d.Dzmitry Dziachenka
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Independent developer

Dzmitry Dziachenka

Based in Georgia · working worldwide

01Backend02iOS03Landing pages
Building software since 2019

I help launch products, build new features and solve technical problems. I take on individual projects and work with teams on an ongoing basis.

Explore the work
Dzmitry Dziachenka smiling in a studio
01 / Backend

Behind everyinteraction.

I design APIs, connect services and help improve existing systems.

/01

Architecture & APIs

Service boundaries, business logic and distributed systems.

/02

Billing & integrations

Subscriptions, calculations and the flow of data between services.

/03

Infrastructure

Environments, releases and monitoring. AWS and Cloudflare.

/04

Development & support

Performance improvements, testing and fixes.

Simplified architecture example
  1. 01

    API

    Receive the request

    Validate the input and check permissions.

  2. 02

    Logic

    Apply the rules

    Run a calculation, check a subscription or create an order.

  3. 03

    Data

    Save the result

    Save changes so the system can use them later.

  4. 04

    Integrations

    Connect the services

    Pass information to billing, a CRM or another system.

  • Java
  • Kotlin
  • Python
  • AWS
  • Cloudflare
02 / iOS apps

From ideato the App Store.

Five apps I’ve built and published on the App Store, each focused on an everyday task.

App Store screenshots ↘

01 / Photo & video

Photo Negative Scanner

Scan developed negatives, adjust colour and save full-resolution photographs. Images are processed on your iPhone.

App Store
View screenshots

App Store screenshots

Photo Negative Scanner — A negative beside the finished photo, with colour styles to choose from.
A negative beside the finished photo, with colour styles to choose from.
Photo Negative Scanner — The camera view with a guide for framing the negative and a photo import button.
The camera view with a guide for framing the negative and a photo import button.
Photo Negative Scanner — Controls for exposure, warmth and tint.
Controls for exposure, warmth and tint.
Photo Negative Scanner — The frame list and options to save the whole roll to Photos or a folder.
The frame list and options to save the whole roll to Photos or a folder.
Photo Negative Scanner — Cropping and perspective correction using the four corners of the negative.
Cropping and perspective correction using the four corners of the negative.

Photo Negative Scanner · three steps

From negative to photograph

Photo Negative Scanner — The camera view with a guide for framing the negative and a photo import button.
01 /
Capture

Photograph a developed negative or import an image. Guidance helps with lighting, focus and framing.

Photo Negative Scanner — Controls for exposure, warmth and tint.
02 /
Adjust

Crop, correct perspective and adjust colour. Images are processed on your iPhone.

Photo Negative Scanner — The frame list and options to save the whole roll to Photos or a folder.
03 /
Save

Export the full-resolution photo to Photos or Files, or send it through the share sheet.

02 / Fitness

Bodybuilding Posing & Photo

Practise bodybuilding poses, compare your pose with a reference photo and get feedback on your technique.

App Store
View screenshots

App Store screenshots

Bodybuilding Posing & Photo — Two modes: stage pose practice and comparison with a reference photo.
Two modes: stage pose practice and comparison with a reference photo.
Bodybuilding Posing & Photo — A pose catalogue with reference photos and filters for category and difficulty.
A pose catalogue with reference photos and filters for category and difficulty.
Bodybuilding Posing & Photo — A pose comparison with a score and body position overlays.
A pose comparison with a score and body position overlays.
Bodybuilding Posing & Photo — Three priority corrections for knee and wrist position.
Three priority corrections for knee and wrist position.
Bodybuilding Posing & Photo — A front double biceps analysis with a score and coaching feedback.
A front double biceps analysis with a score and coaching feedback.
Bodybuilding Posing & Photo — Practice history with an overall score, a progress chart and scores for individual poses.
Practice history with an overall score, a progress chart and scores for individual poses.
Bodybuilding Posing & Photo — Photo selection for a pose comparison, with an option to mirror the reference.
Photo selection for a pose comparison, with an option to mirror the reference.
03 / Journal

Lunar: AI Dream Interpreter

Keep a dream journal, explore AI interpretations and spot recurring themes on a visual dream map.

App Store
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App Store screenshots

Lunar: AI Dream Interpreter — A dream entry with space for the story, mood and memorable details.
A dream entry with space for the story, mood and memorable details.
Lunar: AI Dream Interpreter — An AI interpretation exploring a dream’s symbols and mood.
An AI interpretation exploring a dream’s symbols and mood.
Lunar: AI Dream Interpreter — A dream map showing connected dreams and recurring symbols.
A dream map showing connected dreams and recurring symbols.
Lunar: AI Dream Interpreter — Journal insights with connections between dreams and recurring themes from the week.
Journal insights with connections between dreams and recurring themes from the week.
Lunar: AI Dream Interpreter — Settings for AI interpretation and deleting dream entries.
Settings for AI interpretation and deleting dream entries.
04 / Focus

App Blocker: StayBrief

Choose why you’re opening an app and for how long. StayBrief blocks it again when your time is up.

