salih barış özaysoftware developer
tr
software for individuals and businesses

software development services.

i develop custom software for individuals and businesses. from new products to improvements and system integrations, i work on projects with an agreed scope, timeline and acceptance criteria.

let’s discuss your project
01

backend development

i develop application backends with c# and asp.net core. i design business rules, data models and access permissions around your project, supporting new apis and existing backend features with tests and documentation.

project deliverables

  • rest api and openapi documentation
  • business rules, validation and authorization
  • database model and automated tests

c# · asp.net core · entity framework core · postgresql / sql server

backend development · explore the scope
02

full stack web development

i build web applications from the user interface to the database with angular and .net. i plan screens and workflows around user needs, handling the frontend, backend and data layer within the same project scope.

project deliverables

  • responsive angular interface
  • frontend, api and database integration
  • setup and run documentation

angular · typescript · asp.net core · sql

full stack web development · explore the scope
03

api and system integration

i develop api integrations connecting your software with external services and erp modules. i review data mappings, access requirements and failure scenarios to align data flows with your existing business processes.

project deliverables

  • service contracts and data mapping
  • error handling and retries where appropriate
  • integration tests and technical documentation

rest · openapi · c# · sql

api and system integration · explore the scope
04

maintenance and performance

i review code and databases to identify issues and prioritize them by their impact on business processes. i verify fixes and performance improvements with tests, and report changes and measurable results.

project deliverables

  • issue analysis and prioritized work items
  • bug fixes, query or code improvements
  • regression tests and change notes

.net · sql server · postgresql · nunit / xunit

maintenance and performance · explore the scope

explore how i work

corporate erp experience

c#/.net backend development across modules of an existing textile erp at turkmen holding, may 2022–march 2025.

work experience

technical approach

explore my software development notes, practical examples and technical approaches on the articles page.

explore the articles

project process

  1. requirements analysis

    we review your goals, user needs and existing systems to define the problem and priorities.

  2. scope and planning

    we agree on deliverables, acceptance criteria, timeline and pricing before development starts, including the arrangements for on-site or remote work.

  3. development and feedback

    we regularly review working versions. i share progress, and we agree on the time and cost impact of scope changes before implementation.

  4. validation and handover

    after the agreed tests and acceptance checks, i deliver the source code and setup documentation. we agree separately on ongoing support terms.

before we start

do you offer freelance software development?
yes. i offer project-based backend development, full stack web applications, api integrations and maintenance for existing .net systems. share your needs so we can assess the scope and fit.
which technologies do you use?
i use c# and asp.net core for the backend, and angular and typescript for the frontend. for data access i work with entity framework core, postgresql and sql server. technology and architecture choices depend on the project.
how are pricing and delivery timelines determined?
pricing and timelines depend on scope, the existing code, integrations and acceptance criteria. share a short project description, priorities, target date and a budget range if you have one.
can you join an existing project?
yes. i can assess bug fixes, new features, api integrations and performance improvements for an existing .net backend or angular application. i first review the architecture and development environment.
what are your on-site and remote working options?
based in ümraniye, istanbul, i provide software development services for individuals and businesses. i work on-site in istanbul according to project needs, and remotely across turkey and internationally. we agree on the working model, communication and timeline at the start of the project.
can i book consulting or a code review on its own?
yes. i can review an existing .net application, investigate code and database queries, and provide prioritized improvement recommendations. we agree on the review scope and report before starting. implementation can be planned separately.
are source code and ongoing support included?
source code and the documentation needed to run the project are part of the delivery scope. we agree separately on maintenance, the bug-fix period and further development at the outset.

let’s take the first step on your project.

share your requirements, existing system and target date. we can assess the scope and working model that suit your project.

let’s discuss your project