Sentry Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Sentry
Martin R.
Last position:
Principal Fullstack Engineer / Tech Lead Fullstack Applications at Procure Ai Ltd
Procure Ai builds a procurement platform with tools to optimise purchasing and supplier management, delivering real-time analytics, cost-saving insights, and automated workflows. A common data model integrates and enriches data from multiple ERP and e-procurement systems including Ivalua, SAP, Coupa, WPS, and Jaggaer.
06/2025 – TODAY:
- Architecting and building a new AI-native procurement platform with document intelligence, an agent orchestration layer using Mastra and LLM-based workflow automation across supplier, intake and category management use-cases
- Shipped agentic engineering workflows across the development team, enabling LLM-assisted code generation and review automation, measurably reducing cycle time on repetitive development tasks
- Migrating the Design System from Material UI to shadcn/ui with Tailwind, improving consistency and reducing frontend build overhead
- Staying hands-on across frontend, backend and AI features while the engineering team grew from 10 to 20+ engineers: hiring, onboarding, 1:1s and mentoring
06/2020 – 06/2025:
- Joining as the first engineer after the two founders; shaping platform architecture and product vision from scratch in close collaboration with the CTO, growing the platform to serve 10 enterprise customers
- Leading fullstack feature development on the core procurement platform, with focus on Analytics, Search, and Autonomous Negotiations use-cases: defining MVP scope, aligning technical decisions to customer outcomes, and cutting work that wasn't delivering value
- Challenged a field-based configuration request for Autonomous Negotiations and instead built a node-based rule builder matching how category managers think in conditions and branches; later reused across other workflow and decision configuration use-cases
- Designing and implementing multi-tenant authentication and fine-grained authorisation based on organisational units
- Architecting and building a multi-tenant Admin Application for managing customer installations across environments, covering configuration, feature flags, and i18n
- Creating and maintaining a custom Design System built on Material UI, used across the full product
- Setting up and maintaining CI/CD pipeline and full QA suite (linting, unit, integration, and e2e testing)
- Architecting and implementing a multi-environment release process using Helm and Helmfile; owning infrastructure as code across AWS and Azure
- Researching and piloting new tools and frameworks; making build-vs-buy decisions to balance velocity, cost, and long-term maintainability
- Grew the engineering team from 4 to 10+ engineers, mentoring engineers and building a culture of ownership, code review and iterative delivery
Technologies: TypeScript, JavaScript, React, Node.js, Fastify, GraphQL, GraphQL Codegen, GraphQL Mesh, GraphQL Yoga, Hasura, Apollo Client, REST, CubeJS, PostgreSQL, Prisma, Elasticsearch, Meilisearch, Typesense, Kafka, Avro, Karapace, Kubernetes, Docker, Terraform, OpenTofu, Helm, Helmfile, GitLab CI, Keycloak, Better-Auth, OpenFGA, Nx, Vite, Vitest, Playwright, Testing Library, Storybook, Chromatic, Material UI, shadcn/ui, Tailwind, React Flow, recharts, i18next, Backstage, Grafana, Sentry, Zod, Claude Code, Codex, Mastra, Vercel AI SDK, Vercel AI Elements, AWS, Azure
Daniel W.
Last position:
Frontend Lead & Product Owner
Viktor S.
Last position:
AI Engineer (Freelance) at Empion
Enterprise AI content categorization and AI-powered web research.
- Built multi-LLM evaluation framework with annotated data
- Iterated LLM error rates based on annotated datasets
- Implemented AI-powered web research pipeline Stack: LLM, evals, OpenRouter, Python, Node.js, TypeScript, React
Patrick D.
Last position:
Fullstack Developer
- SPA for automated communication of medical findings with role-based access (Sanctum)
- Server-side LLM integration (OpenRouter) with structured processing
- Automated sending via SMS/voice call (Twilio, ElevenLabs) with queue + status retry
- Full test coverage with 80+ documented test cases
Technologies: PHP, Laravel, LLM API (OpenRouter), Twilio, ElevenLabs, Laravel Sanctum, PHPUnit, Playwright, Docker, REST
Sanju R.
Last position:
Software Developer at Senior Connect GmbH
- Created complex backend systems (Fastapi Python, GCP cloud functions, APIs, integration tests) using Typescript.
- Worked with firebase and firestore databases, implementing transactional operations, scheduling jobs, and migrations.
- Implemented GCP dashboards for thorough monitoring and custom alerts in case of anomaly traffic.
