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About me

As an associate at Helmer, Conley & Kasselman, my first and only job is to solve your legal problems. Our firm has created a warm and caring environment, where we treat our clients like family and work to see that their needs are met. I take that obligation seriously, and I will aggressively represent your interests and ensure that your rights are respected.

We have offices located throughout New Jersey for your convience, and we will do our best to accomodate your schedule. So if you face an issue with your family or business, or you are being accused of a crime, please call us immediately. Our team is here to fight for you.


Photos and videos

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Practice areas


  1. Family: 70%
  2. Criminal Defense: 20%
  3. Business: 10%



Hourly ($300-350/hour), contingent (33%), Fixed (sometimes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • Christopher Fredrick Vanette

    The great thing about Sean is his ability to know the law inside and out, which is critical in many cases where a legal argument arises. I have personally read some of Sean's briefs on criminal law matters, and they are excellent.


    Christopher Vanette Landlord or tenant Attorney
    Relationship: Co-worker

Contact info

Helmer, Conley & Kasselman, P.A.

519 White Horse Pike
Haddon Heights, NJ, 08035


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Rising StarSuperLawyers2016
Top LawyersNew Jersey Monthly2016
Top LawyersNew Jersey Monthly2015
Awesome AttorneySouth Jersey Magazine2015
Top AttorneySJ Magazine2015
Rising StarSuperLawyers2015
Awesome AttorneySouth Jersey Magazine2014
Top AttorneySJ Magazine2014
Top LawyersNew Jersey Monthly2014
Rising StarSuperLawyers2014
Awesome AttorneySouth Jersey Magazine2013
Top LawyersNew Jersey Monthly2013
Rising StarSuperLawyers2013
Top AttorneySJ Magazine2011
Work experience
TitleCompany nameDuration
AssociateHelmer, Conley & Kasselman, P.A.2010 - Present
Director of Information ServicesHelmer, Conley & Kasselman, P.A.2008 - Present
Law ClerkHelmer, Conley & Kasselman, P.A.2006 - 2010
Legal InternCamden County Prosecutor's Office2005 - 2006
Quality Assurance and Information Systems ConsultantQuality Management Associates, Inc.2002 - 2004
Association namePosition nameDuration
Cheltenham Police Pension Fund, Inc.Director2012 - Present
New Jersey State Bar AssociationMember2010 - Present
Camden County Bar AssociationMember2010 - Present
Legal cases
Case nameOutcome
State v. GillespieDefendant acquitted of all charges.
See all legal cases 
Publication nameTitleDate
Continuing Legal Education Seminar publicationCriminal Law Updates, 2014-20152015
Continuing Legal Education Seminar publicationCriminal Law Updates, 20142014
Continuing Legal Education Seminar publicationCriminal Law Updates, 2013-20142014
The Barrister (Camden County Bar Association)Six-Year Statute of Limitations Applied to Claims for Contribution Under the New Jersey Spill Act2013
Continuing Legal Education Seminar publicationCriminal Law Updates, 2012-20132013
Continuing Legal Education Seminar publicationAdvanced Criminal Law2012
Continuing Legal Education Seminar publicationEthics Issues in Criminal and General Practice2012
Continuing Legal Education Seminar publicationNew Jersey Criminal Law Update 2010-20112011
New Jersey Cops MagazineRole Reversal: Police Officer as Suspect2011
New Jersey Cops MagazineImproving Eyewitness Identifications2011
Continuing Legal Education Seminar publicationCriminal Law Update 20112011
Continuing Legal Education Seminar publicationRecent Developments in New Jersey Criminal Law2010
Continuing Legal Education Seminar publicationNJ Criminal Law: What You Don't Know Can Hurt You2009
School nameMajorDegreeGraduated
Rutgers University School of LawLawJD - Juris Doctor2008
Rutgers UniversityPublic AdministrationMPA - Master of Public Administration2008
Ursinus CollegePoliticsBA - Bachelor of Arts2004
Speaking engagements
Conference nameTitleDate
Updates in Criminal LawAttorney Ethics and the Internet2016
Monthly LuncheonCyber Security Considerations for Small Businesses2016
Updates in Criminal LawAttorneys and the Internet2015
Continuing Legal EducationNJ Data Breach Law and the Ethics of Client Confidentiality2015