At Jellyfish.tech, we bridge the gap between "it works as a demo" and "it's production-ready." In an era of instant AI prototypes, the real challenge isn't building fast—it's building right. We specialize in taking complex visions and turning them into stable, scalable, and secure digital products. Whether we are architecting an AI agent from scratch or rescuing a legacy system that has hit a technical ceiling, we focus on engineering integrity that supports business growth.
What we do best:
- AI-Driven Development & R&D. Beyond the hype. We build intelligent systems (LLMs, Agentic AI, Vector search) with deterministic logic and predictable costs.
- Software Modernization (The "Rescue Mission"). We take over legacy or fragmented AI-generated codebases, refactor the architecture, and make them scalable.
- MVP to Scale. We use AI to prototype in days, but apply senior human judgment to ensure the foundation can handle the first 10,000 users.
The Jellyfish.tech Advantage:
- We cut time-to-market by 30% using AI-driven prototyping (Vercel v0, etc.), allowing you to test hypotheses before committing to heavy development.
- We don't just "prompt" code. Our senior engineers define the architecture first, ensuring that AI-assisted contributions are secure, tested, and maintainable.
- Founded by product leaders, we speak the language of ROI and business logic, not just syntax and frameworks.
- We choose quality over quantity. You get direct access to senior expertise, transparency, and a team that takes full ownership of the outcome.
Core Industry Expertise:
- AdTech & Marketing Automation (Google Ad Grants tools, keyword intelligence, ROI tracking)
- AI Intelligence (Meeting automation, Agentic workflows, R&D)
Min project size
$10,000+
Hourly rate
$25 - $49 / hr
Employees
10 - 49
Locations
Kyiv, Ukraine
Year founded
Founded 2016
2 Locations
Kyiv , Ukraine
Kraków , Poland
No have been added yet...
Pricing Snapshot
Min. project size
$10,000+
Avg. hourly rate
$25 - $49
/hr
Rating for cost
4.9
/5
What Clients Have Said
Jellyfish.tech offers competitive pricing and good value for cost, with clients noting budget alignment and high-quality deliverables. Project costs vary, with one client investing over $10,000, while another reported $50,000-$100,000. Clients appreciate their reliability and proactive communication.
Jellyfish.tech's contributions have led to measurable business impacts, including increased user engagement, improved usability, and successful product launches, demonstrating their effectiveness in driving client success.
Proactive and Collaborative Communication
Clients consistently praise Jellyfish.tech for their proactive communication and collaborative approach. They use various communication tools like Slack, Trello, and Skype to ensure smooth project management and client interactions.
Areas for Improvement in Testing
While Jellyfish.tech generally delivers reliable work, some clients noted occasional glitches and suggested improvements in testing processes to enhance overall quality control.
Valuable Technical Insights
Clients value Jellyfish.tech's ability to provide insightful technical advice that often leads to cost savings and improved project outcomes. Their expertise helps clients make informed decisions about technology and implementation strategies.
Impressive Client Integration
The team at Jellyfish.tech integrates seamlessly with clients, often being seen as an extension of the client's own team. This integration fosters a strong partnership and enhances project execution.
Commitment to Quality and Integrity
Jellyfish.tech is lauded for their integrity, honesty, and commitment to quality. Clients appreciate their straightforward communication and dedication to delivering robust solutions tailored to client needs.
Web Application Development for Telecommunications Company
Web Development
Less than $10,000
Sep. 2016 - Apr. 2017
4.5
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0
"I appreciated the fact that they conveyed constructive criticisms and ideas on how to solve problems."
May 9, 2017
Senior Business Analyst, Telecom Equipment Company
Anonymous
Verified
Telecommunications
Stockholm, Sweden
201-500 Employees
Phone Interview
Verified
Jellyfish developed a Django web application to optimize a product configuration system. The app essentially facilitates adding and configuring data for mobile networks.
Jellyfish delivered a strong, functional app. They employed an efficient sprint methodology to deliver project elements on a weekly basis. The team contributed valuable insight into the best solution to each challenge. The final solution was delivered on time and on budget.
A Clutch analyst personally interviewed this
client over the phone. Below is an edited
transcript.
BACKGROUND
Introduce your business and what you do there.
I’m a senior business analyst in a company that develops equipment for the telecom industry. I’m like an internal consultant for projects.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with Jellyfish?
We had issues with our old system, so we wanted help in building a web application that would help us to make a better configuration system for our products. We didn’t have the time or the resources to do it internally.
SOLUTION
What was the scope of their involvement?
It’s a Django web server app that provides the possibility to add and configure reference data for mobile networks. It’s like configuring your router at home, but for a system. They provided all the help. We used a Scrum board for the work. For the payment, we had another system. For the code, we had GitHub. They helped me set this all up because I’m new to this. I was working only with one person.
How did you come to work with Jellyfish?
I was looking for an offshore company, but I had no previous experience in offshore development. I found them on Upwork. I searched for full-stack web developers who had competence with Python.
How much have you invested with Jellyfish?
It’s been less than $1,000.
What is the status of this engagement?
It was September or October 2016 that we started working with them. They completed everything a month ago.
RESULTS & FEEDBACK
Could you share any evidence that would demonstrate the productivity, quality of work, or the impact of the engagement?
I can give you my own feedback, and it’s that they did a good job. The app is good and runs smoothly. It was not a complicated web GUI, but the logic behind it was very complex. I appreciated the effort that they gave in that sense. If we were to do the app on our own, it would be a lot of dollars. It was a lot cheaper with Jellyfish than doing it here.
How did Jellyfish perform from a project management standpoint?
They performed very well. We used a Scrum board; for me, that was new in the beginning, but they taught me. I paid along as I got functionality. We had weekly drops of software, and then I tested and paid. It was a good setup. They were good with communication. We mostly had Skype chats for conversations. They were good in delivering things on time and within the budget, so there’s nothing to complain about.
What did you find most impressive about Jellyfish?
I appreciated the fact that they conveyed constructive criticisms and ideas on how to solve problems in another way than I anticipated.
Are there any areas Jellyfish could improve?
No. I had a really small project. It could be better with the timeline, but I didn’t pay so much.
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