Figma

Artyom N.

Senior Software & Cloud Consultant

Ludwigsburg

Last position:

AI Automation Engineer & Solution Architect at Technology Research Project

Designed and developed an AI-powered automation platform using n8n to analyze social media niches, identify target audiences, and automate marketing strategy generation. The solution combined AI agents, workflow orchestration, and data analysis to automate research processes and generate data-driven insights.

Designed and implemented complex automation workflows using n8n
Developed AI-powered analysis agents for market and audience research
Integrated multiple APIs and AI services into automated workflows
Built automated market, competitor, and target audience analysis pipelines
Leveraged Large Language Models (LLMs) for information summarization, classification, and prioritization
Containerized and deployed the platform using Docker

Technologies: n8n, AI Agents, OpenAI APIs, Prompt Engineering, LLMs, Docker, Linux, REST APIs, Webhooks

Alexander Z.

Fullstack Developer and DevOps Engineer

Last position:

Fullstack Developer and DevOps Engineer at Freelancer

Developing the infrastructure and improving existing infrastructure: Jenkins, Gitlab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
Documenting solutions in Jira/Confluence
Supporting other colleagues in different technical areas

Emmanuel L.

Fullstack Developer · PHP/Laravel, React/Next.js and Java

Last position:

Founder and sole developer

Development of a SaaS platform for esports teams with roles, planning, statistics and billing
Design and implementation of the architecture, external API integrations and operations
Stack: Laravel 13, React 19, TypeScript, PostgreSQL, Redis and Stripe

German R.

Freelance Technical Product Owner & AI Product Builder

Last position:

Freelance Technical Product Owner & AI Product Builder at Neckarshore AI / Freelance

Two complementary tracks: (a) building my own AI products and open-source tools under the Neckarshore AI brand, with a focus on AI-supported multi-agent development processes and documentation automation; (b) freelance support for industrial, logistics, and financial companies in IT-related transformation projects.

Current product portfolio under the Neckarshore AI brand:

Omnopsis Documenter — AI-powered documentation engine: generates compliance, technical, and release documentation from Git, Jira, and Confluence. 500+ automated tests, 100+ API endpoints, RBAC, monitoring stack.
TrustScope — trust analysis for public GitHub repos: deterministic three-pillar report (Security & Supply Chain, Governance, Community) based on OpenSSF Scorecard, with constructive fix suggestions instead of a single misleading score.
md-viewer — dependency-free Markdown viewer for macOS (Finder Quick Action) and web, split view of rendered document and raw text.
Obsidian Vault Autopilot — AI-supported vault automation for Obsidian × Claude Code: sorts the inbox, renames notes, enriches frontmatter.
Phonesis Voice Bank — voice archive for families, hospices, and cultural archives (guided recordings, inheritable archive, optional voice cloning); currently in the GDPR compliance phase (Art. 9, biometric data).
Multi-Agent Development Process — 12+ specialized agents (architecture, implementation, security, refactoring, marketing) with structured handoff protocol, parallel execution, and automated quality assurance — powers the entire product development.
Freelance consulting: Technical Product Ownership for production, logistics, and compliance/AML systems; steering international rollouts including test, cutover, and change management.

Stack: NestJS, TypeScript, PostgreSQL, Redis/BullMQ, Next.js, Claude Code (Opus), Docker, GitHub Actions, Vercel

Ivan G.

Technical Lead

Last position:

Technical Lead at Porsche Digital GmbH

Contributed to the design of the new financial services integration layer and moderated the architectural discussions
Oversaw the security concept and approval of the application
Prepared infrastructure setup and best practices for the Kotlin backend

Deepak N.

Consultant

Asperg

Last position:

Consultant at Advantest Europe Gmbh

Develop hardware drivers and middleware using C++11, Java and Python
Design of various RF features such as deembedding based on stakeholder requests
Work with multiple teams to design drivers for multiple RF products
Perform HW control to deliver RF signals and measure modulated response
Develop RF drivers for generation of low noise signals to test WiFi7 products
Use digital modulation techniques such as QAM for low level driver development
Develop low level USB drivers for device enumeration
Develop drivers for HW relay control of control boards for device testing
Perform JTAG operations on devices under test
Use network-based protocols (SFTP, UFTP, FTP, SSH) for control board communication
Manage HW devices such as BADC and EEPROM for control board maintenance
Utilize C++11/14/17 features, template metaprogramming and STL
Employ multithreading for testing and control of multiple HW devices
Develop tools for deployment of customer OS on control boards
Perform component and integration tests using CxxTest
Follow Scaled Agile Framework for software development
Create detailed design documents using PlantUML

Wael M.

