AES Experts in Germany
for secure data protection, matched in minutes with vetted freelancersHire experts who implement AES encryption, design key-management flows and secure APIs, databases and cloud workloads. FRATCH matches you quickly and precisely with vetted, available freelancers who fit your technical needs.
Meet FRATCH Experts in Germany, who have recently used AES
Alois R.
Last position:
Senior Fullstack Developer at brandung GmbH
- Opt-in RAG extension over tenant-owned data sources (SharePoint, Confluence) on existing multi-tenant enterprise AI platform
- Architecture: ADRs, solution evaluations, permission strategy, cost modeling
- End-to-end SharePoint and Confluence connectors: OAuth consent flows, token refresh, metadata sync, search integration
- Permission resolution: ACL indexing at ingestion and query-time verification (document-level security)
- Elasticsearch hybrid search (semantic + keyword) with RRF scoring
- RAG chat with context injection and source citations
- Stack: Elastic Cloud, Elasticsearch, Docker, Northflank, Next.js, React, TypeScript, Prisma, Microsoft Graph API, Atlassian REST API, OAuth 2.0
Stefan A.
Last position:
Sole Architect and Developer at Bauernhof-Eis Stangl GbR
Design and implementation of a compact ERP, CRM, accounting, and production-planning platform for a German food manufacturer. The system replaces Rechnung11, self-built Excel sheets, and manual processes for fewer than 10 internal users.
- Designed and implemented the full platform architecture as sole architect and developer.
- Built modules for customer management, B2B order handling, invoicing, production planning, and accounting support.
- Implemented DATEV export, ZUGFeRD/XRechnung e-invoicing, FinTS bank statement synchronization, and GoBD audit trail concepts.
- Used AI-supported workflows for prototyping, test support, and implementation acceleration while retaining full architecture, review, testing strategy, and technical ownership.
Technology: Java 23, Spring Boot 3, Spring Data JPA, Spring Security, Vue 3, TypeScript, PostgreSQL, Flyway, REST, OpenAPI, JWT, TOTP, RBAC, DATEV, FinTS, ZUGFeRD, XRechnung, GoBD, JUnit, Mockito, Testcontainers, Playwright, Docker, GitLab CI/CD
S.r.k. C.
Last position:
Senior Software Engineer at STEPPS GmbH / Motherson Dr. Schneider
Project: Intelligent Light Communication Software — Audi
- Analysis and clarification of system requirements with the customer and translation into software architecture and design decisions
- Architecture and implementation of CAN FD and SPI communication on NXP S32K312
- Design and development of flash bootloader, flash driver, and boot manager for secure OTA-capable updates
- Configuration of the AUTOSAR BSW architecture (Dcm, Dem, NvM, BswM, Os, Mcu, Port, Com stack, Rtc) for portability and maintainability
- Design of the crypto stack (Csm, CryIf, Crypto) for secure flash and diagnostic data; integration of the NXP HSE core and wrapper layer
- Integration of customer-specific modules (Sfd, Ivd, Npm) into the Vector AUTOSAR stack
- Definition of the memory architecture: Memmap, CMake, and linker script configuration
- Leading board bring-up for the Audi light demo platform; implementation of diagnostic routines and identifiers
Bernhard B.
Last position:
Technical Project Manager – VS-NfD Security Project
- Preparation of a complete IT security concept (ISiKo)
- Implementation of BSI / NATO / national security requirements
- Risk analysis, documentation, audit preparation
- Consulting and management of development teams in Cybersecurity Recovery and Resilience
- Genua firewalls, VPN, VS-NfD migration from Checkpoint and PaloAlto firewalls
- Administration of log sources: firewall traffic, ALG (SIP calls), ATP, DLP
- System administration – servers, AD, clients (according to BSI)
- Stakeholder communication (C-level / government agencies)
Alexander S.
Last position:
AI Consultant for AI Voice Bot System at Rudolf Hörmann GmbH & Co.KG
- Consultant for system architecture, AI agents & integration, coach for data & process logic, Graph-RAG approaches, security and data protection.
- On-premise AI solutions with high compliance and performance requirements.
- Architecture decisions, operational setup, strategic prioritization & deployment.
- Technologies: LiveKit JS SDK, LiveKit Agents, Web Audio API, JS, AudioWorklet, Loki, vLLM, Zscaler, Docker, Neo4j, MySQL, Python.
