What does a Software Developer do?

In today’s fast-moving tech landscape, software developers shape much of the world we interact with. Developers design and build the applications and systems that keep our daily lives running.

Do software developers do a lot of coding? Yes. Writing code is at the core of this role, but it’s only part of their work. Developers also analyze requirements, design solutions, test and refine their work, and collaborate closely with teams to bring ideas to life.

In this blog, we explore what a software developer is, the skills to consider learning, and how IBMers in this field are pushing the boundaries to redefine what’s possible.

If you’re interested in exploring a career as a developer at IBM:

• Click here for developer roles around the world on the IBM Careers website.
• Join our Talent Network to learn about the latest job openings, upcoming events,
  and learning opportunities.

From simple tasks like paying for groceries to complex breakthroughs in artificial intelligence and cloud computing, developers’ work ranges from the routine to the revolutionary, shaping how industries operate and how we experience technology.

“Behind every line of code is a mix of creativity, problem-solving, and collaboration with teams across the globe — and that’s what makes the work so exciting and impactful,” said Prasan, who joined IBM as a new graduate in India. Now, he’s a Cloud Full Stack Developer from India who develops cloud products that keep user accessibility at the forefront.

→ Read more at Entry Level Developer: The Secrets to Becoming a Successful Candidate.

The work goes far beyond writing lines of code. Oftentimes, it’s understanding the client’s challenges, designing solutions, and experimenting with new technologies to make processes work efficiently.

Developers also spend time reviewing code with peers and troubleshooting issues when systems don’t behave as expected. They might build prototypes, explore new programming languages, or fine-tune performance.

It’s a mix of heads-down programming and big-picture problem-solving, often in close collaboration with designers, engineers, and business teams. As a Developer Manager, Yinka and his team are doing just that!

“I was entrusted as the chief performance owner of running z/OS for developers on IBM Cloud,” said the U.S.-based IBMer. “This was a massive project that involved collaboration across multiple lines of business. I worked with incredible engineers and business leaders across the globe from IBM Infrastructure, IBM Cloud and IBM Research.”

Not all developers follow the same path. Some specialize in the front end, creating the interfaces that users see and interact with. Others focus on the back end, where systems, servers, and databases run behind the scenes. Many take on both as full-stack developers, while some may have specialized developer roles centered around a programming language, software, or product.

Here’s a closer look at types of developers:

• Front-end developers focus on designing and implementing the user interface (UI). Front-end developers create responsive layouts and work to make user experiences smooth and intuitive.
• Back-end developers handle server-side logic, manage databases, and ensure that applications run reliably and efficiently. Their work supports the functionality that happens behind the scenes, enabling seamless integration across systems.
• Full-stack developers combine front-end and back-end expertise. They bridge the gap between what users see and how systems operate, offering end-to-end solutions that span the entire technology stack.
• Mobile developers focus on applications for smartphones and tablets, optimizing performance and functionality for different devices and operating systems. They bring mobile-first experiences to life.
• Desktop developers are behind the software that runs on desktop operating systems.
• Cloud developers design, build, and manage applications and services for cloud-based platforms
• Enterprise applications developers work on custom software solutions that support business operations.
• DevOps engineers are skilled in IT development and operations, streamlining deployment processes, optimizing environments, and even supporting database migrations.

Developer roles also may lie at the intersection of various specialties. Angel is a development lead of Coupling Firmware for IBM Z systems. His role lives at the intersection of software and hardware development.

“We either buy pieces of hardware from vendors or an IBM group makes hardware for us. Then, it’s up to our team to make that work for our IBM Z operating systems,” said Angel, who explains he’s even gone to IBM Poughkeepsie’s test floor to get to know the product. 

While specializations may vary, developers often collaborate across roles to create cohesive solutions. At IBM, this flexibility allows developers to explore different areas, gain new skills, and contribute to a wide range of impactful projects.

→ Read more about Diana’s most impactful project: developing an app that automatically detects car crashes.

Becoming a software developer is a journey that combines curiosity, problem-solving, and continuous learning. Whether you’re just starting out or looking to level up your skills, there are a few key areas to focus on:

Soft Skills

Technical knowledge is essential, but soft skills may help developers truly shine. Communication, collaboration, adaptability, and critical thinking help you work in teams, understand client needs, and solve problems creatively. Being able to break down complex challenges and explain solutions clearly is just as important as writing clean code. Many developers discover these skills through hands-on experience and responsibility. For example, Chandana, an IBM Z mainframe software developer in India, stepped in to help manage her team’s work when her lead had to step away. She tracked project progress, ensured deadlines were met, and coordinated tasks alongside her daily development work.

“It was a big challenge, but it helped me grow a lot. I developed leadership, communication, and project management skills. That experience gave me a lot more confidence in myself,” she said.

Hard Skills

Hard skills form the backbone of your development expertise. These include proficiency in programming languages (such as Python, Java, or JavaScript), understanding data structures and algorithms, working with databases, and using version control systems like Git. Familiarity with cloud platforms, AI tools, or mobile development frameworks can also give you an edge in today’s tech landscape.

