Sulejman S.

Sulejman S.

Blockchain Engineer

Sarajevo, Bosnia and Herzegovina
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About Me

Sulejman is a professional Blockchain Developer with 10 years of development experience working with various programming languages and technologies and practical experience in Blockchain development in the fintech, healthcare, and eCommerce domains. He is skilled in app architecture, Node.js, Ethereum, Solidity, and TypeScript and has highly developed research and analytical skills with a strong capacity to conduct independent research. Sulejman specializes in Blockchain technology, focusing on Solidity Smart Contracts, decentralized finance applications, and system architecture, and his technical expertise includes developing advanced on-chain logic, implementing zero-knowledge proofs, and engineering solutions for Blockchain-based platforms. He has also created and managed several tech and Blockchain meetup groups in Sarajevo and Istanbul and has organized workshops on Smart Contracts development.

Work history

UpStack
UpStack
Blockchain Developer
2020 - Present (4 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Zolar
Zolar
Software Engineer
2023 - 2023
Remote

Collaborated with an external team to expand their platform offering solar panels and related services to the German market, including an additional "buy now, pay later" payment option.

HealthEx
HealthEx
Software Engineer
2022 - 2023 (1 year)
Remote
  • Worked on developing a HealthEx DAO to manage access levels for medical data used in research and implemented transparent on-chain logic for record-keeping purposes.

  • Created a customized trustless on-chain invitation system for Gnosis Safe at an organizational level.

  • Researched wallets, account providers, and account abstraction and established back-end data pipelines for indexing on-chain data.

Alloy
Alloy
Software Engineer
2022 - 2022
Remote
  • Designed and implemented back-end services for a DeFi application, interfaced with external custodian systems using their APIs, synced Blockchain data to the company system, and developed the transaction logic.

  • Designed and implemented systems for various on-chain DeFi investment strategies through a custodian.

  • Integrated Web3 native wallets such as MetaMask and WalletConnect in the platform.

SolidityNode.jsNestJS Next.jsReact PostgreSQLAWSDockerRabbitMQRedisKubernetesWeb3 GraphqlDecentralized Finance (DeFi) BlockchainMetamaskWalletConnect
Panther Protocol
Panther Protocol
Software Developer
2021 - 2022 (1 year)
Remote
  • Developed highly anonymous DAO launch software to facilitate the establishment of PantherDAO.

  • Actively participated in core protocol development.

  • Gained significant experience in Zero-Knowledge Proof (ZKP) and crypto-related implementations within a Panther Protocol web client.

Ministry of Programming
Ministry of Programming
Blockchain Developer
2020 - 2021 (1 year)
Sarajevo, Bosnia and Herzegovina
  • Worked on developing software solutions for startups in fintech, healthcare, and eCommerce.

  • Managed initial client evaluation and analysis necessary for starting the research process in building applications.

  • Defined Blockchain development structure and closely collaborated with team members from other departments to create and test new software applications.

Altcoin.io
Altcoin.io
Software Engineer & Researcher
2017 - 2019 (2 years)
Remote
  • Worked on back-end (databases and services), research, and other tasks related to tackling challenges of building decentralized exchange.

  • Highly involved in writing and deploying Smart Contracts and issued information regarding cryptocurrency and Blockchain technology.

  • Acted as team leader until the company was acquired by BnkToTheFuture, an online investment platform.

HUB387
HUB387
Software Engineer
2014 - 2017 (3 years)
Sarajevo, Bosnia and Herzegovina
  • Primarily worked on web services development, back-end databases, and AWS DevOps for HUB387, the starting ground for many startups.

  • Worked on the development of the educational platform Bookvar, bookvar.co.

  • Developed a system for tracking and monitoring beehive activity named Habeetat at dev.habeetat.io.

Portfolio

Software Engineer - Habeetat
Software Engineer - Habeetat

Habeetat core mission is to enable a data-driven process of honey production to improve bee wellbeing. It is envisioned as the first digital social platform for beekeepers, enabling real-time monitoring, data-driven analysis, and personalized notifications. Worked on hardware and software components and served as a team lead for a few years.

Blockchain Developer - Altcoin.io
Blockchain Developer - Altcoin.io

Worked on Altcoin.io, a decentralized exchange, for a few years using cutting-edge technologies at the time such as second-layer scaling solutions for Ethereum network. Acted as lead developer for the Altcoin.io project. Technologies used: Blockchain, app architecture, Node.js, Scrum, Solidity, TypeScript, Ethereum.

Software Engineer - Mediadrive
Software Engineer - Mediadrive

Mediadrive is a distributed file-sharing solution for the movie industry. Used IPFS and some other P2P technologies to make the process more streamlined. Worked on the app development, adding new features and refining existing ones.

Education

BSc Computer Software Engineering
BSc Computer Software Engineering
International Burch University - Sarajevo, Bosnia and Herzegovina
2011 - 2014 (3 years)