SSL/TLS Experts in Cologne
matched in minutes from over 15,000 CVsHire experts who secure web applications, APIs and internal services with certificate management, modern cipher suites and automated renewal. FRATCH quickly connects you with vetted, available freelancers whose SSL/TLS skills fit your infrastructure and delivery needs.
Meet FRATCH Experts in Cologne, who have recently used SSL/TLS
Jens R.
Last position:
Platform Architect & Senior Developer at Direct client, industrial measurement technology, medium-sized company
- Technical leadership across hardware, firmware, and software teams; scope: hardware/firmware team (4 people) and leadership group (5 people)
- Consolidated and documented a product family that had grown over more than 15 years and aligned it with CRA compliance — from the bare-metal I/O module to the cloud interface.
- Provided the most important customer product with the essential requirements and architecture documentation within two months — for a firmware landscape that had grown over more than 15 years. It now supports the customer’s modernization strategy.
- Established a monthly reporting line to the supervisory board and executive board within three months: nine meetings since 12/2025. The report itself is versioned and built from the CI pipeline; it is based on automatically collected activity and release data instead of assessments.
- Built a container-based CI/CD infrastructure from scratch: cross-compilation, host tests, and documentation builds in one continuous pipeline.
- Introduced declarative QA gates for DevOps and development artifacts — from the start using lefthook instead of pre-commit, executed in a dedicated container image.
Technologies used: arc42, req42, tpo42, docToolchain, PlantUML, ArchiMate, C4 model, ADR, C, C++ (GTest), CMake, Bare Metal (ARM Cortex-M3/M7), OCI containers, Jenkins, lefthook, Prometheus, Grafana, SBOM, CRA, OPC, SCADA, PLC integration, IPv6 migration, Zero Trust, Sociocracy 3.0, Cynefin
Predrag P.
Last position:
Test Developer | Test Automation Engineer at CreditReform
Technologies: Java 25, Selenium, Insomnia, SSO, Gitlab, Jenkins, Docker, Kubernetes, Jira, IntelliJ, Nexus, Oracle, MariaDB, SpringBoot, Grafana, Concept Board, Vue.js, OpenApi, Kotlin. Implementation, maintenance, and enhancement of automated end-to-end regression tests for UI and API interfaces. Appropriate and targeted test automation involving multiple software products, including Java-based Windows applications. Automation of business processes with Selenium, reset jobs, and DB import jobs, as well as creation of test concepts, test case descriptions, and structured defect reporting.
Pierre G.
Last position:
Ansible Automation, Windows Third Level Support at DB InfraGO AG
- PRISMA project
- Ansible automation
- Windows third-level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019
Stanislaus S.
Last position:
Security Consultant at Rohde & Schwarz AG at Star Labs GmbH
- Worked on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography
- Developed and audited Linux drivers
- Collaborated using GitLab, Gerrit, Confluence and Jira
- Technologies: C, C++, Secure Boot
Stanislav S.
Last position:
Interim CTO / IT Consultant (Cloud & App Security · AI & Web3) at Deutsche Bank Group; Startups
- Spearheaded strategic and operational oversight of IT infrastructures to accelerate innovation and ensure audit-proof delivery.
- Acted as key liaison between management, business departments, and engineering, actively engaging in coding, cloud architecture, and CI/CD to resolve critical path challenges.
- Engineered and implemented an AI Governance Program to manage risks and ensure compliance with the EU AI Act, reducing AI use-case approval times from 8 to 3 weeks.
- Delivered and deployed secure AI systems into production (RAG-based knowledge platforms), resulting in a 35% decrease in standard support ticket volume.
- Established robust security standards and governance frameworks for APIs (OAuth2/OIDC, mTLS) and cloud platforms (AWS/GCP) to guarantee compliance and system integrity.
- Hardened cloud infrastructure by implementing Zero Trust principles and a comprehensive observability stack (logging/alerting), achieving 99.9% availability in a 24/7 on-call environment.
Alexander S.
Last position:
TYPO3 Senior Fullstack Developer, Backend & Frontend at Vergleich.de Gesellschaft für Verbraucherinformation mbH via HALIAN GmbH
- Typoscript
- Extbase
- Fluid
- Typescript
- requireJS
- WebVital
Discover over 15,000 top freelancers
Statistics of experts using SSL/TLS
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 20 years)
Position duration
2.7 years (Germany: 3.1 years)
Positions per freelancer
19 (Germany: 14)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Banking and Finance, Information Technology, Healthcare
Certification focus areas
Information Technology, Human Resources, Project Management
Bachelor's degree or higher
75% (Germany: 81%)
Master's degree or higher
50% (Germany: 47%)
Certifications per freelancer
3
Most common languages
German, English, Russian
Speak two or more languages
100% (Germany: 97%)
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Cologne 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 Cologne using SSL/TLS
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 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
SSL/TLS experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Banking and Finance (83%)
- Information Technology (83%)
- Healthcare (67%)
- Manufacturing (50%)
- Telecommunication (50%)
- Aerospace and Defense (33%)
- Energy (33%)
- Insurance (33%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Secure connections
SSL/TLS encrypts data between clients, servers and services. It protects credentials, payment details, API traffic and private business data while helping systems verify who they are communicating with. Although people still say SSL, modern implementations use Transport Layer Security, or TLS.