Test Manager

Waiblingen

Last position:

Test Manager at Schwarz IT

Design, planning, and test case analysis
Integration testing
Coordination of UAT in the lab and on site
Creation of HW and SW test catalogs
Communication of test results from REST services with the SAP team
Support for branches in the EU until rollout
Coordination of defect management and SW updates with the involved vendors
Checking the configuration of the charging stations in the backend software for different countries
Continuous reporting of the quality status to project management
Documentation of the user manual in English and German
Tools: Confluence, be.Energised, OCPP Postman, OPI, CCV (payone.elavon), Excel, it4you

Eduard E.

E-Commerce | Shopify Plus Expert

Last position:

Senior Shopify & Shopify Plus Consultant | Project Management, E-Commerce Management & Development at DIGIDY

With DIGIDY, I support companies and agencies with the planning, development and ongoing improvement of Shopify and Shopify Plus stores. As a freelance Senior Shopify Consultant, I combine strategic consulting, technical implementation and operational E-Commerce Management – for D2C brands, B2B companies and internationally oriented online retailers.

I support existing teams as a Shopify specialist, take over the management of projects and sub-projects, or support companies as an external E-Commerce Manager. I translate business requirements into specific technical solutions and coordinate implementation with internal teams, agencies and other service providers.

My areas of focus:

Consulting & Project Management Shopify consulting, requirements analysis, technical planning, feasibility checks and selection of suitable apps and integrations. Project planning, prioritization, coordination and quality assurance through go-live and beyond.
E-Commerce Management & Ongoing Support Operational and strategic development of existing stores: identifying optimization opportunities, planning measures, improving store processes and coordinating implementation with marketing, development and logistics.
Shopify Development & Theme Editing Custom programming with Liquid, JavaScript, HTML and CSS. Theme development, theme customization and implementation of UX/UI designs, as well as development of custom sections, blocks, templates and store features.
Conversion Rate Optimization (CRO) Store audits and optimization of the customer journey – from navigation, search and filters through product pages and the buy box to the cart and checkout. Focus on mobile user guidance, clear purchase decisions and fewer abandoned purchases.
Shopify Plus & B2B E-Commerce Planning and implementation of B2B stores and retailer portals with custom catalogs, price lists, customer approvals and ordering processes. Checkout customizations with Checkout Extensibility, Checkout UI Extensions and Shopify Functions.
Internationalization, Shopify Markets & Multilingual Stores Setup and optimization of international store structures with country-specific markets, languages, currencies, prices and product ranges. Implementation of translation processes and localized content, as well as coordination of domains and URL structures.
Complex Shipping Requirements & Shipping Planning and configuration of shipping profiles, shipping zones and shipping rates. Implementation of product-, customer-, country- and postal-code-dependent shipping rules, as well as coordination of multiple warehouse locations and fulfillment processes via Shopify, apps and integrations.
Tax Settings & B2B Tax Logic Technical configuration of tax settings, net/gross prices, tax exemptions and VAT ID processes according to the requirements of the company and its tax advisors – coordinated for markets, customer groups and shipping locations.
Store Setup, Relaunch & Migration Support for Shopify projects from planning through data migration and system integration to launch. Support when switching from existing store systems to Shopify or Shopify Plus.
Integrations & Automation Integration of ERP, inventory management and other third-party systems via APIs and webhooks. Automation of recurring processes with Shopify Flow and custom integrations.
AI-Assisted Development, Vibe Coding & MCP Use of Cursor, Codex and AI-assisted development tools for prototypes, custom features and automations. Use of the Model Context Protocol (MCP) to integrate documentation and tools into development processes – with technical review and a focus on maintainable code.

Collaboration as needed: project-based support, management of projects and sub-projects, long-term agency cooperation or ongoing support as an external E-Commerce Manager and Shopify Consultant.

Stuttgart · Remote worldwide · German and English

Robin S.

Senior Cloud & Backend Engineer

Last position:

Senior Cloud & Backend Engineer at Media-Saturn-Holding GmbH

Implementing applications with Kotlin and Ktor as microservices
Using MongoDB in the MongoDB Atlas cloud
Asynchronous communication of services via Google Pub/Sub
Using Kotest and MockK for unit tests
Developing an administration frontend with TypeScript, React and Express.js
Provisioning environments in GCP using Terraform
Implementing CI/CD processes with GitHub Actions
Operating scalable production and test environments in GCP with Kubernetes, Helm and Flux CD
Monitoring environments with Prometheus and Grafana
Providing BI data in the Google BigQuery data warehouse

Thomas A.

Interim Assignment

Wernau (Neckar)

Last position:

Interim Management at Vincorion Power Systems GmbH

Process and project management to optimize products and development processes for energy systems
Technical risk management
Requirements engineering and system architecture
System FMEA of power generator units and energy storage modules aiming for generic structures
Claims management according to Section 313 of the German Civil Code
Regulatory environment: military and NATO standards, AQAP, VG norms

Benjamin S.