Hire the Best Software Maintenance Specialists

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Rating is 4.8 out of 5.
4.8/5
Based on 938 client reviews
Imdad H.

Islamabad, Pakistan

$25/hr
5.0
1 jobs

I’m a Senior Software Engineer and Technical Lead with 16+ years of hands-on experience building, modernizing, integrating and supporting business-critical web applications. My strongest experience is in complex enterprise systems where software is closely connected to real business processes — including e-commerce, order management, warehouse management, inventory, purchasing, POS, CRM and multichannel sales. I work across both Microsoft .NET and PHP ecosystems and can take a project from understanding the existing system and business requirements through architecture, development, integration, performance optimization, modernization and deployment. My core experience includes: • ASP.NET, ASP.NET MVC, ASP.NET Core, .NET Framework, WebForms and Web API • PHP, Laravel and modern web development • JavaScript, jQuery, React, Vue.js, HTML/CSS and AJAX • SQL Server, T-SQL, MySQL, database design, stored procedures, indexing and query optimization • REST, SOAP, GraphQL, webhooks and third-party API integrations • Event-driven and asynchronous processing • Legacy application modernization and incremental migration • Software architecture, system design and technical decision-making • Code reviews, technical specifications and development-team guidance • Performance analysis and optimization at application and database level I have extensive experience integrating enterprise systems with platforms such as Shopify, Magento, WooCommerce, Fortnox, Visma, Business Central, Ongoing Warehouse, Jira, Tempo, Upsales, Microsoft 365 and Google Cloud/BigQuery. A significant part of my work has involved modernizing large existing systems without disrupting day-to-day business operations. For example, I designed and implemented a hybrid migration approach for a major ASP.NET WebForms system, allowing existing WebForms functionality to remain operational while functionality was gradually moved toward ASP.NET MVC. I also work hands-on when a problem is difficult. When a performance, architecture, database or integration problem requires deeper investigation, I prefer to understand and solve the underlying problem rather than simply work around the symptoms. I can work as a senior individual contributor, technical lead, or as the technical lead for a development team when a project requires broader ownership. If you have an existing application that needs modernization, a complex integration that needs to work reliably, a performance problem that has been difficult to solve, or a new business system that needs experienced technical direction, I can help assess the situation and determine the most practical way forward.

  • ASP.NET
  • C#
  • ASP.NET Core
  • .NET Core
  • .NET Framework
  • Full-Stack Development
  • PHP
  • Microsoft SQL Server
  • RESTful API
  • Web API
  • Software Architecture
  • Solution Architecture
  • Database Design
  • MySQL
  • JavaScript
  • Laravel
  • React
  • API Integration
  • Enterprise Resource Planning
  • Vue.js
Urvashi P.

Ahmedabad, India

$15/hr
5.0
2 jobs

Hi! Are you looking for someone who can do project management, develop high-quality web applications and ensure they are thoroughly tested before release? I'm a Full Stack Developer, Project Manager & QA Engineer with 5+ years of experience helping startups and businesses build reliable, scalable, and user-friendly software. My combined development and testing expertise allows me to deliver applications that are not only feature-rich but also stable and production-ready. I can help you with: ### Full Stack Development ✅ Develop web applications using ASP.NET Core, C#, Angular, React, JavaScript, and TypeScript ✅ Build secure REST APIs and backend services ✅ Design and optimize SQL Server and MySQL databases ✅ Integrate third-party APIs and authentication systems ✅ Enhance existing applications with new features and performance improvements ✅ Deploy applications using Azure and CI/CD pipelines ### QA & Testing ✅ Manual Testing (Functional, Regression, Smoke, UAT) ✅ Test Case & Test Plan Creation ✅ API Testing using Postman ✅ Cross-Browser & Cross-Device Testing ✅ Bug Reporting and Tracking using JIRA ✅ Automation Testing with Selenium (basic to intermediate) ✅ End-to-End Validation before Production Releases ### Core Skills * ASP.NET Core & C# * Angular & React * JavaScript & TypeScript * HTML5, CSS3 & Bootstrap * REST APIs * SQL Server & MySQL * Entity Framework * Azure * Git & GitHub * Azure DevOps * JIRA & Confluence * Selenium * Postman * CI/CD ### Industry Experience * Banking * Real Estate * Gaming * Taxation * Enterprise Applications I understand both the **development lifecycle and quality assurance process**, enabling me to identify issues early, build maintainable solutions, and deliver software that meets business expectations. 📩 Whether you need a Full Stack Developer, a QA Engineer, or someone who can handle both, I'd be happy to help bring your project to life.

