Salesforce is the world’s most widely used CRM platform. But buying a Salesforce license does not mean your business automatically gets what it needs from the platform. The default setup covers the basics. Everything beyond the basics, custom logic, third party integrations, automated workflows, tailored user interfaces, requires someone who knows how to build inside Salesforce.
That person is a Salesforce developer.
In simple terms, a Salesforce developer is a technical professional who builds, customizes, and extends the Salesforce platform to match how a specific business actually operates. They write code, design data flows, connect Salesforce to other software, and make the platform do things the out-of-the-box version cannot.
The job covers a wide range of technical work. Here is what that looks like in practice:
Writing Custom Code
Salesforce has its own programming language called Apex. It is similar to Java and runs on Salesforce’s servers. When a business needs logic that the standard point-and-click tools cannot handle, a developer writes it in Apex. This might be a custom calculation that runs when a deal closes, a rule that prevents certain records from being deleted, or a process that sends data to an external system at a specific trigger.
Building User Interfaces
Salesforce uses Lightning Web Components for custom front-end development. If a company needs a screen that shows information in a specific way, a custom form with particular validation rules, or a dashboard that pulls data from multiple objects, a developer builds it as a Lightning component.
Connecting Salesforce to Other Systems
Most businesses run multiple software platforms. Salesforce needs to share data with ERPs like SAP or Oracle, marketing tools, billing platforms, support systems, and more. A Salesforce developer writes and maintains the API connections that make this happen. This is often where the most visible business value comes from, because disconnected systems create manual work, duplicate data, and missed information.
Building Automation
Salesforce has native automation tools like Flow and Process Builder. Developers use these for standard automation and write Apex triggers for more complex scenarios. Good automation removes repetitive tasks from sales and support teams. Poorly written automation creates bugs that are difficult to trace.
Managing Data
When a company moves to Salesforce from a legacy CRM, someone has to migrate the data. A developer writes scripts to extract, transform, and load records correctly while preserving relationships between accounts, contacts, opportunities, and cases.
Testing and Deploying Code
Salesforce requires that at least 75 percent of custom code is covered by automated tests before deployment. Writing those tests is part of the developer’s job. So is managing deployments using Salesforce CLI or change sets to move code from a sandbox environment to production without breaking anything.
Not everyone with a “Salesforce developer” title does the same kind of work. The role splits into several categories depending on the level and focus.
Salesforce Administrator
Works without code. Handles user management, page layouts, validation rules, standard reports, and basic automation through Salesforce’s configuration tools. This covers a lot of everyday needs for smaller companies.
Salesforce Developer (Platform Developer)
Writes Apex code and builds Lightning components. Steps in when the administrator’s tools reach their limits. This is who handles API integrations, custom business logic, and anything that requires actual programming.
Salesforce Architect
Designs the overall structure of a Salesforce org or a multi-org setup. Works at a higher level than the developer. Focuses on how systems connect, how data is modeled, and how the platform scales as the business grows. Large enterprises with complex implementations need this role.
Salesforce Consultant
Understands the business process side as much as the technical side. Helps companies figure out what they need before anything gets built. Good consultants have usually worked as developers first, which means their recommendations are grounded in what is actually possible.
Full Stack Salesforce Developer
Handles both front-end Lightning development and back-end Apex work. Also comfortable with integrations and deployment. A generalist who can take a project from requirements to production.
Technical Skills
The core programming knowledge for a Salesforce developer includes:
Apex — the platform’s proprietary backend language. Understanding governor limits (the hard caps Salesforce puts on how much code can run in a single transaction) is essential. A developer who does not account for these limits will write code that works in testing and breaks in production.
SOQL — Salesforce Object Query Language, used to query the database. Similar to SQL but specific to Salesforce’s data model.
Lightning Web Components — JavaScript and HTML-based framework for building Salesforce interfaces.
REST and SOAP APIs — for connecting Salesforce to external systems.
Git — for version control. Any developer who is not tracking code changes with version control is creating risk.
Platform Knowledge
Beyond coding, a Salesforce developer needs to understand how the platform works from the inside. This includes the data model (how standard and custom objects relate to each other), the security model (profiles, permission sets, sharing rules), the automation framework (when to use Flow versus Apex), and the deployment process.
Business Understanding
This is the skill that separates developers who can write code from developers who build things that actually solve problems. A Salesforce developer needs to translate what a sales manager or operations team needs into technical logic. Developers who skip this step build technically correct things that nobody uses.
Salesforce offers official certifications that test a developer’s knowledge of the platform.
Platform Developer I — The baseline certification. Covers Apex fundamentals, data modeling, business logic, and testing. A certified Platform Developer I has demonstrated a working knowledge of Salesforce development.
Platform Developer II — More advanced. Covers complex Apex design patterns, asynchronous programming, large data volumes, and integration patterns. Harder to pass and less common.
JavaScript Developer I — Covers Lightning Web Components and modern JavaScript. Useful for developers focused on front-end work.
Application Architect and System Architect — Higher-level credentials that combine multiple certifications and cover design and integration at scale.
Certifications are a useful starting signal when evaluating a developer but should not be the only factor. Someone with Platform Developer II who cannot explain how they have applied that knowledge in a real project is less useful than someone with Platform Developer I and a track record of clean, tested integrations.
Companies invest in Salesforce development for specific reasons. Here are the most common:
The standard setup does not match how the sales process actually works, so the team avoids using it.
Salesforce and the ERP are running as two separate systems, and someone manually copies data between them every day.
Reports do not show what management needs to see, and building the right report requires data relationships that the standard report builder cannot handle.
The company wants to give customers a self-service portal connected to their Salesforce records.
A key business process, like a custom approval chain or a quote calculator, needs to live inside Salesforce rather than in a spreadsheet sitting next to it.
In each case, the underlying issue is that the platform is not configured and coded to fit the business. A developer changes that.
Advayan has been building on Salesforce for over a decade. The team works across the full range of platform development: custom Apex, Lightning component builds, integrations with SAP and Oracle and marketing platforms, AppExchange solutions, and post-go-live support.
The work starts with understanding what the business actually needs, not just what someone has written in a requirements document. That distinction matters because Salesforce problems are usually business process problems dressed up as technical ones. Building the right thing requires understanding both.
If your current Salesforce setup is not working the way it should, or you are planning a new implementation, Advayan’s team can take a look at what you have and tell you what it would actually take to fix it.