I started coding in 2008. What began as curiosity about how software worked turned into a lifelong habit of taking things apart, figuring out why they run the way they do, and building something better. Over the years that habit grew into a career spanning Android apps, Windows desktop software, and web work for clients and for my own product line, all run out of Birmingham, Alabama, under the name Johnny Haynes SP. Those early days were mostly about questions. Why did one program open instantly while another dragged? Where did the data go when you saved a file? I did not have a grand plan. I had a computer, a lot of patience, and a stubborn need to understand things all the way down. I wrote small programs that did one thing, broke them on purpose to see what would happen, and then fixed them. That cycle of building, breaking, and repairing is still exactly how I work today. Over time, that curiosity led me into the three areas I work in now: Android, Windows desktop, and the web. Each one teaches something different. Android taught me to respect limits, because phones and tablets have smaller screens, tighter memory, batteries that drain, cameras that vary from model to model, and users who are usually doing something else while they tap. Windows desktop development taught me about reliability, because desktop software often runs all day on a work machine and has to behave the same way at the end of a long shift as it did when it first opened. Web work taught me about reach and speed, because a page has to load quickly, look right on any screen, and make sense to someone who has never seen it before. My toolkit has grown with the industry. I build native Android apps, Windows desktop applications, and responsive websites, working across languages and technologies such as Kotlin, Java, C#, Python, JavaScript, HTML, and CSS. Kotlin and Java are my foundation for Android, where I care a lot about clean structure, smooth screens, and making the most of what the device can do. C# is my go-to for Windows desktop software, where stability and a clear, familiar interface matter. Python is the language I reach for when I need to automate something, process data, or prototype an idea quickly. JavaScript, HTML, and CSS are the backbone of my web work, from simple pages that load in a blink to interactive, animated experiences that invite people to explore. I pick tools based on what the project needs, not habit. Sometimes the right answer is a lightweight web page that loads instantly and does one job well. Sometimes it is a full desktop app that has to run reliably all day. Sometimes it is a mobile app that lives in someone's pocket and has to work with one hand on a busy day. Choosing well at the start saves a lot of time, money, and frustration later, and it is one of the most important decisions I help clients make. Beyond the tools themselves, I have backed my hands-on experience with formal credentials, because the fundamentals matter. CompTIA A+ was the starting point. It covers the core of how computers and devices work: hardware components, laptops and mobile devices, printers and peripherals, basic networking, and the installation and configuration of operating systems including Windows, Linux, macOS, Android, and iOS. It also spans software troubleshooting, virtualization and cloud basics, security fundamentals such as malware removal and account protection, and operational procedures like documentation, change management, backups, and safe handling of equipment. For a developer, that breadth is a quiet advantage. When I build an Android app or a Windows program, I am thinking about the storage, memory, hardware, and operating system settings it will meet on the other end, and I can usually tell whether a problem lives in my code, in the device, or somewhere in between. Just as importantly, it teaches a disciplined troubleshooting method: identify the problem, form a theory, test it, plan a fix, verify that it worked, and document what happened. That method shows up in everything I do. When an app misbehaves, I do not guess. I narrow it down step by step until the real cause is clear. CompTIA Network+ built on that by going deep into how devices talk to each other. It covers networking models and protocols, IP addressing and subnetting, routing and switching, wireless standards, network services like DNS and DHCP, cabling and infrastructure, monitoring, and network troubleshooting. It also explores network architecture, from on-site setups to cloud and virtualized environments, along with ports and protocols, segmentation, performance and availability, and the security measures that keep traffic protected. In practice, that means I understand what happens when an app reaches out to a server: name resolution, the connection itself, encryption in transit, and the many points where latency or a firewall rule can get in the way. For a developer, this knowledge is incredibly practical. Apps that sync data, upload files, or sign users in are only as good as their behavior on real networks, including slow ones, crowded ones, and connections that drop at the worst possible moment. Understanding networks helps me build software that handles those situations gracefully instead of failing silently. CompTIA Security+ is where my commitment to building secure software became formal. It covers threats, attacks, and vulnerabilities; security architecture and design; identity and access management; cryptography and how it protects data at rest and in transit; secure network and system configuration; incident response; and risk management, governance, and compliance. Beyond the theory, it emphasizes practical controls such as multifactor authentication, the principle of least privilege, patch management, system hardening, and the steps of responding to an incident from detection through recovery and lessons learned. Those ideas map directly onto development. Least privilege tells me an app should only request what it needs, and understanding common attacks reminds me to validate input, protect credentials, and never trust data simply because it arrived from inside my own software. I bring that mindset into every project. Security is not something I bolt on at the end. It shapes how I handle sign-in, how I store information, what permissions an app asks for, and how I limit who can see or change what. CompTIA CTT+, the Certified Technical Trainer credential, is a little different from the others, and it is one I value a great deal. It focuses on the skills of teaching technical material well: planning and preparing instruction, understanding how adults learn, delivering content clearly, managing a learning environment, engaging people with different backgrounds and learning styles, and evaluating whether the training actually worked. The credential pairs a written exam with a performance-based evaluation of actual instruction, so it measures real delivery rather than just knowledge of teaching theory. That process pushed me to organize ideas in a logical order, check for understanding as I go, adjust when someone is lost, and handle questions without losing the thread. I use the same skills when I write instructions, design onboarding screens, or walk a client through a new tool, because good software and good training share the same goal of making something complex feel approachable. It is a reminder that knowing something and being able to explain it are two separate skills. Software is only useful if people can understand it, and CTT+ sharpened my ability to bridge the gap between technical detail and everyday use.
