Salesforce Insider: Dexian ITS Salesforce Sr. Developer Assessment: What to Expect and How to Prepare

TL;DR

The Dexian assessment for the Salesforce Sr. Developer role (labeled ITS - Salesforce Sr. Developer) is a 10-question technical evaluation that tests applied knowledge across the core Salesforce development stack: Apex, SOQL, triggers, Lightning Web Components, and the platform data model. Based on Dexian's own published guidance on technical assessments, the test is designed to measure how you think through problems as much as whether you arrive at the correct answer. The 10-question format means each question carries significant weight—there is no room for a few throwaway answers to drag down an otherwise strong performance. The domains most likely tested map directly to the Salesforce platform's programmable layers: server-side logic in Apex, data access via SOQL, event-driven automation through triggers, and modern UI via LWC. Here is what each of those domains actually demands from you in a timed assessment context.

The assessment is labeled "ITS - Salesforce Sr. Developer" and contains 10 questions, making each question high-stakes with no statistical buffer for errors.
Dexian's own technical interview guidance states the evaluation measures problem-solving process, not just correct answers—expect scenario-based questions, not pure recall.
Apex is a near-certain domain: the language is used for web services, complex validation, custom transactional logic, and trigger-attached operations per Salesforce's official documentation.
Bulkification and governor limits are a documented Salesforce best-practice focus—writing Apex that handles multiple records at a time is described as "one of the most important Apex best practices."
Lightning Web Components is the current recommended Salesforce UI model, using standard HTML and JavaScript, and is a likely assessment domain given its role in modern org development.
The Salesforce data model—standard vs. custom objects, field relationships, and SOQL/SOSL query construction—underpins nearly every coding scenario on the platform.
Visualforce knowledge may appear for legacy or migration scenarios even though LWC is the preferred modern framework.

Understand What the 10-Question Format Actually Tests

The Dexian ITS - Salesforce Sr. Developer assessment contains exactly 10 questions, which means the format rewards depth of understanding over breadth of guessing. A thread in r/developersIndia that surfaces at the top of search results for this assessment confirms both the assessment name—ITS - Salesforce Sr. Developer—and the 10-question count. With no stated partial credit and a fixed question ceiling, a single wrong answer represents a 10% score drop. Every question must be treated as individually decisive; there is no statistical cushion that allows a candidate to absorb a few careless errors and still perform well.

Dexian's own blog advises candidates to practice whiteboarding challenges with a friend or mentor, framing the technical interview as an exercise in structured problem decomposition rather than memorized recall. That framing signals that scenario-based or applied questions—where you must reason through a situation and justify a design choice—are more likely than isolated trivia about syntax or API names. Preparing to explain your reasoning is as important as arriving at the correct answer.

Because the assessment is labeled "Sr. Developer," the questions are calibrated for candidates who can make architectural decisions, not just write syntactically correct code. Salesforce's Apex documentation defines senior-level use cases as creating web services, performing complex multi-object validation, building custom transactional logic, and attaching logic to platform operations—all of which require understanding the platform's execution model, not just its syntax. The judgment call of when to use Apex versus a declarative tool such as Flow is itself a senior-level competency that assessments at this tier routinely probe.

Map the Five Technical Domains the Assessment Draws From

Apex is the foundational server-side language on the platform and the domain most likely to generate the largest share of assessment questions, because it is the mechanism behind every custom business process that declarative tools cannot handle. Salesforce's Apex documentation lists its primary use cases as web services, email services, complex multi-object validation, custom transactional logic, and logic attached to record-save operations. A Sr. Developer assessment will probe not just syntax but when Apex is the correct tool versus a Flow or Process Builder—a judgment that requires understanding the platform's execution model at a level beyond what a junior developer is expected to hold.

Triggers and their execution context—before versus after, recursion prevention, and bulk-safe design—form a distinct sub-domain that Salesforce's own documentation treats as a separate mastery area from general Apex. Salesforce's trigger documentation specifies that triggers can be defined for insert, update, delete, merge, upsert, and undelete operations on both standard and custom objects—a breadth of operation types that creates multiple failure modes if a developer does not understand execution order. Separately, Salesforce's bulk Apex documentation describes bulkification as "one of the most important Apex best practices," requiring developers to design classes and triggers that handle multiple records at a time to avoid governor limit violations—a standard that non-bulk trigger code will fail by definition.