Where it runs
SSL/TLS appears wherever a system accepts network connections or exchanges sensitive information. Common targets include public websites, mobile backends, cloud services, email gateways, service meshes and corporate VPN access. In Cologne, companies across digital services, logistics, media and industrial operations may rely on it for customer and internal traffic.
- HTTPS for websites and REST or GraphQL APIs
- Mutual TLS between services and devices
- Encrypted database, messaging and email connections
- Secure ingress, load balancer and reverse-proxy traffic
Ecosystem and tooling
Strong specialists work with certificate authorities, public key infrastructure and certificate stores. They configure Nginx, Apache HTTP Server, HAProxy, Envoy, Kubernetes ingress controllers and cloud load balancers. Useful tooling includes OpenSSL, key and certificate utilities, browser diagnostics, automated ACME issuance and secrets management systems.
When experts help
Companies bring in freelance SSL/TLS expertise when a migration, audit or incident exposes gaps in transport security. They may need to replace weak protocols, rotate certificates without downtime, introduce mutual authentication or standardize settings across hybrid infrastructure.
- Diagnose handshake failures and certificate-chain errors
- Automate issuance, renewal, revocation and deployment
- Move from legacy SSL settings to current TLS policies
- Coordinate certificates across cloud and on-premises systems
What quality looks like
A capable professional connects cryptographic settings to the application, network and operating model around them. They distinguish encryption from identity verification, protect private keys, document trust relationships and test expiry, renewal and failure paths. They also explain trade-offs clearly to security, infrastructure and product teams.
Working with a specialist
SSL/TLS work can usually be delivered remotely when access, logs and ownership are well defined. On-site collaboration in Cologne can help when certificates span data centers, devices or regulated operational environments. Share the traffic flows, platforms, certificate authority setup and deployment process so the specialist can assess risk and deliver changes safely.
Frequently asked questions
What clients ask us most about SSL/TLS — answered in short.
SSL/TLS encrypts data in transit and authenticates servers through digital certificates. Companies use it for HTTPS websites, APIs, email, databases, service-to-service traffic and connected devices.
SSL/TLS is the common name for transport encryption, but SSL refers to older protocols that should no longer be used. TLS is the current protocol family, and projects should define secure versions, cipher suites and certificate policies explicitly.
SSL/TLS protects a specific connection between communicating endpoints. A VPN secures traffic across a broader network path, while application-level encryption protects selected data even after transport security ends; they solve different problems and can be combined.
A strong SSL/TLS specialist should understand DNS, HTTP, TCP, reverse proxies, firewalls, cloud networking and secrets management. Experience with PKI, certificate authorities, Kubernetes, CI/CD and observability is also valuable.
The right SSL/TLS experience depends on the scope, not a fixed number of years. A certificate replacement may need focused platform knowledge, while a PKI redesign or mutual TLS rollout requires broad security, networking and automation experience.
SSL/TLS projects are often suitable for remote collaboration when access controls, logs and system ownership are clear. On-site work in Cologne may help when the scope includes physical infrastructure, operational technology or coordinated changes across local teams.
Ask how the SSL/TLS professional handles private keys, certificate chains, renewal failures, revocation and rollback. A quality engagement produces tested configurations, clear documentation, monitoring for expiry and a plan for recovering from failed handshakes.
An SSL/TLS freelancer may deliver a current-state assessment, certificate inventory, target policy, automated renewal workflow and deployment changes. They can also document trust relationships, test client compatibility and train the team responsible for ongoing operations.
The average hourly rate of freelancers in Cologne, Germany who have used SSL/TLS in their recent projects is 109 €, which corresponds to a daily rate of about 870 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used SSL/TLS in their recent projects, 75% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used SSL/TLS in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Cologne, Germany who have used SSL/TLS in their recent projects are German (100%), English (100%), and Russian (50%).
The most common industries among freelancers in Cologne, Germany who have used SSL/TLS in their recent projects are Banking and Finance (83%), Information Technology (83%), and Healthcare (67%).
The most common business areas among freelancers in Cologne, Germany who have used SSL/TLS in their recent projects are Information Technology (100%), Product Development (83%), and Quality Assurance (83%).
Main locations of FRATCH Experts, who have recently used SSL/TLS
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 
Frankfurt 
Dusseldorf 
Essen Request a free demo
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Philipp Thomaschewski
FRATCH CEO
