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Construction
Data Management Platform
UI/UX DesignWeb & Mobile Development+3
SOFTWARE DEVELOPMENT
We build custom software that .
Custom web applications, enterprise software, API development, and system integration tailored to your business. Built by senior engineers in Tampa, FL.
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Development Lifecycle
Built Right, Shipped On Time
Every project follows our proven process: validated requirements, iterative design, agile development, and rigorous quality assurance.
DiscoveryRequirements / Research / Strategy
DesignWireframes / UI/UX / Prototypes
ArchitectureTech Stack / Database / APIs
DevelopmentAgile Sprints / Code Reviews
QA & TestingUnit / Integration / E2E
Launch & ScaleDeploy / Monitor / Iterate
Who is it for?
Full-cycle software development for every type of business
No matter the size of your company, we provide top-notch solutions for custom software development. Let us assist you in unleashing the full potential of technology for your business needs.
Startups
We specialize in helping startups turn their ideas into sustainable businesses. Working closely with founders, we strive to understand their vision and align it with industry trends and target audiences. Our discovery phase ensures timely market entry without compromising on quality.
01Small & medium businesses
Stay ahead of the competition and enhance customer experience with our custom software solutions. Our team will develop software that reflects your brand's identity, engages users, fosters loyalty, and drives conversions.
02Enterprises
Transform your operations and boost productivity with our tailored software solutions. Collaborating closely with your organization, we identify your unique requirements and develop secure and efficient custom software that streamlines your operations.
03WHAT WE DO
Design Key's software development services
- 01
Web Application Development
We build dynamic and interactive web applications that meet your unique goals and engage users.
- 02
Mobile Application Development
We develop innovative mobile apps that enhance user engagement and accessibility across various platforms.
- 03
MVP Development
We can help test your product ideas through Discovery, Prototyping, and MVP to validate concepts and gather user feedback for iterative improvements.
- 04
Frontend Development
We design and build engaging and user-friendly interfaces for seamless user experiences.
- 05
Backend and Cloud Development
Our team excels in building robust and scalable infrastructure to support efficient data management and application performance.
- 06
Software Architecture Design
Our architects design efficient and scalable software architectures that ensure long-term reliability and maintainability for any platform.
- 07
Redesign of Websites and Platforms
We can revitalize existing websites and platforms with modern design and enhanced functionalities to help you drive better business results.
- 08
Custom API Development
Our team is proficient in creating tailored APIs that enable seamless integration with third-party systems, unlocking new possibilities for businesses.
Our Process
From discovery to a shipped product
Our proven custom software development process with clear milestones and deliverables.
Typical engagement: 10-14 weeks to first launch
AI-assisted engineering, human-led quality - we ship faster without cutting corners.
Typical engagement: 10-14 weeks to first launch
AI-assisted engineering, human-led quality - we ship faster without cutting corners.
Project Kickoff
Phase 1 of 5
1 weekWe dig into your business goals, current systems, and constraints, then lock scope, milestones, and a communication rhythm. You know exactly who is building what before any code is planned.
Deliverables
Signed ContractTechnical Discovery BriefTeam IntroductionProject Board SetupDiscovery & Design
Phase 2 of 5
2-3 weeksWe map your domain and workflows, design the data model and system architecture, and wireframe the core screens. Structure gets validated on paper where changes are cheap.
Deliverables
Domain & Workflow MapsSystem Architecture PlanWireframesUI Design SystemPrototype & Testing
Phase 3 of 5
1-2 weeksA clickable prototype of the riskiest workflows goes in front of the people who will actually use the software. Their feedback reshapes the plan before development starts.
Deliverables
Clickable PrototypeUser Testing SessionsFindings ReportRevised SpecificationsDevelopment
Phase 4 of 5
5-7 weeksAI-assisted engineers build the product in two-week sprints with demos at every milestone. You watch features land in a staging environment instead of waiting for a big reveal.
Deliverables
Sprint DemosStaging EnvironmentBackend API & DatabaseAutomated Test SuiteLaunch & Growth
Phase 5 of 5
2+ weeksWe deploy to production, monitor stability, train your team, and hand over documentation. A support plan keeps the product improving after launch day.
Deliverables
Production DeploymentMonitoring SetupTeam TrainingSupport Plan
TECHNOLOGY STACK
Technologies that power your software
We use best-in-class technologies trusted by leading product teams worldwide to build fast, scalable, and maintainable software solutions.
React
Next.js
Angular
TypeScript
Node.js
NestJS
PostgreSQL
MongoDB
AWS
AzureDocker
Figma
Stripe
GraphQL
Redis
WHY US
Why choose Design Key?
We know that off-the-shelf solutions may not effectively address your unique business needs. Therefore, we provide custom software development that fits your exact requirements.
Customized Solutions
Your business is unique, and so should be your software. We collaborate with you to understand your needs, goals, and challenges to deliver software solutions that align with your vision.
Expert Team
Our team of seasoned developers, project managers, designers and QA engineers have years of experience across various industries. They are committed to delivering quality and innovation every step of the way.
Timely Delivery
We value your time and work in sprints to make our work productive and easy to track. Our agile development processes ensure that your software is delivered on schedule without compromising on quality.
Seamless User Experience
Our UI/UX designers collaborate closely with developers and QA engineers to design attractive, intuitive interfaces that boost user engagement, LTV and other metrics.
After-Launch Support
Our relationship doesn't end at the launch. We provide ongoing support and maintenance to ensure your software continues to deliver optimal performance.
Transparent Communication
Dedicated managers keep our clients consistently informed about the project status and provide a clear view of every tech decision and its results.
WHAT OUR CLIENTS SAY
Real results from real clients
0+Projects Delivered
0%Client Satisfaction
0+Team Members
0+Years Experience
"Daniel and his team have worked on several infrastructure development projects for me. They are excellent experts with exceptional client service and communication skills. Able to dig through complex project requirements and produce an end product that exceeds expectations."
Lori Barao
Manager of Operations, MMI Direct
Case studies
Real projects we've shipped
Recent projects we built for clients - each one shipped, in production, and serving real users.
FAQ
Questions? Answers.
Common questions about our custom software development services.
Ready to get started?
Ready to build your custom software?
Schedule a 30-minute intro call with Daniel Killyevo, Founder and Technical Lead at Design Key. We'll discuss your project requirements and how to turn your vision into a high-performing product.
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