On the technical side, Chandana also shared her experience working with IBM’s Cloud Data Access team. Starting as testers and quickly evolving into developers, she and the team had the chance to build and improve products that help clients manage data seamlessly across hybrid cloud environments.

“Our work helps clients manage data seamlessly across different cloud environments, which is critical for businesses having hybrid cloud architectures,” she said.

It’s work Chandana describes as rewarding.

“What makes me proud to be an IBMer? It’s working on technology that powers the world’s most critical industries. Since starting as an intern writing test cases and verifying functionality, I’ve been trusted with more responsibility. Now, I own an initiative and work on end-to-end design, initiative documents, development, and testing. I’m proud of how much I’ve grown technically,” she said.

→ Read how one IBMer turned her internship into a Software Developer Career.

Learning Resources

Continuous learning is a core part of being a software developer. IBM offers a variety of courses and resources for aspiring developers. You can explore topics like coding, application development, and cloud computing through

• IBM SkillsBuild provides free courses to help you build real-world skills. Find a variety of courses, including for developers.
• Browse through IBM Developer’s library of courses. Learn how to build a generative AI application with Python; use PyTorch to build, train, and evaluate neural networks. The list is extensive for what you could learn!
• Try out developer tools in the “Explore” module. Play with IBM Granite.Code, Watsonx Developer Hub, and more.

Think of a programming language as a set of rules (syntax) that allows humans to communicate with computers. It’s used to create software programs, websites, and other applications. Programming languages are the foundation for solving real problems, making processes smoother, more efficient, and scalable.

Here’s a list of programming languages to consider for software developers to stay competitive and build high-impact digital solutions.

• Python is often the first language many developers learn. Its simplicity and readability make it easy to pick up, while its versatility allows it to be used in web development, data analysis, artificial intelligence, and scientific computing. Python’s extensive libraries and supportive community make it ideal for both beginners and more experienced developers. Check out IBM’s Python roles.
• Java remains a staple in enterprise environments. Its portability and robustness make it suitable for building large-scale systems and Android applications. Many developers choose Java for its reliability and the fact that it can run across multiple platforms with minimal changes. Check out IBM’s Java roles.
• JavaScript powers the web. It is essential for front-end development, enabling interactive and dynamic user experiences. With modern frameworks like React and Angular, JavaScript has grown beyond web pages and now supports full-stack development through technologies such as Node.js. Check out IBM’s JavaScript roles.
• C++ is widely used for system-level programming, game development, and applications that require high performance. It gives developers precise control over memory and system resources, making it an essential language for performance-intensive projects. Check out IBM’s C++ roles.

Other languages that are increasingly relevant include Go (Golang), known for building scalable cloud applications, Rust, which prioritizes memory safety and performance, and Swift, designed for iOS and macOS development with a focus on modern, efficient code.

Malisha, a New York City developer, says she’s been able to build generative AI tools from the ground up. One project she is especially proud of is a COBOL Code Explain tool.

“Many companies still rely on millions of lines of legacy COBOL code, which few developers understand,” said Malisha. While COBOL may be considered a dead language for some, plenty of companies and agencies are still running on COBOL.

“Our tool uses generative AI to analyze and document code, extract user stories, and support modernization efforts. It’s already been used in multiple client demos,” she said.

Mastering programming languages is about more than just syntax. It’s about solving problems, building solutions, and understanding how different tools fit together. So as Malisha found a way to incorporate gen-AI into her project, she said she learned foundational gen AI skills along the way, like prompt engineering, working with context windows, chunking strategies, and model adaptability – all of which she applied to other tools.

“It was a real reminder that helping large enterprises modernize isn’t just a technical challenge; it’s a step toward unlocking innovation across industries,” she said.

IBM nurtures a culture where trust and continuous learning allow employees to grow while tackling meaningful challenges. Developers are given the freedom to take ownership of projects, experiment with new technologies, and learn from their peers across teams and geographies.

Mentorship, teamwork, and open collaboration are at the heart of this culture, encouraging developers to continuously push their skills and innovate.

“Despite working on mainframes, we use modern tools and follow current industry trends. The work is exciting, constantly evolving, and aligned with what’s happening across the tech industry,” said Chandana.

IBMers tackle complex problems together, share insights, and support each other’s learning journeys, something Dinesh says he’s been able to experience for himself.

“The leadership and trust placed in me encouraged me to explore beyond my comfort zone, enhancing both my technical skills and confidence,” said the India-based IBMer, who is on the Cloud Pak for Data team.

IBM’s culture of empowerment and collaboration helps developers build confidence, make an impact, and explore new possibilities in technology, ultimately shaping not just their careers but the solutions they deliver to clients worldwide. IBM’s environment fosters not only professional growth but also personal achievement, creating a supportive and dynamic workplace where employees can thrive.

“What drives me isn’t just writing code, it’s creating solutions that last, and helping others grow through it,” said Nikko, an application developer in the Philippines who supports clients in Japan. “I’m not just solving technical problems; I’m helping real people work smarter and more confidently.”