  • Requirement Analysis
  • Documentation
  • Wireframing
  • Prototyping
  • Scrum
  • User Acceptance Testing
  • Functional Testing
  • Project Management
  • Scaled Agile Framework
  • Quality Control
  • Agile Project Management
  • Quality Assurance
  • Manual Testing
  • Mockup
  • Jira
  • Trello
  • Figma
  • Balsamiq
  • AWS Development
  • ASP.NET
Teresa F.

Milan, Italy

$20/hr
5.0
2 jobs

I’m a Software Engineer and Enterprise Software Architect with experience designing and developing scalable, high-performance applications for enterprise environments. I work across the full stack, with a strong focus on backend development as well as modern frontend applications. I can help you build new applications, develop backend services and APIs, integrate systems, improve existing applications, troubleshoot complex issues, or test your product from both a technical and user experience perspective. I specialize in Java, Spring Boot, REST APIs, microservices, cloud-native architectures, and modern frontend development with Angular and React. My expertise includes: - Backend: Java 8+, Spring Boot, Spring MVC, Spring Security, REST APIs, Microservices - Frontend: Angular, React, JavaScript, TypeScript, HTML/CSS - Databases: SQL (PostgreSQL, Oracle, MySQL) and NoSQL (MongoDB) - Cloud & DevOps: Docker, Kubernetes, Jenkins, CI/CD, AWS (EC2, S3, CodeCommit) - Event-driven architectures: Kafka - Testing & Code Quality: JUnit, Jest, SonarQube, automated testing - UX/UI Testing: usability testing, technical UX/UI review, functional testing, and identifying usability issues from a developer’s perspective - AI & Generative AI: AI-assisted software development, LLM-based solutions, AI application architecture, prompt engineering, and integration of AI capabilities into software applications My background as both a developer and software architect allows me to look at a product from multiple perspectives: technical architecture, code quality, functionality, performance, and user experience. I focus on writing clean, maintainable, and well-documented code while delivering reliable solutions on time. Clear communication and transparency are essential to me, so you’ll always know the progress of your project. Whether you need a Full-Stack Developer, Backend Engineer, Software Architect, or a technical perspective on UX/UI and product quality, I can help turn your idea into a reliable and scalable solution. Let’s build something great together! :)

  • Java
  • Spring Boot
  • Apache Kafka
  • Kubernetes
  • AWS Development
  • Docker
  • Splunk
  • Oracle
  • PostgreSQL
  • MongoDB
  • Software Development
  • Oracle PLSQL
  • Angular
  • Enterprise Architecture
  • Microservice
  • Angular 10
  • React
  • UX & UI Design
  • Accessibility Testing
  • Interface Testing
Alexander Y.

Kiryat Ono, Israel

$100/hr
5.0
42 jobs

I help founders and product teams ship high-quality software quickly when the cost of sloppy delivery is too high. I am a senior full stack developer and hands-on software architect with 20 years of experience across SaaS, web, mobile, DevOps, databases, AI, and product engineering. I can lead a team, pair with your existing developers, or work entirely independently from elicitation through production delivery. I am strong at elicitation and continuous communication. I can take an unclear product goal, extract the real requirements, keep the feedback loop tight, and turn ambiguity into small testable decisions. My default way of working is XP: TDD, BDD, small releases, CI/CD, automated checks, and clear acceptance criteria. I use AI agents heavily inside that engineering loop. With agents, I can multiply my implementation speed many times while still keeping the work grounded in tests, specs, review gates, and evidence that the behavior is correct. Thousands of tests are no longer an enterprise luxury. With the right architecture and agent workflow, they are one of the fastest ways to keep delivery speed high. I work by the scientific method: identify the riskiest assumption, make it testable, run the smallest useful experiment, and let evidence drive the next step. The goal is production-ready software: maintainable code, real tests, deployment discipline, data safety, and behavior that can survive real users. A proof-of-concept is useful only when it proves the path toward that standard. Recent relevant work: - Software architect for an online fitness platform, with feature delivery and technical leadership for backend and web developers. - Public PostgreSQL tooling for schema diffing and migration parity. - XP-style CI/CD for a TypeScript MCP/reporting service, including tests, coverage, hardening checks, contract review, prompt/tool evaluation, deployment, and live verification. - Actor-based high-load architecture and media delivery/storage architecture work. - AI prompt evaluation and test harness work for healthcare SaaS. Good fit for: - fractional CTO / architecture review - TypeScript, Node.js, React, PostgreSQL - AI-assisted development with real tests and guardrails - legacy modernization, delivery stabilization, CI/CD, and testing strategy If you want fast software delivery with engineering discipline behind it, I can help.