Alongside the CompTIA certifications, I earned Google's professional certificates in IT Support, Cybersecurity, and Data Analytics. The Google IT Support certificate covers technical support fundamentals, computer networking, operating systems and becoming a power user of them, system administration and IT infrastructure services, and IT security. It works through hands-on topics like the command line in both Windows and Linux, file systems and permissions, package management, directory services, cloud infrastructure, backup and recovery, and the customer service side of support. That background keeps me grounded as a developer. I build with the person who will someday install, update, or troubleshoot my software in mind, which shows up in clearer error messages, sensible default settings, and installers that do not leave people guessing. It is very much grounded in the day-to-day realities of helping people with their technology, from managing users and permissions to diagnosing problems and communicating solutions with patience and clarity. The Google Cybersecurity certificate goes further into the defensive side of security. It covers security frameworks and controls, managing risk, protecting networks, working with Linux and the command line, querying data with SQL, identifying assets, threats, and vulnerabilities, using detection and response tools such as security information and event management systems, and automating security tasks with Python. It also places real emphasis on the analyst's mindset: reading logs, analyzing network traffic, following incident response playbooks, and communicating risks to people who are not security specialists. Writing small Python scripts to parse logs and automate checks was a natural fit for my development background, and the experience reinforced how much good logging and clear audit trails matter when something needs to be investigated later. Working through it strengthened how I think about logging, monitoring, and how to notice when something is not right, which carries over directly into how I design and test my own software. The Google Data Analytics certificate rounds things out on the data side. It teaches a full analytical process: asking the right questions, preparing and cleaning data, processing it, analyzing it, sharing findings clearly, and acting on what the data shows. Along the way it covers spreadsheets, SQL, data visualization, and the R programming language. It stresses data integrity, awareness of bias, and documenting every cleaning step so results can be trusted and repeated, and it teaches how to turn analysis into dashboards and presentations that tell a clear story. In my own work, that thinking influences how I design data entry screens, structure stored information, and build reports, because clean, consistent input at the start makes every later step easier and more reliable. A lot of business software is really about data, whether that is hours logged, expenses tracked, documents scanned, or reports printed. Knowing how to structure, clean, and present that data makes the tools I build more useful to the people making decisions with them. Together, these credentials cover hardware, networking, security, teaching, and data. That foundation shapes how I build: software that is secure by default, works on real-world networks, handles information carefully, and can be explained clearly to the people who use it. The certificates are not the point on their own; what matters is that they make the work better. Client work and my own products feed each other. Alongside projects for businesses, I design and sell my own software. Nexus Scanner is a document scanning app that I created and hold the copyright to. It grew out of a simple belief: capturing a document should be fast, the result should be clean and readable, and the app should stay out of the way. Building and owning a product from start to finish has taught me lessons that client work alone cannot, from deciding what features belong in a product to handling updates, support, and the details of selling software directly. Nexus 9bit is a different kind of project, and a personal favorite. It is a rain-themed wallpaper and screensaver for Windows, Linux, and Mac. It started from a simple idea: a calm rain effect that makes a screen feel alive without being distracting. Making it run smoothly across three different operating systems was a real exercise in patience and attention to detail, since each platform handles graphics, timing, and system integration in its own way. It is also proof that practical software and enjoyable software do not have to be separate things. My own websites are another place where I experiment and push my skills. I build interactive, animated pages that respond to the visitor, with motion and effects that are meant to feel polished rather than flashy. Those sites are where I try new techniques, refine my eye for design, and make sure that performance keeps up with visuals. Every animation has to earn its place by loading quickly, running smoothly, and working well on phones as well as larger screens. What I learn there flows back into client web work. My approach is simple: listen first, build second, and polish until it feels right. Listening comes first because the person asking for software usually knows their problem far better than I do, even if they do not know what the solution should look like. I ask a lot of questions about how work actually gets done, where things go wrong, and what a good day looks like. Only after I understand that do I start building, and I share progress early so the people I am working with can react to something real instead of something imagined. I test on real devices, not just simulators. An emulator is useful, but it cannot tell you how a camera behaves in poor lighting, how an app feels on an older phone, or