- Implemented Sentry for better debugging, error tracking and overall monitoring of the Next.js frontend.
- Implemented story tests for UI related testing.
- Implemented Typesense in Python Fastapi backend, for improved text based searching along with typo handlings.
Tobias H.
Last position:
Solo Mobile Developer at The Event Verse
- Developed a new iOS access-control scanning app for security/gate staff to validate RFID wristbands/badges in real time
- Implemented an online/offline hybrid architecture: scans are first checked against the API, with a fallback to local SQLite data in case of network issues, including complete access policy evaluation (zone, direction, scan limits)
- Developed a native iOS RFID bridge: connected the proprietary RFID SDK (QuantumSDK) via a custom Expo Config Plugin + Native Module; integrated LineaPro Bluetooth scanner hardware
- Implemented real-time updates via WebSocket (Pusher protocol), including private-channel authentication and reconnect with exponential backoff for device-/gate-/event-based configuration changes
- Designed a 3-level persistence setup (Keychain/MMKV/SQLite) for secure credentials, high-performance state and offline-capable scan/credential data
- Implemented incremental credential sync (Cursor + updated_after) as well as batch upload of scan logs after reconnect to ensure consistent data in field operations
Stefan R.
Last position:
Business Analyst at Galeria
Independently managed the POS tender process for food service operations in department stores.
Structured requirements gathering, both functional and technical.
Created a management-ready specification as a basis for decision-making by management and IT.
Market overview of relevant POS providers.
Close coordination with Galeria's IT and business departments.
Lasse B.
Last position:
Infrastructure Engineer at YC Infra AI Startup
Built and operated the entire infrastructure and observability platform for an AI agent evaluation platform on AWS/Kubernetes. Led the evolution of an AI-first cloud-native platform by building end-to-end observability, automating infrastructure and CI/CD, improving reliability and scalability, optimizing performance through data-driven engineering, and operating in an AI-native development workflow centered on rapid iteration, code review, and automation. Tech stack included Terraform, AWS, Kubernetes, Grafana, Github Actions, Python, and Cursor.
Stefan D.
Last position:
Frontend Developer – Sports Event and City Portal Projects at München Betriebs GmbH
- Developed an accessible, responsive website based on Figma designs for a major sports event in compliance with WCAG, BITV and EN 301 549
- Planned and set up the tool stack with Vite, Playwright, Docker and GitLab CI
- Worked on two existing projects (Vue.js & Nuxt), focusing on bug fixing, accessibility audits and developing new features
- Collaborated with Design and QA to consistently implement accessible UI patterns
- Advised on improving existing frontend architectures in terms of accessibility, performance and maintainability
Matthias Z.
Last position:
Senior Flutter Developer at Materna
- Developed a Flutter app for eID ID card logins
- Focus: Flutter, iOS, eID, AusweisAppSDK, Mason, Keycloak, Agentic Coding, Arc42, Jenkins
Anton L.
Last position:
Senior Solution Architect
Internal systems with regulatory and security requirements could not be used directly by AI tools for incident triage, troubleshooting, and documentation search. The goal was to securely integrate these systems through MCP while preserving existing acce...
Serge K.
Last position:
Data Scientist & MLOps (Machine Learning Operations) at REWE Digital GmbH
- It is like a startup within REWE, where we have to build a new forecasting system on Google Cloud Platform from the scratch. Although, officially my role is called MLOps, my actual tasks also include development of data processing pipelines (data engineering) and data scientists tasks such as feature engineering and model trainings.
- GCP: Terraform (tofu), Vertex AI (Kubeflow), Cloud Run, IAM, Google Cloud Storage, BigQuery, Artifact Registry
- Data engineering: Snowflake as the main data warehouse, Terraform, DBT for data model implementations
- CI/CD: GitLab. We have built a CI/CD pipeline that automates deployments of new releases up to production environment
- Development of feature store and data synchronization between environments
- Data science: evaluation of different forecasting models, including CatBoost, Contextual Gamma and Random Forest; implementation of training pipelines using Kubeflow on Vertex AI; scaling and development of an event-driven interface using Kafka as a forecasting service; evaluation of MLFlow for model tracking and model registry
- Implementation of REST API using KeyCloak OAuth2 and OpenID (JWT)
- Monitoring: implementation of dashboards with Grafana, Prometheus, Mimir, Streamlit and Loki to monitor prediction metrics, GCP and Snowflake costs for pipelines, and system metrics
- Development of Copilot Agent Skills
Umut T.