  • Architecture
  • Software Design
  • Test-Driven Development
  • Distributed Computing
  • AI Agent Development
  • Automated Testing
  • SaaS
  • SaaS Development
  • TypeScript
  • PostgreSQL
  • PostgreSQL Programming
  • Technical Writing
  • Team Management
  • Software Architecture
  • Node.js
  • React
  • Next.js
  • DevOps
  • Continuous Integration
  • Cloudflare
Aleksandar J.

Veles, North Macedonia

$20/hr
5.0
6 jobs

I'm Aleksandar Janushev a Top Rated IT Operations & Support Engineer with 5+ years of hands-on experience supporting end users, managing cloud infrastructure, and keeping businesses running smoothly. My background includes working at enterprise-level companies (Seavus / Avenga , Qinshift , Scotch & Soda B.V , Deutsche Glasfaser , Sunrise.) where I was responsible for mission-critical IT systems 🎧 Helpdesk & End-User Support — Tier 1 / Tier 2 / Tier 3 technical support for Windows environments — Remote troubleshooting, diagnosis & resolution (hardware + software) — Laptop/desktop setup, configuration & performance optimization — Fast response time with clear, jargon-free communication — Service Now deployments ☁️ Microsoft 365 & Cloud Administration — Full Microsoft 365 / Office 365 tenant administration & architecture — Azure AD / Entra ID, hybrid identity & cloud integration — Tenant-to-tenant & on-premise to cloud migrations — Exchange Online, Teams, SharePoint & license management 🔒 Security & Endpoint Management — Microsoft Intune device deployment & management — Microsoft Defender implementation & security hardening — Conditional Access, compliance policies & risk mitigation — DNS, MX, SPF, DKIM & DMARC configuration 🖥️ Infrastructure & Systems — Windows Server & Active Directory (on-prem & hybrid) — VPN & network connectivity support — Infrastructure design, monitoring & incident resolution — Technical documentation & process improvement 📧 Email & Collaboration — Google Workspace → Microsoft 365 migrations (zero data loss) — Mail flow configuration & advanced troubleshooting — Domain management & optimization I hold a Microsoft 365 Certified: Administrator Expert certification and a Computer Science degree from International Slavic University. I'm fluent in English and respond within hours — not days. Whether you need someone to jump on an urgent issue, manage your M365 environment ongoing, or migrate your entire organization to the cloud — I've done it, and I'll do it right. Let's solve your IT problems today.

  • Windows 10 Administration
  • WordPress Theme
  • Computer Maintenance
  • Administrative Support
  • WordPress Malware Removal
  • Web Development
  • Windows 7 Administration
  • WordPress
  • WordPress Plugin
  • Microsoft Active Directory
  • Azure DevOps
  • Office 365
  • DNS
  • Computer Operating System
  • Android
Karim N.

Cairo, Egypt

$9/hr
5.0
7 jobs

I help businesses solve technical problems, build reliable solutions, and keep their day-to-day operations running smoothly. As a IT Engineer and my background that combines IT & Technical Support, Software Development, Virtual Assistance, and Customer Support. Whether you need someone to troubleshoot an issue, develop, review code or improve a solution, assist with technical tasks, manage ongoing operations, or communicate professionally with customers, I bring a practical and dependable approach to every project. I genuinely enjoy working with clients, understanding what they need, and finding the right solution without unnecessary complications. Clear communication, responsiveness, and building strong working relationships are just as important to me as delivering quality work. What I can help with: • IT & Technical Support • Web, Software & AI Solutions • Scripts, Automation & Integrations • Troubleshooting & Technical Assistance • Virtual Assistance & Project Support • Customer Service & Client Communication • Research, Data & Administrative Tasks 🏆 Top Rated Plus ⭐ 100% Job Success If you’re looking for someone technical, resourceful, easy to communicate with, and committed to getting the job done properly, I’d be glad to work with you.

  • Phone Support
  • Email Support
  • Zendesk
  • Online Chat Support
  • Team Management
  • Customer Service
  • Product Knowledge
  • Email Automation
  • Troubleshooting
  • Administrative Support
  • Technical Support
  • CRM Software
  • Helpdesk

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Don't just take our word for it

What does a software Maintenance specialist do?

A software maintenance specialist keeps accepted software systems operational and responsive after they enter production. This role focuses on corrective, adaptive, and perfective maintenance to address faults, changing environments, and requested improvements. The specialist controls software changes by enforcing coding standards and managing verification activities.

