Mihailo Bjelic

Mihailo Bjelic was born and raised in Serbia, and unlike many public figures in technology he has kept most details of his childhood private. Public records of his career begin with his university years in Belgrade, where he studied engineering. Anyone researching a Mihailo Bjelic biography quickly notices this deliberate reticence: he discusses systems and protocols at length in interviews, but rarely himself ^[1].

He earned a degree in information systems engineering from the University of Belgrade, Serbia's largest and oldest university ^[1]. His academic background gave him a grounding in distributed systems and software architecture, subjects that later shaped his approach to blockchain design. Colleagues and interviewers have described him as methodical and research-driven, a temperament visible in his early technical writing ^[2].

Serbia in the 2010s had a growing software outsourcing industry but few homegrown consumer technology companies. For an engineer interested in frontier computing, open source communities on the internet offered a more direct route to meaningful work than the local job market. That context helps explain why Bjelic gravitated toward Ethereum, a global, permissionless project where contributions mattered more than location or credentials ^[2].

Bjelic entered the blockchain world as an independent researcher rather than a startup founder. He became active in the Ethereum research community in the late 2010s, publishing analyses and proposals on scaling, the central technical problem facing the network at the time ^[2]. Ethereum could process only a limited number of transactions per second, and fees rose sharply whenever demand spiked. Researchers around the world were exploring sidechains, rollups, and other so-called Layer 2 designs to relieve the pressure.

Through this work he came into contact with the team behind Matic Network, a scaling project founded in 2017 in India by Jaynti Kanani, Sandeep Nailwal, and Anurag Arjun ^[3]. Matic had built a proof-of-stake sidechain compatible with Ethereum and had launched its MATIC token through a sale on the Binance Launchpad in 2019 ^[3]. Bjelic had independently been developing ideas about a broader, multi-chain approach to Ethereum scaling, and his thinking aligned closely with where the Matic founders wanted to take the project.

In February 2021 Matic Network rebranded as Polygon, and Bjelic was announced as a co-founder alongside the original three ^[3]. The rebrand was more than cosmetic. Polygon repositioned itself as a general framework for building and connecting Ethereum-compatible networks, an ambition often summarized at the time as an aim to become an internet of blockchains for Ethereum ^[4]. For those asking who was Mihailo Bjelic within this structure, the answer is that he served as one of the principal architects of that expanded vision, contributing to protocol strategy and research direction ^[4].

The clearest of Mihailo Bjelic achievements is the growth of Polygon itself. After the 2021 rebrand, the platform became one of the most heavily used pieces of infrastructure in the cryptocurrency industry. Its main proof-of-stake chain regularly handled millions of transactions per day, at times exceeding the daily transaction count of Ethereum's base layer, and it hosted tens of thousands of decentralized applications ^[4]. Low fees made it a common home for games, marketplaces, and decentralized finance protocols that would have been too expensive to run directly on Ethereum.

Polygon also drew significant institutional backing during Bjelic's tenure as co-founder. In February 2022 the project raised about 450 million dollars in a funding round led by Sequoia Capital India, with participation from SoftBank and Tiger Global among other investors ^[5]. The raise valued the network's ecosystem in the billions and financed an aggressive expansion into zero-knowledge proof technology, a cryptographic method for verifying computation cheaply that Polygon's leadership, Bjelic included, identified as the long-term future of scaling ^[5].

Mainstream partnerships followed. Companies including Starbucks, Nike, and Reddit built consumer blockchain products on Polygon rails, decisions widely reported in the business press as evidence that the network had crossed from crypto niche into corporate infrastructure ^[6]. In 2023 the team introduced the Polygon 2.0 roadmap, a redesign of the protocol around interconnected zero-knowledge networks and a proposed upgrade of the MATIC token to a new asset called POL ^[7]. Bjelic was among the co-authors of the vision documents behind that transition, extending the research role he had played since before the rebrand ^[7].

Bjelic's public commentary has consistently emphasized a few themes. The first is that no single blockchain can serve global demand, so scaling must come from many specialized chains that share security and communicate seamlessly ^[4]. This multi-chain thesis, unusual when Matic operated a single sidechain, became Polygon's defining strategy and later an industry norm.

A second theme is loyalty to Ethereum. While some competitors positioned themselves as Ethereum replacements, Bjelic and his co-founders framed Polygon as a committed extension of the Ethereum ecosystem, inheriting its security assumptions and developer tools rather than fighting them ^[2]. He has argued in interviews that Ethereum's network effects and decentralization make it the most credible settlement layer for an open financial internet ^[2].

The third theme is the primacy of zero-knowledge cryptography. Polygon spent heavily on the field, including the acquisition of the startup Mir in December 2021 for a sum reported at around 400 million dollars in tokens, then one of the largest deals in the sector ^[8]. Bjelic described zero-knowledge proofs as the end state of blockchain scaling, and the launch of the Polygon zkEVM network in March 2023 turned that research bet into a live product ^[8].

Bjelic has remained based in Serbia for much of his career, a fact often noted in profiles because it made him a rare Eastern European co-founder at the top of a project whose roots were in India and whose market was global ^[1]. He represents a distributed style of company building: Polygon's founders and staff have worked across India, Europe, the United Arab Emirates, and elsewhere, coordinating largely online ^[6].

He maintains a modest public profile compared with his co-founder Sandeep Nailwal, who became the project's most visible spokesperson. Bjelic's public output consists mainly of technical threads, research co-authorship, and occasional interviews with industry and business media ^[2]. Details about his family and private life are not part of the public record, and consistent with responsible coverage of living persons, little beyond his professional biography can be stated with confidence.

Among the well-documented Mihailo Bjelic facts is his recognition in Fortune magazine's 40 Under 40 list in the crypto category in 2022, where he was honored alongside his Polygon co-founders for the platform's growth ^[6].

It is early to speak of a settled legacy for a living technologist, but Bjelic's influence on blockchain scaling is already visible. The multi-chain, Ethereum-aligned architecture he helped articulate at Polygon has been adopted, in various forms, across the industry, and Polygon's chain development kit lets outside teams launch their own zero-knowledge networks using the project's technology ^[7]. Millions of users interact with applications settled on infrastructure he helped design, most without ever knowing his name.

His career also carries a broader significance for the geography of technology. A researcher from Belgrade who joined an Indian founding team to build globally used financial infrastructure illustrates how open protocols reorganized opportunity in the 2020s ^[1]. University programs and startup communities in Serbia have pointed to him as evidence that world-class protocol engineering can come from the region ^[1].

Polygon's story continues to evolve, with the migration from MATIC to POL and the rollout of the Polygon 2.0 architecture still in progress as of the mid-2020s ^[7]. Whatever the eventual outcome, Bjelic's place in the record is secure as one of the four co-founders who turned a single sidechain into one of the defining scaling platforms of Ethereum's first decade ^[3].