how a screen reads in direct sunlight. Real-world testing catches the issues that matter most to users, and it is one of the habits I am least willing to compromise on. From there, I iterate fast. Short cycles of building, testing, and adjusting based on honest feedback get a project to the finish line with far fewer surprises than trying to perfect everything in one long push. Details matter to me. I care about the things most people never consciously notice: how a button feels when you tap it, how quickly a screen responds, whether a form remembers what you typed, and how a report reads when it is printed. Those details are what make software trustworthy. People may not be able to explain why one app feels better than another, but they feel it, and they come back to the tools that respect their time. Secure by default is the other half of that philosophy. I would rather build protection in from the start than patch holes later. That means thoughtful sign-in and access control, asking only for the permissions an app truly needs, handling stored information carefully, and keeping software updated as threats change. My security training makes this second nature, but the motivation is simple. When someone trusts me with their business information, I take that trust seriously. Not everything has gone smoothly, and some of the most valuable lessons came from the hard parts. Payment processor changes are a good example. When the services used to sell software change their rules, features, or requirements, it can disrupt how a product is bought and delivered. Working through those changes taught me to build flexibility into how I sell my own products and to plan for the possibility that an outside service will not stay the same forever. Hardware limits have been another steady teacher. Not every user has the newest phone or the fastest computer, and software that only runs well on top-end hardware leaves people behind. I have learned to optimize carefully, to test on modest devices, and to make features degrade gracefully instead of failing outright. That is especially important for graphics-heavy projects like Nexus 9bit and for mobile tools that need to run all day in the field. Real-world device testing has surfaced challenges no specification ever would. Cameras that focus differently, screens with unusual proportions, operating system versions that handle permissions in their own ways, and connections that come and go all shaped the way my apps work today. Each surprise made the final product stronger. Along the way, I have learned a few lessons that I try to carry into every project. Simple is harder than complicated, and almost always worth the effort. The best feature is often the one you leave out. A clear conversation early saves weeks of rework later. Users rarely read instructions, so the software itself has to be the instructions. And no matter how much experience I gain, there is always something new to learn, which is a big part of why I still enjoy this work as much as I did at the beginning. My day-to-day tools and workflows reflect that same practical mindset. I work across Windows 11 and Linux. Moving between the two helps me catch issues that only show up on one system. Teaching and training are a natural part of how I work, and my CTT+ certification reflects how much I value that side of technology. Delivering software is only half the job. The other half is helping people feel confident using it. I enjoy explaining technical ideas in plain language, walking users through new tools, and answering questions without making anyone feel rushed or out of their depth. When I hand off a project, I want the people using it to understand not just which buttons to press, but why the software works the way it does. I also enjoy mentoring people who are learning about technology, whether they are just curious about how computers work or trying to build their own skills. I remember how much I learned by asking questions and experimenting, and I like being able to offer the kind of patient, practical guidance that makes those first steps easier. Teaching also makes me a better developer. Looking ahead, I am focused on growing Johnny Haynes SP into a go-to studio for practical, well-crafted software. I want to build more apps for small and mid-sized businesses, the kinds of companies that need dependable tools tailored to how they actually work but do not have a large technology department of their own. Those businesses are often underserved, and I believe thoughtful, focused software can make a real difference in their daily operations. I also plan to keep expanding my own product line, building on what I have learned from Nexus Scanner and Nexus 9bit. Owning products keeps me close to users, forces me to think about long-term quality, and gives me room to explore ideas that might not come from client requests. I want each product to reflect the same standards I bring to client work: clean design, reliable performance, and respect for the people using it. Ongoing support is a key part of that future. Software is not finished the day it is delivered. Devices change, operating systems update, businesses grow, and needs evolve. I want to offer support plans that keep my clients' tools running smoothly, secure, and up to date over time, so they can rely on their software without worrying about what happens after launch. Building long-term relationships is far more rewarding to me than handing off a project and moving on. The goal is the same as it was in 2008: build things that work, explain them clearly, and keep getting better at it. Every project teaches me something new, and every person I work with adds to how I think about software. I am proud of how far that early curiosity has taken me, and I am even more excited about what comes next.
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