Dennis Zelada-Co-founder & Chief Technology Officer
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Experience
Co-founder & Chief Technology Officer
Delta Technologies
- Spearheaded the company's technical vision, ensuring product-market fit and customer-centric product development
- Cultivated strong customer relationships to gather feedback and refine product offerings
- Led technical team of 4 FTEs in developing and integrating robust APIs with e-commerce and accounting platforms
- Championed agile methodologies, adapting swiftly to market and customer requirements
- Raised funding from renowned angels and early stage ventures in Germany
Chief Technology Officer / Chief Product Officer
Wishpond Technologies
- Directed AI-driven solution development, enhancing business capabilities with predictive analytics and automation
- Managed a multinational engineering team of 50+ across different time zones, fostering a collaborative and inclusive culture
- Instrumental in company acquisitions and integrating new technologies and teams
- Created multiple internal schools for tech leads and DevOps to increase the learning culture
- Contributed to the IPO
- Increased team satisfaction from 2.5 to 4.5 over 5 and maintained consistency
Chief Technology Officer
ClosedWon
- Led a global team of 10+ and an external agency, focusing on technology assessment, code redevelopment, and investor engagement
- Contributed to the successful sale of the company by enhancing product capabilities and market positioning
Chief Technology Officer
WiseBuffet / Creatrix
- Grew the engineering team from 3 to 150+ global team members, overseeing diverse product and service expansions
- Appointed CTO at Creatrix with responsibilities including managing 35 business units
Chief Technology Officer & Co-Founder
Browsy
- Developed a proprietary algorithm using machine learning and computer vision in collaboration with Google's AI team
- Led a global team of 10+, culminating in the successful sale of data to a third-party provider
Team Lead & Solutions Architect
Xerox
- Managed a global team of 30+, responsible for designing and architecting infrastructure solutions for 30+ clients
- Administered a server network of 5000+ across various platforms, enhancing system efficiency and reliability
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Operations, Research and Development, and Strategy.
Summary
Seasoned technology leader with over 20 years in the industry, combining software development expertise and strategic vision to drive innovation and business growth. Known for entrepreneurial spirit, creative problem-solving, and effective team leadership in diverse, dynamic environments. Expert in aligning technical solutions with business goals and user needs. Passionate about building collaborative teams and co-creating innovative products with clients.
Skills
Ruby, Elixir, Golang, Javascript, Angularjs, Reachjs, Mongodb, Redis, Mysql, Postgresql, Python, C++, Java, Ios, Typescript, Nodejs, Html/Css, Saas, Netapp, Vmware, Kubernetes, Aws, Docker, Prometheus, Graphana, Ansible, Terraform, Tensorflow, Pytorch.
Mentoring In Startup Ecosystems, Panel Speaking, Cycling, Science Fiction, And Coffee Culture.
Languages
Education
Universidad Mariano Gálvez
B.S.E · Computer Science · Guatemala
Universidad Mariano Gálvez
Master’s degree · Computer Science · Guatemala
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Dennis is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.
Dennis speaks the following languages: English (Advanced), Spanish (Advanced), German (Elementary).
Dennis has at least 16 years of experience. During this time, Dennis has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 3 years and 9 months. Note that Dennis may not have shared all experience and actually has more experience.
Based on recent experience, Dennis would be well-suited for roles such as: Co-founder & Chief Technology Officer, Chief Technology Officer / Chief Product Officer, Chief Technology Officer.
Dennis's most recent position is Co-founder & Chief Technology Officer at Delta Technologies.
In recent years, Dennis has worked for Delta Technologies and Wishpond Technologies.
Dennis is most experienced in industries like Information Technology.
Dennis is most experienced in business areas like Product Development, Information Technology, and Operations. Dennis also has some experience in Research and Development and Strategy.
Dennis has recently worked in industries like Information Technology.
Dennis has recently worked in business areas like Information Technology and Product Development.
Dennis holds a Master in Computer Science from Universidad Mariano Gálvez and a Bachelor in Computer Science from Universidad Mariano Gálvez.
The availability of Dennis needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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 26 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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