Last position:
App Engineer at Tonies SE
Worked as an App Engineer as part of the IoT Control team in a React Native Stack.
- Implementing new Components based on the Tonies Design System.
- Improving, extending and maintaining Tonies Design System
- Adding new features like Volume and Playback Control of the Tonies
- Fixed connection issues via bluetooth and wifi
- Removing technical debt and polishing for an upcoming big software and hardware release
- Improving accessibility by optimizing screens and components for usage via screen readers.
- Wrote lots of automated tests to ensure app quality is always stellar.
- Weekly app releases in a high volume workload environment
Results & Impact:
- Improved app stability and connection reliability ahead of a major software and hardware release
- Raised overall app quality through a significantly broader automated test suite, catching regressions before they reached users
- Made the app usable with screen readers, improving accessibility for a wider audience
- Sustained a weekly release rhythm in a high-volume production environment without quality regressions
Technologies: react-native, expo, typescript, react-19, react-compiler, react-navigation, zustand, @tanstack/react-query, i18next, figma, app-store, play-store, sentry, bitrise, config-cat, poeditor
Stefan B.
Last position:
Senior Full Stack Developer / Co-Founder / CTO / Head of Development at Netprint Development & Solutions GmbH
Overall technical responsibility for innovative SAP Customer Checkout solutions for leading customers such as Aramark, Consortium Gastronomie, Feinkost Käfer, TSG Hoffenheim, and VfB Stuttgart. End-to-end support from requirements analysis through implementation and support.
Successful design and development of the NDS SmartPOS platform ("Läufer App"):
Development of the software architecture and implementation according to Modern Android Development principles.
Management of a small development team (1 Android expert, 1 working student) with a 50 % share of my own development work.
Integration of various payment SDKs (S-Payment S-POS, VR Payment, CCV), enabling customers to achieve significant cost savings by continuing to use existing contracts.
Successful rollout at several major customers, with demonstrably increased efficiency of sales staff.
Independent development and successful implementation of critical infrastructure components:
Reporting server (SQL, JasperReports): Demonstrable reduction in accounting workload by eliminating the need for daily manual data transfer to the ERP system.
ZVT plugin: Sole responsibility for implementing the serial protocol with Java/Netty over TCP/IP, saving several thousand euros per site and successfully used in production at several Bundesliga stadiums.
Complete independent development of specialized plugins and server applications for customized extensions of SAP Customer Checkout:
Waiter Teams Plugin: Enables waiters to work and settle accounts as a team.
SQL Reporting: Independently delivered from concept through complete documentation.
RFID payment solution for employee cards: Responsible for the complete development cycle.
Integration with reservation services: Designed seamless integration with Luca and other services and implemented it together with a colleague.
Direct on-site technical support for customers, including rapid troubleshooting in real-time environments with high transaction volumes and direct coordination with stakeholders to continuously improve the systems based on practical experience.
Ingo K.
Last position:
Co-Founder & Managing Director at Elterngeld Buddy GmbH
- Responsible for the entire software architecture of the parental allowance portal
- iOS and Android app with React Native and Expo, incl. push and OTA updates
- Store releases via App Store Connect and Google Play Console
- TypeScript monorepo for app, website and backend, web with Next.js and Tailwind
- Own promo, voucher and discount engine with contact and segment logic
- Payments via RevenueCat and in-app purchases, authentication with BetterAuth
- REST APIs based on OpenAPI, PostgreSQL with Prisma and Drizzle
- Self-hosting on Hetzner with Docker, Coolify, Terraform and GitHub Actions
- Tests with Vitest, Playwright and visual regression via Chromatic
- Observability via Grafana Cloud and error tracking with Sentry
- Performance marketing via Meta Ads, measured with custom event tracking
- Grew the product to 20,000 app users with a purchase rate of almost 12 %
- Managing Director since 04.2025, responsible for product and technology
Discover over 15,000 top freelancers
Statistics of experts using Sentry
Aggregated from the professional profiles of matched freelancers.
Experience
15 years
Position duration
1.7 years
Positions per freelancer
10
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Retail, Banking and Finance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
81%
Master's degree or higher
55%
Doctorate
10%
Certifications per freelancer
2
Most common languages
English, German, Russian
Speak two or more languages
100%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Germany using Sentry
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Sentry experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (100%)
- Retail (56%)
- Banking and Finance (44%)
- Healthcare (38%)
- Insurance (33%)
- Media and Entertainment (31%)
- Manufacturing (28%)
- Energy (26%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Sentry does
Sentry is an application monitoring platform for capturing errors, exceptions and performance issues in production. Its SDKs collect context such as stack traces, requests, device data, releases and user actions, helping teams move from a failing event to a clear technical cause. Sentry supports web, mobile, backend and serverless applications.
