You will get an efficient back-end implementation of your API endpoints
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Top Rated
Project details
Getting the correct architecture for your API endpoints is not always an easy thing to do. This often requires integrating complex logic and making use of libraries that can put you on a fast track to getting gray hair.
What I can do for you is the following:
• Define the API endpoints based on your project requirements.
• Implement functionalities to perform CRUD operations on your preferred database.
• Integrate third party services such as (but not limited to) Stripe or Firebase.
• Perform complex functionalities tailored to your solution needs.
• Deliver documentation and Postman requests that describe API endpoint usage.
• Deploy your solution to a cloud hosted resource on Azure, Google Cloud or AWS.
What I require from you is to deliver a document with a brief explanation of your project and a more detailed overview of the functionalities that you want to achieve with your API endpoints.
I am always available to answer your questions even before you book any of the offered packages, so do not hesitate to contact me!
What I can do for you is the following:
• Define the API endpoints based on your project requirements.
• Implement functionalities to perform CRUD operations on your preferred database.
• Integrate third party services such as (but not limited to) Stripe or Firebase.
• Perform complex functionalities tailored to your solution needs.
• Deliver documentation and Postman requests that describe API endpoint usage.
• Deploy your solution to a cloud hosted resource on Azure, Google Cloud or AWS.
What I require from you is to deliver a document with a brief explanation of your project and a more detailed overview of the functionalities that you want to achieve with your API endpoints.
I am always available to answer your questions even before you book any of the offered packages, so do not hesitate to contact me!
Programming Languages
JavaScript, Python, TypeScriptWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$400
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 10 days |
Number of Revisions | 2 | 2 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $100
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$50
CI/CD pipeline
+$100
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AS
Ahmed S.
Nov 17, 2025
AI App Engineer: React, Python, GCP & LLMs
I had the pleasure of working with Bogdan, and I can’t recommend him highly enough.
He stepped into the project under particularly challenging conditions: my previous developer left overnight without any notice, leaving behind outdated or incomplete documentation.
Despite this, Bogdan successfully took on the challenge, quickly understood how the product worked, cleaned up the existing codebase, and efficiently fixed production issues.
He handled a wide range of topics — back-end, front-end, AI, prompts, SEO, infrastructure — entirely autonomously, with strong analytical skills and a proactive mindset.
His work was always fast, meticulous, and highly reliable, and his responses consistently on point.
His clear and structured reporting made the collaboration extremely smooth.
In short: a dependable, versatile, highly skilled, and fully committed developer. I recommend him without hesitation.
He stepped into the project under particularly challenging conditions: my previous developer left overnight without any notice, leaving behind outdated or incomplete documentation.
Despite this, Bogdan successfully took on the challenge, quickly understood how the product worked, cleaned up the existing codebase, and efficiently fixed production issues.
He handled a wide range of topics — back-end, front-end, AI, prompts, SEO, infrastructure — entirely autonomously, with strong analytical skills and a proactive mindset.
His work was always fast, meticulous, and highly reliable, and his responses consistently on point.
His clear and structured reporting made the collaboration extremely smooth.
In short: a dependable, versatile, highly skilled, and fully committed developer. I recommend him without hesitation.
MG
Mason G.
Jul 16, 2025
Help needed for text to speech chrome extension
Bogdan is great! Super communicative and stellar coding skills. I will continue to work with him on future projects.
MS
Miroslav S.
Jul 15, 2025
Dynamic Prompt Management Program
Bogdan, thanks a lot for this very successful collaboration. I truly appreciate your expertise and assistance.
JC
JJ C.
Jul 10, 2025
AI Dev integration
Capable and flexible. Would strongly recommend.
AS
Ahmed S.
Jul 10, 2025
parallelization of GCP processing
I had the pleasure of working with Bogdan on a strategic assignment. He was extremely efficient, gave very good advice and was able to intervene quickly, even proposing solutions that went beyond the initial brief. His ability to step back and correct problems quickly made all the difference. I highly recommend his expertise!
About Bogdan Alex
Senior Full-Stack + AI Engineer | LLMs, RAG, Agents
100%
Job Success
Amsterdam, Netherlands - 3:21 pm local time
I'm a senior full-stack engineer with a decade of shipping behind me — and over the last few years, AI integration has become the part of the work I'm most useful at. Not as a prompt engineer or a deck-and-disappear consultant, but as the person who sits in a discovery call, understands your product and workflows, identifies where a model, an embedding store or an agent actually moves the needle, and then builds it. Same pair of hands, all the way through.
That's the part most teams are missing right now. AI consultants who can't ship. Engineers who can ship but can't tell you whether the LLM is the right answer in the first place. I do both, and the value is in not splitting them apart.
How engagements usually start
Most projects start with a call. You tell me what you're trying to build or where you're stuck, I ask questions, and we figure out together whether AI is actually the right answer — and if so, what the smallest useful first step looks like. Sometimes that's a one-page plan and an estimate. Sometimes it's a longer paid discovery if the product is complex enough to warrant it. Either way, I'll tell you honestly when an LLM is the wrong answer — that's part of the value of talking to someone who builds these systems, not just advises on them.
What I build
– AI & LLM integration · OpenAI, Vertex AI, Bedrock, LangChain. RAG systems, chatbots, agentic workflows, prompt and eval pipelines, embeddings, vector stores. Production-grade — not demos.
– Frontend · React, Next.js, Angular, TypeScript. Component-driven UIs, accessibility, performance — built to stay fast at year three.
– Backend · NestJS, Express, Python (FastAPI / Django). REST and GraphQL APIs, event-driven systems, queues, background workers.
– Data · PostgreSQL, MySQL, MongoDB, vector databases. Schema design, indexing, query plans — the unglamorous parts that decide whether the app holds up under real load.
– Cloud & DevOps · Azure, AWS, GCP. Kubernetes, serverless, Terraform / Bicep, CI/CD on Azure DevOps and GitHub Actions. Zero-downtime deploys.
– Integrations · Stripe, Firebase Auth, Azure AD B2C, messaging, analytics — wired in cleanly, failure paths covered.
How I work
Direct, written-first, async-friendly across timezones. Long-running, end-to-end engagements are where I do my best work — I plug in, learn the product, and keep it moving. I take on unfamiliar stacks and domains on purpose. That's usually the part I want.
If you've got something ambitious — an AI feature you're not sure how to scope, a product that needs to ship with AI baked in from day one, or a vague idea you need someone to think through honestly before writing any code — let's talk.
Steps for completing your project
After purchasing the project, send requirements so Bogdan Alex can start the project.
Delivery time starts when Bogdan Alex receives requirements from you.
Bogdan Alex works on your project following the steps below.
Revisions may occur after the delivery date.
Introduction call
Initial meeting to clarify the requirements of the project and present execution plan.
Deliverable presentation
Presentation of final deliverables with demo on API endpoint functionality and usage.