Enver Biševac

I am a software engineer with twenty years of experience building cloud-native systems, and a PhD candidate at the University of Niš working on combinatorics and cryptography. I currently work at Harness on CI/CD, feature flags and source control, and consult on point-of-sale systems.

My research applies Catalan numbers and related combinatorial structures — lattice paths, ballot sequences, convex-polygon triangulations — to cryptography. Based in Novi Pazar, Serbia.

Research

My work sits at the intersection of combinatorics and cryptography: constructing encryption keys (“Catalan-keys”) from combinatorial objects and evaluating their quality with the NIST statistical test suite. Full profile on ResearchGate.

1. Application of Catalan Numbers and the Lattice Path Combinatorial Problem in Cryptography. M. Saračević, S. Adamović, E. Biševac. Acta Polytechnica Hungarica 15(7), 91–110, 2018. doi:10.12700/APH.15.7.2018.7.5
2. Encryption based on Ballot, Stack Permutations and Balanced Parentheses using Catalan-Keys. M. Saračević, E. Korićanin, E. Biševac. JITA — Journal of Information Technology and Applications 14(2), 2018. doi:10.7251/JIT1702069S
3. Implementation of the Convex Polygon Triangulation Algorithm. M. Saračević, P. Stanimirović, S. Mašović, E. Biševac. Facta Universitatis, Ser. Mathematics and Informatics 27(2), 213–228, 2012.

Software

Commander

A cross-platform, Total Commander–style dual-pane file manager I build and maintain — folder tabs, rich file viewers, batch tools, format converters, encryption, remote SFTP and disk cleanup, with a Normal and an Advanced mode.

Fully functional shareware, $10 / year. Available for macOS, Windows and Linux — see the full feature list and downloads or the Commander documentation.

Selected earlier work

• Gitness (Harness) — a Git source-control-management platform; deep Git-internals work.
• Feature Flags & SDKs (Harness) — controlled rollouts and risk-free experimentation, with SDKs across languages.
• ElasticPOS — a decentralized, cloud-accessible point-of-sale platform resilient to unstable networks.
• Printer — a client-side bridge letting web apps print directly to POS hardware (Epson ESC/POS) or PDF.
• CloudPOS — a three-module POS suite with offline-capable Android and desktop clients.
• UNIS — a complete university information system (CMS, DMS and student portal).

Experience

• 2023 —

  Consultant, OneClick

  Architecture and development of ElasticPOS, a decentralized POS system.

• 2021 —

  Staff Software Engineer II, Harness

  CI/CD, Feature Flags and Gitness; SDKs and Git internals.

• 2019 – 21

  Consultant Developer, Endava

  Azure provisioning services, then lead developer on a design-first CI product.

• 2014 – 19

  Python & Android Developer, IKRESOFT

  REST APIs and Android apps across many projects.

• 2009 – 14

  Software Developer & Teaching Assistant, University of Novi Pazar

  Built the university's online services; taught lab exercises in web and Android development.

• 2004 – 09

  Founder & CEO, IKRESOFT

  Modular accounting software on a client/server architecture.

Contact

Email me at enver@bisevac.com. I'm open to consulting, systems and cloud engineering, and research collaboration.