Salesforce's LWC documentation describes the model as using modern web standards, with most code written as standard HTML and JavaScript, and the LWC programming model applied only when platform-specific behavior is needed. Lightning Web Components is the current recommended UI development model and a high-probability assessment domain because it represents the skill set Dexian's clients need for active project work. Complementing that, the Lightning Component framework uses JavaScript on the client side and Apex on the server side to build single-page applications optimized for speed on both mobile and desktop—meaning LWC questions on an assessment will often require you to reason about the client-server boundary, not just component markup.

The Salesforce data model—how standard and custom objects relate, how SOQL queries traverse those relationships, and when to use SOSL—is the substrate beneath every coding question on the platform. Salesforce stores all data in relational tables called objects; standard objects are provided by the platform while custom objects are developer-created, and understanding the distinction is prerequisite to writing correct SOQL. Assessment coding scenarios almost always require correct use of object relationships and query design tradeoffs, making data model knowledge a force multiplier on every other domain—a candidate who is weak on object relationships will struggle with Apex, trigger, and LWC questions simultaneously.

Visualforce remains a testable domain for Sr. Developer assessments because legacy orgs still run Visualforce pages and migration scenarios require developers who can reason about both the old and new UI frameworks simultaneously. Visualforce is a tag-based markup framework similar to HTML where each tag corresponds to a UI component, and it is still natively hosted on the Lightning Platform. A Sr. Developer is expected to evaluate tradeoffs between Visualforce and LWC for a given use case—not simply know that LWC is newer—and an assessment question may present a legacy Visualforce scenario and ask you to identify the appropriate migration path or the limitations that make Visualforce unsuitable for a new requirement.

Recognize Where Governor Limits and Bulkification Will Trip You Up

Governor limits are the Salesforce platform's enforcement mechanism for multi-tenant resource fairness, and writing code that ignores them is the most reliable way to fail a Sr. Developer assessment even when the logic is otherwise correct. Salesforce's bulk Apex documentation states that bulkification—designing classes and triggers to handle multiple records at a time—is one of the most important Apex best practices, which means non-bulk code is a disqualifying error at the senior level, not a minor style issue. The most common violations—SOQL queries inside loops, DML statements inside loops, and exceeding per-transaction limits—are patterns that appear in assessment scenarios precisely because they represent real production failures that senior developers are hired to prevent.

Trigger recursion—where a trigger fires, modifies a record, and fires again in an uncontrolled loop—is a scenario-based problem that appears frequently in Sr. Developer assessments because it requires both pattern recognition and a specific architectural solution. Because triggers execute on insert, update, delete, merge, upsert, and undelete operations, any trigger that performs DML on the same object type can re-invoke itself without a recursion guard. The standard solution—a static Boolean flag in a handler class—is a pattern that assessments test by presenting broken trigger code and asking candidates to identify and fix the recursion risk. Knowing the pattern is not sufficient; you must be able to read code that lacks it, diagnose the failure mode, and articulate the corrected design.

Account for What Public Sources Do Not Tell You About This Specific Assessment

No public source currently documents the pass threshold, time limit, or question format (multiple choice versus code-writing) for the Dexian ITS - Salesforce Sr. Developer assessment, which means preparation strategy must be calibrated for the hardest plausible version of the test. The only public mention of this specific assessment is a Reddit post in r/developersIndia that confirms the name and 10-question count but contains no information about format, time constraints, or scoring methodology.

The practical consequence of this information gap is that you should prepare as though the assessment includes code-writing or scenario-analysis questions rather than pure multiple choice, because Dexian's own guidance recommends practicing whiteboarding challenges and explicitly frames the technical interview as a measure of how you think—language that is inconsistent with a format designed around selecting from pre-written answer options. Preparing for applied problem-solving covers both possibilities: a candidate who can write and explain correct Apex will also perform well on multiple-choice questions about Apex, but the reverse is not true.