- Models: GPT-OSS 20B, Whisper large v3 turbo, Qwen3-TTS.
Charles J.
Last position:
Network Architect at RedGlobal GmbH
- Configuration of Dell switches, routers, and access points.
- Troubleshooting and issue resolution.
- Extreme, Cisco and Dell switches and routers environment, Extreme A3 NAC, Extreme CloudIQ.
Jonathan M.
Last position:
On-Site Coordinator at Freelance
- Customer interface and relationship management
- Requirements management and work coordination
- Technical and functional support focusing on automotive Ethernet
Alexander D.
Last position:
Systems Engineer at infoteam AG
- Further development and maintenance of data management software in the nuclear sector
- Processing and resolution of problem reports
- Bug fixing and defect remediation
- Performance optimization of legacy code
- Analysis and remediation of security vulnerabilities
- Specification and conceptual design of new features
- Modernization of legacy codebase to C++17
- Technologies & tools: C++, ClearCase, SQL, HTML, CSS, JavaScript, Git, Linux, Solaris, Shell-Script, VisualStudio
- Frontend – Smart Sensor Dashboard: development of a browser-based dashboard for real-time visualization of smart sensor data
- Technologies & tools: TypeScript, Angular, HTML, CSS, JavaScript, MQTT, VisualStudio
- Implementation of embedded safety software for a magnetic levitation elevator system
- Requirements engineering
- Documentation and implementation of safety software for the magnetic levitation elevator control system and the central management system
- Creation and execution of unit tests for all implemented modules
- Technologies & tools: C/C++, Jira, Bitbucket, Confluence, VectorCAST, MISRA-C, Lint, Doxygen, Git
Sebastian S.
Last position:
AI Engineer at Babel Group
- Developed RAG-based AI solutions integrated with enterprise data infrastructure for high-accuracy responses.
- Optimized LLM performance, reducing latency and cost with fine-tuned AI models.
- Built NLP pipelines for summarization, entity extraction, and sentiment analysis, enhancing automation workflows.
Matthias S.
Last position:
AI-assisted Web Development & SaaS Founder at Self-employed
- Full focus on AI-augmented web development
- Building and running three proprietary AI-native SaaS products (BrainButler, PageUpgrade, termin365)
- Developing a self-hosted business stack for digital sovereignty
- Daily workflow with Claude as engineering partner and Anthropic/OpenAI APIs for product features
- Using RAG systems with custom vector databases and prompt engineering for complex multi-step pipelines
- Tech stack: Python/FastAPI (backend), React/TypeScript (frontend), WordPress plugin architectures (PHP), multi-tenant systems with per-user encryption
Jürgen B.
Last position:
Software Developer at Inform AG
- Coaching junior developers
- Further development and customer-specific extensions of a standard software product (microservices (DDD) and partly monolith)
- Interface extensions
- Web services
- Test automation
- Design
- Technologies used: Java8, Java17, TypeScript, Python, PostgreSQL, Spring (Integration, Data, Boot), JPA, AWS (Cloud, Lambda, EC2, SQS/SNS), Microservices, Fitnesse/Cucumber, Gitlab
Oliver O.
Last position:
Embedded Software Architect at Automotive supplier
Stellar SR6 G7 line, 32-bit Arm® Cortex®-R52+ MCU.
- MISRA-C, C99, Greenhills ARM compiler
- Dassault AUTOSAR Builder
- EB Tresos
- Sparx Enterprise Architect 16.1
- VS Code
- Python xml, lxml, NumPy and Pandas
ISO 26262, ISO 21434, hypervisor, key management, HSM. Tooling & automation. LieberLieber LemonTree + Sparx EA. Jira, Confluence, SharePoint. Git/Github. DevOps through Jenkins & Conan.
Franck F.