Core capabilities
Sentry experts set up reliable observability workflows rather than simply installing an SDK. Typical work includes:
- Configuring SDKs for frontend, backend and mobile applications
- Grouping events and tuning issue fingerprints
- Tracking slow transactions, traces and performance regressions
- Connecting releases, commits and deployment data
- Defining alerts for errors, latency and crash-free sessions
Ecosystem and tooling
Sentry integrates with languages and frameworks including JavaScript, TypeScript, Python, Java, PHP, Ruby, Go, .NET, React, Next.js, Django and Laravel. Specialists may also work with Sentry Relay, sentry-cli, source maps, release automation, OpenTelemetry and incident tools such as Slack or Jira. Strong configuration keeps sensitive data controlled and diagnostic context useful.
When companies need expertise
Companies often bring in freelance Sentry expertise during a new product launch, a migration from basic logging, or a period of recurring production incidents. It is also valuable when teams need consistent monitoring across microservices, mobile apps and cloud environments. In Germany, remote collaboration is common, while on-site workshops can help align product, engineering and operations teams.
What strong specialists deliver
The best professionals connect monitoring data with practical response processes. They distinguish actionable issues from noise, preserve meaningful release context and design alerts that support ownership. They understand application architecture, CI/CD, cloud infrastructure, privacy-aware data handling and incident response, so Sentry becomes part of daily delivery instead of a separate dashboard.
How projects are assessed
A useful Sentry engagement starts with the application landscape, current logging, deployment flow and incident history. Experts review event volume, sampling, alert rules, source-map handling and access roles before recommending changes. They should leave behind documented configuration, tested notifications, dashboards or saved searches, and clear guidance for teams maintaining the setup after handover.
Frequently asked questions
Need clarity? These are the questions we hear most often about Sentry.
Sentry is used to detect, investigate and prioritise application errors, crashes and performance problems. It links events to stack traces, releases, user context and transaction data so teams can diagnose production issues faster.
Sentry complements logs and infrastructure monitoring by focusing on application-level failures and user impact. Logs provide broad event detail, while Sentry groups related errors, connects them to code context and highlights regressions across releases.
A strong Sentry specialist usually understands the application framework, source maps, CI/CD pipelines and cloud runtime involved in the project. Experience with OpenTelemetry, structured logging, release management and incident response is also valuable.
A basic SDK setup may suit a professional familiar with the relevant programming language and deployment process. Complex work across microservices, mobile applications, privacy controls and release automation calls for deeper Sentry experience and a clear monitoring strategy.
Sentry work is well suited to remote collaboration because configuration, testing and documentation can be completed in shared repositories and cloud environments. On-site sessions in Germany may still help when teams need workshops on incident ownership, alert design or operational processes.
Ask the professional to explain how they would reduce noisy events, protect sensitive data, connect releases and test alerts. Good Sentry work produces actionable notifications, useful diagnostic context, documented ownership and a setup that the internal team can maintain.
Sentry can work alongside OpenTelemetry in observability setups that combine application monitoring with broader tracing and metrics standards. The right approach depends on the existing instrumentation, data ownership, sampling rules and the level of context needed in incident investigations.
A Sentry engagement often involves more than adding an SDK. Professionals should clarify supported applications, deployment workflows, privacy requirements, alert ownership, source-map handling and the expected handover, then define how success will be evaluated by the team.
The average hourly rate of freelancers in Germany who have used Sentry in their recent projects is 100 €, which corresponds to a daily rate of about 799 € based on an 8-hour working day.
Of the freelancers in Germany who have used Sentry in their recent projects, 81% hold at least a Bachelor's degree, 55% hold at least a Master's degree, and 10% hold a doctorate.
On average, freelancers in Germany who have used Sentry in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Germany who have used Sentry in their recent projects are English (100%), German (95%), and Russian (15%).
The most common industries among freelancers in Germany who have used Sentry in their recent projects are Information Technology (100%), Retail (56%), and Banking and Finance (44%).
The most common business areas among freelancers in Germany who have used Sentry in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (49%).
Main locations of FRATCH Experts, who have recently used Sentry
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin 
Munich Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
