Document:

<PAGE>   1

                                                                   Exhibit 10.22

                   [Letterhead of Dynacs Engineering Co. Inc.]

                                 PROMISSORY NOTE

$110,000                                                      February 15, 1997

FOR VALUE RECEIVED, the undersigned, a Florida Corporation, promises to pay to
the order of VENUGOPAL SRINIVASAN at 1528 Colony Ct., Palm Harbor, Florida, or
at such other place as the Payee hereof may, from time to time, designate in
writing, the principal sum of One Hundred Ten Thousand and No/100 Dollars
($110,000.00), with simple interest from the date hereof at the rate of 1% per
month until maturity. All the principal shall be due and payable in full on
February 15, 1998. Interest at the aforementioned rate shall be applied to any
remaining unpaid principal and shall be due and payable on the 15th day of each
month until maturity.

In the event of a default under this note, the undersigned shall pay all costs
and expenses of collection including reasonable attorney's fees.

This indebtedness may be prepaid in part or in full at any time with interest to
date of payment only.

This Note is not assignable by either the payee or the undersigned Maker.

This Note is to be construed and enforced according to the laws of the State of
Florida.

                                        DYNACS ENGINEERING CO., INC.

                                     By /s/ Ramendra P Singh
                                        ----------------------------------
                                        Ramendra P Singh, President
<PAGE>   2

                   [Letterhead of Dynacs Engineering Co. Inc.]

                                 PROMISSORY NOTE

$110,000                                                       February 15, 1999

FOR VALUE RECEIVED, the undersigned, a Florida corporation, promises to pay to
the order of VENUGOPAL SRINIVASAN at 1528 Colony Ct., Palm Harbor, Florida, or
at such other place as the Payee hereof may, from time to time, designate in
writing, the principal sum of One Hundred Ten Thousand and No/100 Dollars
($110,000.00), with simple interest from the date hereof at the rate of 1% per
month until maturity. All the principal shall be due and payable in full on
February 15, 2000. Interest at the aforementioned rate shall be applied to any
remaining unpaid principal and shall be due and payable on the 15th day of each
month until maturity.

In the event of a default under this note, the undersigned shall pay all costs
and expenses of collection including reasonable attorney's fees.

This indebtedness may be prepaid in part or in full at any time with interest to
date of payment only.

This Note is not assignable by either the payee or the undersigned Maker.

This Note is to be construed and enforced according to the laws of the State of
Florida.

                                       DYNACS ENGINEERING CO., INC.

                                           By:/s/ Ramendra P. Singh
                                              ------------------------------
                                              Ramendra P. Singh, President
<PAGE>   3
                          AMENDMENT TO PROMISSORY NOTE

     This Amendment to Promissory Note (the "Amendment") dated August 14, 2000
by and between Dynacs Inc. (formerly known as Dynacs Engineering Co., Inc.)(the
"Company") and Venugopal Srinivasan (the "Payee").

     Reference is made to that certain promissory note dated February 15, 1999
by and between the Company and Payee in the principal amount equal to $110,000
(the "Promissory Note").

     The parties agree that the Maturity of the Promissory Note shall be
extended to August 15, 2000.

     All other terms and conditions of the Promissory Note shall remain in full
force and effect.

                                        DYNACS INC.

                                        By: /s/ Ramendra P. Singh
                                           ------------------------------
                                           Ramendra P. Singh<PAGE>   1

                                                                   Exhibit 10.23

                   [Letterhead of Dynacs Engineering Co. Inc.]

                                PROMISSORY NOTE
$160,000                                                        Palm Harbor, Fl.
                                                                March 30, 1999

FOR VALUE RECEIVED, the undersigned, a Florida Corporation, promises to pay to
the order of Ramendra P. Singh (hereinafter referred to as the "Payee") at 118
Harbor Drive, Palm Harbor, Florida, or at such other place as the Payee hereof
may, from time to time, designate in writing, the principal sum of One Hundred
Sixty Thousand and No/100 Dollars ($160,000), with simple interest thereon
calculated at the rate of 12% per annum, from the date hereof until Maturity.
All principal shall be due and payable in full SIX MONTHS ("Maturity") from the
date hereof. The interest shall be due and payable on the 29th day of each month
beginning April, 1999, until Maturity.