Last position:
Multiproject Manager / Senior Business Analyst at MANN&HUMMEL
- Overall management of several project streams: mechanical development, IoT integration, software development, plant design, validation
- Management of an international project team made up of mechanical engineers, electronics engineers, software developers, designers, and external suppliers
- Coordination of global stakeholders from Germany, France, India, China, and the USA
- Planning, controlling, and reporting across all project levels: schedule, budget, resources, and deliverables (PMI-oriented)
- Moderation of steering committees, technical workshops, and milestone decisions
- Responsibility for requirements management and prioritization in the overall context (IoT, cloud, mechanical integration, safety standards)
- Quality assurance and test strategy: validation of filtration results, system behavior, plant integration
- Supplier management and procurement involvement for components, logistics, and assembly
- Risk management and escalation handling for technical, regulatory, or cross-country deviations
- Go-to-market preparation: coordination of product documentation, CE certification, training, and handover to service & sales
- Methods: multiproject management according to PMBOK, hybrid model SCRUM + classic milestone planning, stage-gate model
- Tools: MS Project, Excel, Jira, Confluence, Miro, MS Teams, SharePoint, CAD/CAE systems, test and validation software
- Technologies: OPC UA, MQTT, Siemens S7, IO-Link, Modbus, REST APIs, SCADA, monitoring dashboards, sensors & control technology, CE-compliant housing design, ISO standards
Yoav N.
Last position:
Freelance Software Architect at Freelance Consultant
- Various small consultations, e.g. concepts and arcitectures.
- Updating my Matlab, Linux, IPv6, Cyber-Security, C++ (up to 23) and Python skills.
Philipp S.
Last position:
MS365 Consultant/Solution Architect at Self-employed
- Setup and configuration of an M365 tenant on a hybrid basis
- SSO integration of the existing app infrastructure like Metamost, Huhu, etc.
- License consulting, Entra ID initial configuration, MFA, Conditional Access, Privileged Identity Management
- Intune: initial configuration, Windows 11 Autopilot, iPhone AES
- Takeover of the tenant and preparation of a security audit
- Rollout of iPhones with AES (formerly DEP) as COPE (Corporate Owned, Business Enabled)
- Connecting external customers with enhanced security through Conditional Access
- Consulting on cloud-first strategy and migration to a cloud-only business
- Connecting various apps via SSO/SCIM (e.g. Atlassian, Personio, Adobe)
- On-premises AD: security audit and project management for replacing the local AD (migration of file servers, Navision2016, user clients joined to Entra ID)
- Copilot rollout with connection to external data sources and configuration via Intune
- Support for TISAX and ISO27001 preparation
- Setup and hardening of Entra ID, switching MFA to phishing resistant via Conditional Access
- Intune management for Windows and Apple clients, web enrollment switch to AES, introduction of Autopilot, app management, integration of Microsoft Defender
- Building a device baseline for Windows (COBO) and iOS/Android (BYOD)
- Teams/SharePoint Online: access concepts and integration into Teams
- Maintenance and backup of Entra ID and Intune tenants (drift management)
- M365 backup with Veeam
- Extending Conditional Access policies, introduction of Privileged Identity Management with hardware tokens and an on-premises admin tier concept
- Revision of existing GPOs regarding structure, security, and compliance
- Security audit and hardening of on-premises Active Directory and cloud tenant, SAML VPN, PIM introduction
- Support for the HR department in introducing a booking portal and general system engineering administration & security
- Introduction of Conditional Access and passwordless MFA, platform SSO, Defender for macOS/iOS, macOS compliance with Intune, Code2 signature configuration
Discover over 15,000 top freelancers
Statistics of experts using AES
Aggregated from the professional profiles of matched freelancers.
Experience
24 years
Position duration
2.1 years
Positions per freelancer
16
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Manufacturing
Certification focus areas
Information Technology, Project Management, Human Resources
Bachelor's degree or higher
73%
Master's degree or higher
36%
Doctorate
9%
Certifications per freelancer
3
Most common languages
German, English, Spanish
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 AES
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.
AES 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 (88%)
- Automotive (65%)
- Manufacturing (65%)
- Telecommunication (59%)
- Healthcare (53%)
- Banking and Finance (47%)
- Aerospace and Defense (35%)
- Education (35%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
AES in Practice
AES, or Advanced Encryption Standard, is a symmetric block cipher used to protect data at rest and in transit. The same secret key encrypts and decrypts the data, while modern implementations commonly use AES-128, AES-192 or AES-256. AES replaced older standards such as DES and remains a core building block for secure software, devices and networks.
