Jake Marx Email & Phone Number

Texas, United States

Sharing my RDBMS design, development, administration, and performance-tuning expertise with clients via Upwork.Examples of a few successful projects: • Refactored MySQL queries and suggesting proper indexing for faster execution time. A query that was taking 15 seconds now executes in under a second. • Performed comprehensive analysis of SQL Server instance setup, database properties, backup and maintenance plans, and performance. Optimized settings; set DBs to SIMPLE recovery (only nightly full backups were needed in this case); shrunk overgrown transaction log files; set up native, encrypted, compressed backups; identified and resolved performance issues that had been causing client complaints. • Completed audit of setup and all processes related to client's SQL Server instances. Set up SSDT Database Projects for better source control integration for their developers.Find me on Upwork and put my expertise and knowledge to work for you! https://www.upwork.com/freelancers/jakemarx

Technology leader with 15 years of progressive, full-stack management experience.As head of engineering for Match Group, I led teams in the creation and maintenance of the dating apps BLK, Chispa, and Upward: • Grew customer base from zero to over 2 million daily users in 6 years. • 100+% YOY revenue growth since inception; current annual revenue is over $70 million. • 25 million app downloads and 1 million app store ratings (average rating 4.5/5 stars). • Drove a 10x decrease in downtime, resulting in 99.99% uptime annually. • Managed teams with 5% annual turnover - less than half of the average in tech.

Dallas, Us

Led a team of 50 engineers responsible for the architecture, design, development, testing, implementation, and maintenance of 35 niche dating websites, iOS apps, and Android apps.• Drove the on-prem to AWS platform migration for 3 dating apps (BLK, Chispa, Upward) in 13 months, partnering with operations, security, product, and analytics to ensure success.• Advocated for a focus on quality that resolved common user complaints, increasing app store ratings from 4 stars to 4.5 stars. Identified an issue that increased Android revenue by 10% when it was resolved.• Identified, coached, and promoted engineers to lead functional areas, creating a matrixed organization that allowed for more 1:1 time and career development for all employees. In an industry known for highturnover and low morale, the team experienced an annual turnover rate of less than 5%.

Dallas, Us

Led a team of 25 engineers focused on product development for dating websites and native apps. The team consisted of front-end, API, database, iOS, Android, and QA engineers. • Architected and drove the creation of a platform to support 3 new swipe-based dating apps. Today, theseapps support over 2 million daily users, 80 million daily swipes, and millions of daily chat messages. • Restructured a monolithic team into 5 full-stack Agile pods, which reduced distractions and increasedoverall productivity. Partnered with product and design to ensure alignment of leads across all pods. • Recognized a gap in stakeholder management – engineering was working mainly on product-driveninitiatives. Worked closely with product, design, marketing, legal, risk, and customer care, ensuring optimaltask prioritization and feature delivery.

Dallas, Us

Chosen as 1 of 6 enterprise architects for a company-wide consolidation effort; joined the Billing and Tools team to lead the implementation of changes needed to support that goal. • Implemented a new payment system for Match.com and LatAm to support all customer transactions,including free trials, new subscriptions, subscription renewals and retries, voids, and refunds across avariety of payment types. • Replaced the database storage of encrypted/hashed user payment account data with server-sidetokenization through a third party to limit PCI scope and risk. • Built a new Job Processor system using SQL Server and .NET Core to run scheduled tasks with extremelyhigh concurrency through horizontal scaling of worker processes. This system has since been adopted by 3other teams, and it executes hundreds of millions of discrete tasks daily.

Dallas, Us

Led a team of 7 database engineers responsible for all aspects of data architecture, design, storage, processing, movement, and reporting across 30 dating websites. • Led architectural discussions with other functional areas when considering new feature requests. • Ensured that data pipelines and ETL processes were built alongside new features to provide data analytics and BI teams with the data necessary for actionable business insights. • Mentored team on performance tuning, design patterns, coding standards, testing, and deploymentconsiderations. • Created thousands of tables, stored procedures, table-valued functions, views (including indexed views), table-valued parameters, and other database objects in Microsoft SQL Server to support several high-concurrency, high-volume OLTP workloads.

Founder and sole developer and administrator for a web/email hosting company. We designed, developed, implemented, and hosted hundreds of websites for our clients for over 10 years.• Responsible for all aspects of design, development, maintenance, and system/network administration related to building and hosting dynamic websites and providing email hosting.• Procured rack space in a data center; designed, purchased, and installed all power and networking systems for full redundancy; designed logos and website templates; configured and deployed firewalls and email servers on FreeBSD; configured and deployed several Windows Server-based web, FTP, and file servers; built websites from the ground up, many with database back ends; provided support for hosting customers; handled all budgeting and invoicing of clients.

Us

Architected, designed, and developed SQL Server databases to support a redesigned USAirways.com website.

Architected, designed, and developed new features for service-oriented dating websites. • Optimized T-SQL code in stored procedures and redesigned some aspects of the database schema to increase performance. • Responsible for all database maintenance, capacity planning, backup/restore scheduling and verification, performance troubleshooting, and day-to-day issue resolution.

Scottsdale, Arizona, Us

• Developed an online provider and payor portal for medical claim discounting in ASP/SQL Server 2000. Added a reporting system using Reporting Services that allowed for payors to view realtime reports and receive daily reports via email. • Maintained and added features to a Visual Basic 6.0 client/server application using SQL Server 2000 on the backend. Developed and enhanced several two-way EDI (Electronic Data Interchange) interfaces between our system and payors' systems.

Us

Converted legacy applications to Visual Basic 6.0 (VB 6.0), integrated Excel workbooks into existing applications, built solutions using Access 2000.

Provided Microsoft Office development, migration, and support to large financial institutions. Built an in-house sales revenue forecasting system with Excel/Access.

Gb

Requested, reconciled, and analyzed employee data for actuarial valuations using FoxPro 2.6 for Windows and Excel. Prepared and administered advanced training sessions for colleagues on the use of Excel and VBA.