App Store
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App Store screenshots

App Blocker: StayBrief — An overview of sessions: purpose, time limit, reminders and app blocking.
An overview of sessions: purpose, time limit, reminders and app blocking.
App Blocker: StayBrief — Starting a session by choosing a purpose and a time limit.
Starting a session by choosing a purpose and a time limit.
App Blocker: StayBrief — An example session with a purpose and a time limit. Only time spent in the selected app counts.
An example session with a purpose and a time limit. Only time spent in the selected app counts.
App Blocker: StayBrief — Screen Time access explained, including what StayBrief can and cannot do.
Screen Time access explained, including what StayBrief can and cannot do.
App Blocker: StayBrief — Settings for protected apps, purposes, session lengths and notifications.
Settings for protected apps, purposes, session lengths and notifications.
05 / Health & fitness

Calorie Arc: Energy Balance

Log food and activity, and track your estimated calorie balance over time. You can also import activity data from Apple Health.

App Store
View screenshots

App Store screenshots

Calorie Arc: Energy Balance — Overall progress and a daily calorie balance based on food and activity.
Overall progress and a daily calorie balance based on food and activity.
Calorie Arc: Energy Balance — Adding a meal with calories, notes and an option to save it for later.
Adding a meal with calories, notes and an option to save it for later.
Calorie Arc: Energy Balance — Activity imported from Apple Health alongside manually added workouts.
Activity imported from Apple Health alongside manually added workouts.
Calorie Arc: Energy Balance — A calendar of daily calorie balances with links to weekly summaries.
A calendar of daily calorie balances with links to weekly summaries.
Calorie Arc: Energy Balance — An explanation of data privacy and how the calorie balance is calculated.
An explanation of data privacy and how the calorie balance is calculated.
03 / Landing pages

Five websites.Five personalities.

Five concept websites for different businesses and audiences. Explore the designs and try each one.

Concept project
2026 / WEB

01

POROG

Open full demo
Preview: POROG

Scroll through the demo and try it out.

Architecture · Concept project

An architecture studio website with an interactive floor plan.

Choose an everyday scenario to explore the rooms, light and route through the house.

02

MERA

Open full demo
Preview: MERA

Scroll through the demo and try it out.

Subscription analytics · Concept project

An analytics landing page with an interactive product demo.

Change the period or channel to update the metrics, chart and table together.

03

VELI House

Open full demo
Preview: VELI House

Scroll through the demo and try it out.

Hospitality · Concept project

A boutique hotel website with room selection and a stay planner.

Choose a room, dates and the number of guests to put together a summary of your stay.

04

SBORKA

Open full demo
Preview: SBORKA

Scroll through the demo and try it out.

Creative workshops · Concept project

A creative workshop website with a programme builder.

Choose a goal, group size and format to assemble a workshop programme.

05

BEREG

Open full demo
Preview: BEREG

Scroll through the demo and try it out.

Home support · Concept project

A home support website that clearly explains the service and what it covers.

Open the day’s chapters to see what everyday support can look like.

04 / About me

Hi,I’m Dzmitry.

My work spans enterprise systems, my own iOS apps and websites. I care about how a product works behind the scenes and how it feels to use.

More on LinkedIn

Ways we can work together

01 /

Development

Build a new product or add a feature.

02 /

Technical consulting

Work through a technical problem, review a solution or discuss product architecture.

03 /

Ongoing support

Fix issues, release updates and improve your product.

04 /

Working with your team

Join for a specific task or contribute over the longer term.

05 /

Technical co-founder

Open to discussing a product we could build and grow together.

Discuss an idea

Experience

2023 — present

CloudLinux

Software Engineer · Contract

Development and maintenance of billing services, integrations with external systems, release automation and monitoring.

2019 — 2023

EPAM

Junior Software Engineer → Software Engineer → Senior Software Engineer

Worked on three enterprise projects for large international companies. Built new features, maintained and improved existing services, and contributed to releases. Supported systems in production and worked on integrations, performance and reliability.

Technology & tools

Backend

  • Java
  • Kotlin
  • Spring Boot
  • PostgreSQL
  • Redis
  • Kafka

APIs, business logic and data exchange between services.

iOS

  • Swift
  • SwiftUI
  • Xcode

iPhone apps, from interface development to App Store release.

Frontend

  • JavaScript
  • React
  • HTML
  • CSS

Responsive pages and interactive features.

Infrastructure & delivery
AWS · Cloudflare · Docker · GitLab CI/CD
Testing & monitoring
JUnit · Testcontainers · Prometheus · Grafana
Automation & AI
Python — scripting and automation · Claude · Codex
05 / Let’s talk

Let’s talk aboutwhat you need.

Tell me what you want to build or where you need help. We can start with an idea, a technical question or a product that needs ongoing support.

Message me on Telegram
A short message is enough to get started.LinkedIn

App Store screenshots