Mock Exams • Practice Questions • Vignettes • Interview Assessments
Exam Prep Platforms & Applied Software Engineering Consulting
Tokenizer Inc. is the company behind Mastery Exam Prep and a network of deep-dive educational sites. We build exam-prep platforms (apps, books, and web products) across securities licensing, accounting, finance, and cloud/IT — and we provide architectural review, code quality audits, and consulting for teams working with modern stacks on AWS, Google Cloud, Azure, Databricks, Snowflake, Confluent (Kafka), HashiCorp tooling, and more.
Through endless ages, I’ve journeyed afar,
Upon giants’ shoulders, I reach for the stars.
My sight extends beyond where eyes can see,
Enriched by wisdom freely given to me.
Software Architecture, Cloud & Data Consulting
Beyond exam-prep platforms, Tokenizer Inc. provides hands-on consulting for teams building real systems in production. We combine search and indexing roots (Apache Lucene/Solr), functional programming, and cloud-native design to help you ship robust systems faster.
- Architecture reviews for distributed systems, event-driven designs, and data streams.
- Cloud and data platforms on AWS, Google Cloud, Azure, Databricks, Snowflake, Confluent (Kafka), and HashiCorp tooling.
- Data modeling including time-series and bi-temporal models for trading, risk, and auditability.
- Code quality & refactoring in Java/Kotlin/Scala, C#, Python, Clojure, and TypeScript/JavaScript.
- AI & LLM integration (retrieval, evaluation, safety guardrails) into existing products and workflows.
- Project & delivery consulting across IT and project management, especially content-heavy and exam-like products.
Typical Engagements
- Review a cloud/data architecture and propose a migration or hardening plan.
- Audit a codebase for maintainability, performance, and testability.
- Design a data model with bi-temporal history and regulatory audit trails.
- Review and tune Apache Lucene/Solr schemas and search architecture, including performance tuning and troubleshooting under real-world load.
Engagements can be short expert reviews or longer advisory collaborations.
Tokenizer for Teams — Interview & Upskilling
Make better hiring decisions and upskill at scale with our enterprise assessment platform. Deploy curated exam pools or your private banks. SSO, proctoring, randomization, and audit trails included.
- Role-based assessments across Finance, Accounting, Cybersecurity, IT & Software
- Shared-seats licensing & centralized analytics dashboards
- ATS exports and API hooks
Use cases
- Candidate screening: ranked leaderboards & topic diagnostics
- Employee challenges: quarterly “mock exam” sprints by desk/region
- Continuing development: personalized tracks with certification goals
New · Cloud & IT
AWS Certified Cloud Practitioner (CLF-C02) — Practice Exams book now available
15 full-length CLF-C02 practice exams (975 questions) with teaching-focused explanations, available as PDF and EPUB. A free Lite edition with 3 full exams lets you try the format before you buy.
View CLF-C02 bookOur Websites, Apps & Guides
Tokenizer operates a portfolio of independent exam-prep and educational properties. Start with the flagship Mastery Exam Prep web app, then go deeper with domain-specific sites for securities, accounting, CFA®, project management, software patterns, and finance/economics terminology.
MasteryExamPrep.com
Flagship web app for mock exams and practice banks across multiple certification domains.
SecuritiesExamsMastery.ca
Canadian Securities (CSC®, CPH®, WME®, LLQP, and related CIRO/CSI licensing guides).
SecuritiesExamsMastery.com
U.S. securities — FINRA & NASAA-focused study content and walkthroughs.
AccountingExamsMastery.ca
Canadian accounting exam support, including CFE-focused guides and explanations.
AccountingExamsMastery.com
U.S.-oriented accounting exam hub (in development), complementary to U.S. CPA materials.
CPAExamsMastery.com
U.S. CPA exam strategies, guides, and exam-focused training.
CPAExamsMastery.ca
Canada-specific CPA exam support and long-form explanations.
FinancialAnalystGuide.com
CFA®-oriented site with vignette and essay strategies for aspiring analysts.
PMExams.com
Project management and PMP®-focused guidance and exam strategies.
SoftwarePatternsLexicon.com
Design patterns and software architecture content for 24+ languages and domains.
ClojureForJava.com
A focused guide for Java developers learning Clojure and functional patterns.
AccountingTermsLexicon.com
Plain-language dictionary of accounting terminology for students and professionals.
EconomicsTermsLexicon.com
Key economics concepts and terms explained in exam-ready language.
FinanceDictionaryPro.com
Finance-focused dictionary and concept explainer for analysts, students, and practitioners.
About Tokenizer
Tokenizer Inc. was founded in 2005 by search engineers contributing to Apache Lucene. Our name comes from tokenization in information retrieval (splitting text for indexing). We build tough, human-curated practice questions and explanations, using modern tooling to analyze quality and difficulty — aligned to current exam outlines and regulatory guidance (e.g., CIRO, FINRA/NASAA, AICPA, CFA Institute).
On AI, Tools, and Authorship
We sometimes use AI-assisted tools—including large language models, static analyzers, and internal generators—to explore variants, refactor code, or draft explanations, examples, and diagrams. Final questions, articles, and code samples are always selected, edited, and integrated by human authors, who remain responsible for correctness, nuance, and voice.
AI is treated as a power tool in a larger editorial and engineering workflow: we define the structure, taxonomy, and standards; tools help surface alternatives, edge cases, and gaps; then we keep, rewrite, or discard results as needed. The goal is not to outsource thinking, but to explore more designs, stress-test explanations, and maintain long-term consistency across our exam-prep content and technical guides.
We are independent and not affiliated with, endorsed by, or sponsored by exam issuers. Course names and acronyms (e.g., CSC®, CPH®, WME®, LLQP) are trademarks of their respective owners.