  • Evaluate change requests and plan maintenance work under defined policies. The specialist reviews incoming requests for modifications, assesses their impact on the existing system, and schedules the necessary work. This process ensures that all changes align with established maintenance policies and do not disrupt current operations. By controlling approved code changes, the specialist maintains system stability while implementing necessary updates.
  • Modify source code to correct faults, adapt to new environments, or improve performance. The specialist applies controlled modifications to the software base, ensuring every change undergoes strict audit and review. This work includes fixing bugs reported by users, adjusting the software to run on updated hardware or operating systems, and enhancing features based on user feedback. Each modification follows rigorous coding standards to prevent the introduction of new errors during the repair process.
  • Manage testing activities and maintain comprehensive documentation libraries. The specialist generates test data, runs verification checks, and saves results for future comparison during subsequent maintenance cycles. This role also involves updating technical documentation to reflect the current state of the software, ensuring that archival artifacts remain accurate. By tracking maintenance status and problems through dedicated tools, the specialist provides clear visibility into system health and ongoing repair efforts.

How to hire a software Maintenance specialist on Upwork

Step 1: Post a job

Define the specific maintenance tasks your system needs, such as corrective fixes or adaptive updates for new environments. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft a precise description from a few sentences about your needs. You can write a new post, update a saved draft, or reuse an existing post to start quickly.

  • Specify whether the work involves correcting faults, adapting code to changed environments, or improving performance attributes.
  • List required experience with configuration management tools and documentation libraries to keep systems operational.
  • Include details about change request evaluation processes and coding standards the specialist must enforce.

Step 2: Evaluate candidates

Look for portfolios that show controlled modifications and updated documentation for live software systems. Uma can run instant video interviews and build shortlists with side-by-side comparisons to help you assess technical fit.

  • Check for examples of test data generation and saved results used for future maintenance comparisons.
  • Verify experience with problem reporting and status tracking tools that manage maintenance workflows.
  • Review past work where the specialist restricted approved code changes to maintain system stability.

Step 3: Interview your top choices

Discuss how candidates handle change requests and schedule maintenance work under defined policies. Schedule and conduct interviews within Upwork Messages to receive an immediate transcript and summary after each session.

  • Ask how they verify and validate software changes before deploying them to production environments.
  • Discuss their approach to maintaining documentation libraries alongside code modifications.
  • Clarify their method for retaining test results to support ongoing system responsiveness.

Step 4: Agree on scope and begin work

Set clear milestones for delivering modified software and updated artifacts. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, Hourly Payment Protection, hourly tracking, and project funds for security.

  • Define deliverables such as corrected code, adapted modules, and revised documentation libraries.
  • Establish a schedule for submitting problem reports and maintenance status records.
  • Agree on the process for generating and saving test data for verification purposes.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring a software Maintenance specialist cost?

Hiring a software Maintenance specialist typically costs $500-$1,500 per project for focused updates. Final pricing depends on scope, technical complexity, required integrations, source-material quality, revision needs, and the freelancer's experience level.

Documentation update

$500-$1,200/project

Entry-level to mid-level
  • Review of existing documentation libraries
  • Updated technical guides and archival artifacts
  • Verification of accuracy against current system state

Corrective bug fix

$1,200-$2,500/project

Mid-level
  • Root cause analysis of reported faults
  • Code modification to resolve specific errors
  • Saved verification data confirming the fix

Adaptive environment update

$2,500-$4,500/project

Mid-level to senior-level
  • Evaluation of changing operational environments
  • Adjusted code to maintain system responsiveness
  • Validation that existing features remain stable

Perfective performance improvement

$4,500-$7,000/project

Senior-level
  • Identification of efficiency bottlenecks
  • Refactored code for improved attributes
  • Performance metrics before and after changes

Comprehensive maintenance policy implementation

$7,000-$12,000/project

Expert-level
  • Defined standards for change control and coding
  • Setup of problem reporting and status tracking systems
  • Instructions for ongoing maintenance workflows

Frequently asked questions

Is hiring a software Maintenance specialist worth it?

For most businesses, yes: hiring a software Maintenance specialist is worthwhile. This role keeps production systems operational by fixing faults and adapting code to changing environments. You avoid the disruption of system failures while maintaining clear documentation for future updates.

How do I evaluate software Maintenance specialist candidates?

Look for candidates who describe specific processes for controlling code changes and managing verification testing. A strong candidate explains how they generate test data, save results for comparison, and update documentation libraries after every modification.

What tasks does a software Maintenance specialist perform?

A software Maintenance specialist performs corrective, adaptive, and perfective maintenance on accepted software systems. They review change requests, schedule work under defined policies, and restrict approved code changes to enforce standards.

Which tools do software Maintenance specialists use?

These specialists use configuration management systems, problem reporting tools, and source listing cross-references. They also rely on test data generators and documentation libraries to track maintenance status and archive artifacts.