Early Repayment

In the event the Undersigned wishes to repay the principal amount, in part or
whole, before Maturity, then interest on the portion of the Principal repaid
shall be calculated as set forth below:

-     for portions of the Principal held for greater than three (3) months but
      less than six (6) months from the date hereof, interest shall be
      calculated at the rate of 1.33% per month, with the period rounded to the
      next larger whole month;

-     for portions of the Principal held for greater than one (1) month but less
      than three (3) months from the date hereof, interest shall be calculated
      at the rate of 1.94% per month, with the period rounded to the next larger
      whole month;

-     for portions of the Principal held for greater than two (2) weeks but less
      than one (1) month from the date hereof, interest shall be calculated at
      the rate of 0.51% per week, with the period rounded to the next larger
      whole week;

-     for portions of the Principal held for less than two (2) weeks from the
      date hereof, interest shall be calculated at the rate of 0.55% per week,
      with the period rounded to the next larger whole week;
<PAGE>   2

Each and all payments shall be applied first to interest at the rate of
aforesaid upon the principal sum or so much thereof as shall from time to time
remain unpaid, and the balance shall be applied on account of principal.

In the event of a default under this Note, the undersigned shall pay all costs,
and expenses of collection, including reasonable attorneys' fees.

This note is not assignable by either the payee or the undersigned Maker.

This note is to be construed and enforced according to the laws of the State of
Florida.

SEAL OF THE CORPORATION                         Dynacs Engineering Company, Inc.

                                                By: /s/ Ramendra P. Singh
                                                    -------------------------
                                                    RAMENDRA P. SINGH
                                                As: President/CEO
<PAGE>   3
                          AMENDMENT TO PROMISSORY NOTE

     This Amendment to Promissory Note (the "Amendment") dated September 29,
1999 by and between Dynacs Inc. (formerly known as Dynacs Engineering Co., Inc.)
(the "Company") and Ramendra P. Singh (the "Payee").

     Reference is made to that certain promissory note dated March 30, 1999 by
and between the Company and Payee in the principal amount equal to $160,000
(the "Promissory Note").

     The parties agree that the Maturity of the Promissory Note shall be
extended to September 30, 2000.

     All other terms and conditions of the Promissory Note shall remain in full
force and effect.

                                        DYNACS INC.

                                        By: /s/ Robert Rodriguez
                                            _______________________
                                            Robert Rodriguez<PAGE>   1

                                                                   Exhibit 10.24

                   [Letterhead of Dynacs Engineering Co. Inc.]

                                 PROMISSORY NOTE

$400,000                                                        Palm Harbor FL,
                                                                June 10, 1999

FOR VALUE RECEIVED, the undersigned, a Florida Corporation, promises to pay to
the order of Peter W. Likins or Patricia R. Likins (herinafter referred to as
the "Payees") at 100 North Camino Espanol, Tucson, Arizona 85716, or at such
other place as the Payees hereof may, from time to time, designate in writing,
the principal sum of Four Hundred Thousand Dollars ($400,000), with simple
interest thereon calculated at the rate of 12% per annum, from the date hereof
until Maturity. All principal shall be due and payable in full SIX MONTHS
("Maturity") from the date hereof. The interest shall be due and payable on the
10rd day of each month beginning July 1999, until Maturity.

Each and all payments shall be applied first to interest at the rate of
aforesaid upon the principal sum or so much thereof as shall from time to time
remain unpaid, and the balance shall be applied on account of principal.

In the event of a default under this Note, the undersigned shall pay all costs,
and expenses of collection, including reasonable attorneys' fees.

This note is not assignable by either the payees or the undersigned Maker.

This note is to be construed and enforced according to the laws of the State of
Florida.

SEAL OF THE CORPORATION                       Dynacs Engineering Company, Inc.

                                              By: /s/ Ramendra P. Singh
                                                  -------------------------
                                                  RAMENDRA P. SINGH
                                              As: President/CEO

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00005-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00005-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00005-of-00352.parquet"}]]