Where It Runs
AES protects information across applications and infrastructure rather than serving as a complete security system on its own. Companies use it for:
- Encrypting database fields, backups and file storage
- Securing VPN, Wi-Fi and TLS-related connections
- Protecting cloud objects, device data and application secrets
- Building encrypted messaging and payment workflows
Modes and Libraries
Strong AES work depends on choosing a suitable mode and using a trusted cryptographic library. GCM is widely used when authenticated encryption is required; CTR and CBC need careful handling and must not be paired with unsafe or reused initialization values. Specialists work with libraries such as OpenSSL, Bouncy Castle, libsodium integrations and native platform cryptography APIs.
Key Management
Encryption is only as reliable as the way keys are created, stored, rotated and revoked. Professionals connect AES implementations with hardware security modules, cloud key-management services, secret managers and access-control policies. They also define nonce handling, backup procedures, separation of duties and recovery processes without exposing plaintext or key material in logs.
When to Bring Expertise
Freelance AES specialists are useful when a company is replacing outdated encryption, reviewing a cryptographic design or preparing a system for a security audit. They can also support migrations between cloud providers, legacy application upgrades and incident response. In Germany, remote collaboration is common, while regulated environments may require on-site workshops and clear German or English documentation.
What Good Looks Like
A strong professional explains the threat model before selecting an algorithm or mode. They distinguish confidentiality from integrity, avoid custom cryptography and test failure paths as carefully as successful decryption. Look for secure code review, reproducible tests, documented key lifecycles and practical knowledge of TLS, identity, access control and data-protection requirements. They should communicate trade-offs clearly to both software and security teams.
Frequently asked questions
Key details about AES, drawn from the questions we get asked most.
AES, or Advanced Encryption Standard, encrypts data so unauthorized parties cannot read it without the key. Companies use it for files, databases, backups, device storage, VPN traffic and application data. AES provides confidentiality, but a secure design may also need authentication, access controls and careful key management.
AES is a symmetric cipher and is generally suited to encrypting larger amounts of data efficiently. RSA uses asymmetric keys and is more commonly used for signatures or exchanging secrets, while ChaCha20 is another modern symmetric option that can perform well where hardware AES support is unavailable. The right choice depends on the protocol, device, library support and threat model.
A capable AES specialist should understand cryptographic libraries, TLS, identity and access management, secure software design and threat modelling. Key-management services, hardware security modules, cloud security and secure code review are also valuable adjacent skills. Knowledge of compliance and audit evidence helps when encryption supports regulated systems.
AES expertise is especially important when a system stores sensitive data, handles keys directly or replaces legacy encryption. A specialist can review the design early, prevent unsafe modes and reduce costly rework. Smaller projects may use established platform services, but they still benefit from an expert review of configuration and key handling.
AES implementation and review can usually be completed remotely with controlled repository access, secure meetings and documented decisions. On-site work may help when teams need workshops around hardware security modules, private infrastructure or incident response. German or English communication should match the project’s documentation and stakeholder needs.
A strong AES implementation uses a maintained cryptographic library, an appropriate authenticated mode and a documented key lifecycle. Ask how the specialist prevents nonce reuse, protects keys from logs and backups, handles rotation, and tests failed authentication. Clear threat modelling and code-review evidence are stronger signals than algorithm names alone.
Common AES mistakes include using ECB, reusing nonces, selecting CBC without authentication, hard-coding keys and inventing custom cryptographic code. Weak randomness, overly broad key access and poor recovery procedures can undermine otherwise sound encryption. A review should examine the full data flow, not only the call that encrypts bytes.
AES supports AES-128, AES-192 and AES-256, and the choice should follow the threat model, policy requirements and library or service constraints. A larger key is not a substitute for authenticated encryption or good key storage. An experienced specialist documents the decision and checks interoperability, performance needs and long-term maintenance.
The average hourly rate of freelancers in Germany who have used AES in their recent projects is 89 €, which corresponds to a daily rate of about 713 € based on an 8-hour working day.
Of the freelancers in Germany who have used AES in their recent projects, 73% hold at least a Bachelor's degree, 36% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used AES in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Germany who have used AES in their recent projects are German (100%), English (100%), and Spanish (35%).
The most common industries among freelancers in Germany who have used AES in their recent projects are Information Technology (88%), Automotive (65%), and Manufacturing (65%).
The most common business areas among freelancers in Germany who have used AES in their recent projects are Information Technology (100%), Product Development (88%), and Project Management (71%).
Main locations of FRATCH Experts, who have recently used AES
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 Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