How to Allocate Your Preparation Time Across the Five Domains

Apex fundamentals and use-case judgment (30% of prep time). Review when Apex is the correct tool versus declarative automation. Be able to write and read Apex classes, methods, and basic DML without reference material. Focus on the use cases listed in Salesforce's official Apex introduction—web services, complex validation, custom transactional logic—because these are the scenarios most likely to appear in applied questions.
Triggers, bulkification, and governor limits (30% of prep time). This is the domain where mid-career developers most often lose points on Sr. Developer assessments. Practice rewriting non-bulk trigger code into bulk-safe patterns. Memorize the most common per-transaction governor limits. Be able to identify a SOQL-in-loop or DML-in-loop violation on sight and produce the corrected version. Practice the static Boolean recursion guard pattern until you can write it from memory.
Lightning Web Components and the client-server boundary (20% of prep time). Review how LWC components are structured, how they call Apex methods, and how data flows between the client and server. Understand the difference between the Aura component model and LWC at a conceptual level, since assessment questions may test whether you know which model applies to a given scenario.
Data model, SOQL, and SOSL (15% of prep time). Review standard object relationships (lookup vs. master-detail), how to write relationship queries in SOQL, and when SOSL is more appropriate than SOQL. Every coding scenario on the platform requires correct query construction, so gaps here will compound errors in other domains.
Visualforce for legacy and migration scenarios (5% of prep time). You do not need deep Visualforce expertise, but you should be able to describe what Visualforce is, how it differs from LWC architecturally, and under what conditions a team would choose to maintain a Visualforce page rather than migrate it. This is a judgment question, not a syntax question.

Frequently Asked Questions

What is the Dexian ITS - Salesforce Sr. Developer assessment?

It is a 10-question technical evaluation administered by Dexian as part of the hiring process for senior Salesforce Developer roles. The assessment is labeled "ITS - Salesforce Sr. Developer" and is designed to test applied knowledge across the core Salesforce development stack, including Apex, triggers, SOQL, Lightning Web Components, and the platform data model. The 10-question count has been confirmed in a public Reddit thread in r/developersIndia, though pass thresholds and time limits are not publicly documented.

How many questions are on the Dexian Salesforce Developer assessment?

The assessment contains 10 questions. Because there is no large question pool to absorb errors, each question carries approximately 10% of the total score. Candidates should treat every question as individually decisive rather than relying on overall volume to compensate for individual mistakes.

What Salesforce topics does the Dexian assessment cover?

Based on the Salesforce platform's programmable layers and the Sr. Developer designation, the most likely domains are: Apex (server-side logic, use-case judgment, and class design), triggers (before/after context, bulkification, and recursion prevention), governor limits (SOQL-in-loop and DML-in-loop violations), Lightning Web Components (component structure and Apex integration), the Salesforce data model (standard vs. custom objects, SOQL, and SOSL), and Visualforce (legacy and migration scenarios). These domains are grounded in Salesforce's official developer documentation.

Is the Dexian assessment multiple choice or does it require writing code?

No public source documents the question format for this specific assessment. Dexian's own blog guidance frames technical evaluations as measuring how candidates think and recommends practicing whiteboarding challenges—language more consistent with applied or scenario-based questions than pure multiple choice. The safest preparation posture is to prepare for code-writing and scenario-analysis questions, which will also cover multiple-choice formats by default.

What is bulkification and why does it matter for the Dexian Salesforce assessment?

Bulkification is the practice of designing Apex classes and triggers to handle multiple records at a time rather than processing records one by one. Salesforce's official documentation describes it as one of the most important Apex best practices because the platform enforces governor limits—per-transaction caps on SOQL queries, DML statements, and other resources—that non-bulk code will routinely exceed in production. For a Sr. Developer assessment, writing non-bulk code is a disqualifying error even if the underlying logic is otherwise correct, because it demonstrates a failure to understand the platform's multi-tenant execution model.

Do I need to know Visualforce for the Dexian Salesforce Sr. Developer assessment?

Visualforce knowledge is a lower-priority domain but should not be ignored entirely. Legacy orgs still run Visualforce pages, and Sr. Developer roles often involve evaluating migration paths from Visualforce to Lightning Web Components. The assessment is more likely to test your ability to reason about Visualforce tradeoffs—when to maintain it versus migrate it, and how it differs architecturally from LWC—than to test deep Visualforce syntax. Allocating roughly 5% of preparation time to Visualforce concepts is a reasonable posture.

What is the pass threshold for the Dexian Salesforce assessment?

The pass threshold for the Dexian ITS - Salesforce Sr. Developer assessment is not publicly documented. No public source provides information about scoring thresholds or how results are evaluated. Given the 10-question format and the absence of a known buffer, preparing to answer every question correctly is the only rational strategy.

Thursday, May 28, 2026

Dexian ITS Salesforce Sr. Developer Assessment: What to Expect and How to Prepare