Major (Retd.) Md. Nurul Mannan Choudhury, CPP, MBA (HRM), Managing Director of SecurityLink Ltd., seated at his office desk
Managing Director

Major (Retd.) Md. Nurul Mannan Choudhury

CPPMBA (HRM)Major (Retd.), Bangladesh ArmyChairman, ASIS International BangladeshEducator & AcademicAuthorSocial ActivistSports Patron

Founder and Managing Director of SecurityLink Ltd., and formerly the founding Managing Director of Avant-garde Alliance Limited and a Director of Aegis Services Ltd., a sister concern of Square Group. He is a Board Certified Protection Professional (CPP) from ASIS International, USA, and has served as Chairman of ASIS International's Bangladesh chapter. An educator, author, social activist and sports patron — his influence extends well beyond the security industry.

Only a satisfied employee can satisfy our client.

— Md. Nurul Mannan Choudhury

An unusual entry point into the security industry

Mr. Choudhury observed early on that most security companies in Bangladesh run on a purely financial model, with little regard for the people carrying out the work. Though the industry operates on thin margins, he made a deliberate decision to build differently — out of an attachment to the low-salaried members of the security workforce he had come to know over years in the field.

He applied that thinking first at Avant-garde and at Aegis, and found that a management system built on fairness could produce a quality organisation in a short span of time. That same philosophy now runs through SecurityLink.

Beyond the company, he has conducted security workshops for organisations including Prothom Alo and ISSIT Ltd., served as a guest speaker for Future Leaders, and worked as a security consultant for clients such as KAFCO, Palace Resort and ISSIT. As an army instructor, he has also trained civil service and Bangladesh Police officers. He takes a keen interest in literary writing; his first book was published in 2005.

A passionate educator, Mr. Choudhury has taught at some of the country's most prestigious institutions, including the University of Dhaka and the Bangladesh Police Staff College, shaping the next generation of security and management professionals. He is the author of Physical Security Management: A Holistic and Integrated Approach, a comprehensive text that draws on decades of operational and academic experience to set a new benchmark for security literature in the region.

His commitment to social development runs deep. He actively patronises Hajipur Society, Kulaura, a social and civic organisation working in his home community, and founded PAIKPARA M.A. Ahad Adhunik College to expand access to education in underserved areas. On the sports front, he runs an AFC-accredited football academy and has served as a coach for the Bangladesh National Football Team, channelling the same discipline and leadership from the military arena into nurturing young athletes.

Educator & Author

Shaping minds, setting standards

Mr. Choudhury's commitment to education extends well beyond corporate training. He has served as a faculty member and guest lecturer at some of Bangladesh's most distinguished institutions, including the University of Dhaka and the Bangladesh Police Staff College, where he has taught courses on security management, leadership and organisational discipline.

He is the author of Physical Security Management: A Holistic and Integrated Approach, a comprehensive text that distils decades of operational experience into a structured framework for security professionals. The book covers threat assessment, guard force management, technology integration and the organisational culture needed to sustain a high-performing security operation — and has been presented to senior government officials and industry leaders.

Md. Nurul Mannan Choudhury presenting a copy of his book Physical Security Management to the Expatriate Welfare and Overseas Employment Minister
Members of Hajipur Society Kulaura holding a banner during a community social and civic event
Social Activism

Building communities, not just companies

For Mr. Choudhury, leadership is not confined to boardrooms and guard posts. He actively patronises Hajipur Society, Kulaura, a social and civic organisation that drives community development, welfare programmes and civic engagement in his home region of Sylhet.

He founded PAIKPARA M.A. Ahad Adhunik College, an institution dedicated to expanding access to quality education in an underserved area. From poverty relief drives to direct aid for families in need, his social initiatives reflect the same philosophy that guides SecurityLink: that sustainable progress comes from investing in people.

Sports Patron

Discipline beyond the uniform

The same discipline and tactical thinking that defined Mr. Choudhury's military and security career now drives his involvement in sport. He runs an AFC-accredited football academy, providing structured coaching, fitness training and competitive pathways for young footballers in Bangladesh.

His coaching credentials extend to the national stage — he has served as a coach for the Bangladesh National Football Team, bringing military-grade leadership and organisational discipline to the country's premier football squad. He also sponsors local tournaments, including the COAB Cup T20 Cricket Tournament, believing that sport builds the character and resilience that every security professional needs.

Md. Nurul Mannan Choudhury with the Bangladesh National Football Team coaching staff and players on the field
Career

From the army to the industry

01
Army Career

Infantry Officer, Bangladesh Army

Served as company commander and staff officer across various headquarters and regiments, and as an instructor in different military institutions.

02
Square Group

Director, Aegis Services Ltd.

Led guard training and operations at Aegis Services, a sister concern of Square Group, reviewing passing-out parades and addressing supervisor teams directly.

03
Founder, MD

Avant-garde Alliance Limited

Founded and led Avant-garde Alliance, training and managing its guard force while continuing to speak at industry security workshops.

04
Board Certified

Certified Protection Professional

Achieved Board Certification in security management from ASIS International, USA, and later became Chairman of ASIS International's Bangladesh chapter.

05
Present

Founder & Managing Director, SecurityLink Ltd.

Built SecurityLink around an employee-oriented management model, believing a justly treated guard force is what makes a security company defensible in the field.

Behind the Work

Where the title meets the ground

The work doesn't happen behind a desk. It happens in the server room, on the camera floor, and across the training ground — wherever the standard has to hold.

Md. Nurul Mannan Choudhury examining and calibrating surveillance camera equipment at the office
Technical

Selecting the right lens for the job

Md. Nurul Mannan Choudhury monitoring a multi-camera CCTV feed from the operations desk
Operations

Watching every angle, all at once

Md. Nurul Mannan Choudhury briefing a room of uniformed SecurityLink guards during a training session
Field Leadership

The briefing before the briefing

On the Global Stage

Conferences, collaborations & the circuit

From the GSX floor in the United States to training halls in Dhaka — the work follows the standard wherever it needs to go.

Md. Nurul Mannan Choudhury speaking at a podium during an international security conference
Keynote

Taking the stage at GSX

Md. Nurul Mannan Choudhury addressing a First Aid Training session organized by Bangladesh Red Crescent Society for SecurityLink
Training

When safety is the subject, not just the slogan

Md. Nurul Mannan Choudhury at a security technology trade show alongside global exhibitors
Trade Show

Scanning the horizon for what's next

Md. Nurul Mannan Choudhury with fellow delegates at the Global Security Exchange conference
Networking

Where the industry gathers

Md. Nurul Mannan Choudhury with international delegates at a cross-border security collaboration event
International

Conversations that cross borders

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