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Sami Nasim

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Last update: 14.06.2023

Senior BlockChain Developer, MERN Stack Developer

Graduation: Bachelor of Science - BS, Computer Science
Hourly-/Daily rates: show
Languages: English (Full Professional)

Keywords

Blockchain Innovation Organization Development Mern

Attachments

sami-nasim.pdf

Skills

I'm Sami, an experienced Blockchain Developer. With expertise in Smart Contract development, multiple blockchain platforms, and a passion for innovation, I'm ready to deliver high-quality solutions. Let's unlock the full potential of blockchain technology together!

Project history

01/2016 - 01/2017
Senior BlockChain Developer
Remotebase

Responsibilities:

* I have been employed as a Senior BlockChain Developer at Remotebase, where I have honed my
skills in developing and implementing BlockChain-based solutions. As a senior member of the
development team, I have taken on a leadership role, guiding and mentoring junior developers
and ensuring projects are completed to a high standard. In addition, I have been responsible for
troubleshooting complex technical issues, utilizing my extensive knowledge of BlockChain
technologies to resolve them quickly and effectively.
* I have a strong understanding of the various BlockChain platforms, such as Ethereum, Hyper
ledger, and EOS, and I have experience working with smart contract development, decentralized
application (DApp) development, and BlockChain security. I have also been actively involved in
research and development, staying up-to-date with the latest advancements in BlockChain
technology and providing clients with insights on how they can utilize these technologies to
improve their businesses.
* Involved in project meeting and identify testing scope
* Provided test estimates based on the requirement
* Developed ETL jobs for various lines of businesses based on Business Requirement Document
(BRD) ETL mapping document and covered the linkages and relationships between various
source systems
* Successfully consulted approx. 6 -8 BlockChain companies of varying sizes.
* Each of them came to use with their own unique end goal (e.g. decentralized distributed file
storage, decentralized oracles, niche targeted consensus mechanism) where we were able to
provide them with fully fledged out technical specifications white papers, and if needed the
code.
* Conceived and setup Visa Cloud Working Group. Led it from its inception. Setup the Vision,
Mission and Strategy and Multi- Generational Cloud Plan. The strategy was built on a foundation
of CapEx, OpEx and ROI optimization and in strategic alignment with Payment Card Industry in
general and VISA strategy in particular.
* Led the initiatives to migrate financial services industry applications to Amazon AWS cloud.




* Innovated Visa RAMP, a Cloud Security Program/Solution for highly secure cloud hosting and
migration.
* Designed test data using MS Excel sheet. created a data driven test for testing the application
with positive and negative inputs.
* Generating and writing clear and concise defect reports, verifying bug fixes.
Performed various data analysis at the source level and determined the key attributes for
designing of Fact and Dimension tables using star schema for successful creation of Data
Warehouse and Data Marts
* Involved in reading the log files to identify issues/errors in scripts for ETL process
* Involved in validating the SSRS reports

01/2014 - 01/2016
MERN Stack Developer
Fabulous Technology Solutions

Responsibilities:

* My experience at Fabulous Tech sounds extensive. Working as a BlockChain and MERN
developer at the company demonstrates my technical expertise and commitment to the field.
The combination of BlockChain and MERN technologies shows a strong understanding of both
the decentralized nature of BlockChain and the modern web development stack, which is in high
demand in today's job market. My experience at Fabulous Tech has likely provided me a
valuable opportunity to work on challenging projects, collaborate with colleagues, and build a
portfolio of successful projects that showcases my skills and abilities.
* Team of Fabulous Tech also likely have a wealth in the tech industry, and I've likely had the
opportunity to collaborate with them on various projects. This has given me the opportunity to
learn from my colleagues, exchange ideas, and build relationships that will be valuable in your
future endeavors. Involved in project meeting and identify testing scope
* Provided test estimates based on the requirement
* Prepared Test strategy and Test plan based on the requirements
* Developed ETL jobs based on Business Requirement Document (BRD), ETL mapping document
and covered the linkages and relationships between various source systems
* Supported the extraction, transformation and load process (ETL) for a Data Warehouse from flat
files using Informatics and provide technical support
* I would provide the end user with historical, and granular calculated data categorized by service
provider across multiple chains to allow the user to have all the information they needed to
make an educated decision.
* First steps primarily included the analysis over the data that was permanently stored within the
BlockChain to conclude on what would be the optimal metrics to measure in this context, and
more importantly standardization of the algorithms for these metrics across the different
consensus implementations/ BlockChain structure.
* Given the latency of the nodes we needed highly available data querying layer, this required
indexers for these chains to be built out that would be in charge of fetching the chain data,
parsing the data into its needed format, and loading it into a highly available multi regional




PostgreSQL. with the addition of a minor micro services to handle the cross chain metrics that
would update based on a time frame we deemed optimal for user accounts we utilized a JWT
assisted ACL over GraphQL with a separate auth server micro service, and implemented
hardware wallet support.
* The hardware wallets implemented the U2f, and weblogs' protocols commonly used for 2fa that
brought the capabilities of allowing authentication via the devices alone, and more importantly
capturing that additional segment of the digital labor market we were targeting by allowing the
stake delegation process to happen directly through our site. For the front-end framework, we
used Vue.js, which was deployed in a server less deployment.
* Designed test data using MS Excel sheet, created data driven test for testing the application with
positive and negative inputs.
* Generating and writing clear and concise defect reports, verifying bug fixes.
* Performed various data analysis at the source level and determined the key attributes for
designing of Fact and Dimension tables using star schema for successful creation of Data
Warehouse and Data Marts
Involved in reading the lo8 Tiles to identify issue/errors in Scrips Tor Ell process
* Writing the SQL queries to validate the Aggregate data in both Teradata and Hive databases
* Validated web-based applications/reports
* Performed data validating in BO reports
* Given walk through on test result documents to application support team before deploying the
project in production

Local Availability

Only available for remote work
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