Exhibit 99.1

SEPARATION AGREEMENT AND GENERAL RELEASE

This Separation Agreement and General Release (this or the “Agreement”) is hereby entered into by and between Sally L. Edwards, an individual (the “Executive”), and DDi Corp., a Delaware corporation, on behalf of itself and all of its subsidiaries (collectively, the “Company”).

Recitals

A. The Executive has been employed by the Company pursuant to an Employment Agreement by and between the Company and the Executive effective as of April 13, 2007 (the “Employment Agreement”), serving as Senior Vice President & Chief Financial Officer of the Company; and

B. The Executive has elected to resign her employment with the Company and any of its parents, direct or indirect subsidiaries, affiliates, divisions or related entities (collectively referred to herein as the “Company and its Related Entities”) on the terms and conditions set forth in this Agreement.

Agreement

In consideration of the mutual promises contained herein and for other good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereby agree as follows:

1. Effective Date . Except as otherwise provided herein, this Agreement shall be effective on the eighth day after it has been executed by both of the parties (the “Effective Date”).

2. End of Employment . The Executive’s employment with the Company and its Related Entities has ended or will end, effective as of 5:00 p.m. Pacific Time, on October 16, 2009 (the “Termination Date”). The Executive resigns as a director and/or officer of the Company and its Related Entities effective as of 5:00 p.m. Pacific Time, on the Termination Date.

3. Continuation of Benefits After the Termination Date . Except as expressly provided in this Agreement or in the plan documents governing the Company’s employee benefit plans, after the Termination Date, the Executive will no longer be eligible for, receive, accrue, or participate in any other benefits or benefit plans provided by the Company and its Related Entities, including, without limitation, medical, dental and life insurance benefits, and the Company’s 401(k) retirement plan; provided, however, that nothing in this Agreement shall waive the Executive’s right to any vested amounts in the Company’s 401(k) retirement plan, which amounts shall be handled as provided in the plan.

4. COBRA Benefits . The Company shall (i) pay on behalf of the Executive, to the extent permitted by the COBRA provider; or (ii) provide reimbursement, of insurance premiums payable by the Executive to continue the Executive’s group health coverage for herself and eligible dependents pursuant to COBRA (if the Executive timely elects COBRA coverage) for the

first twelve (12) months following the Termination Date (the “Severance Period”), as long as the Executive has not revoked this Agreement as provided in Section 17(c), below, and the Company has received a signed original of this Agreement.

5. Normal Salary Through Termination Date . Within one business day after the Termination Date, the Company shall pay the Executive the prorated portion of her salary earned but unpaid through the Termination Date, plus payment for 102.82 hours of accrued but unused vacation time. The Company also shall reimburse any business expenses incurred by the Executive in accordance with the Company’s business expense policy prior to the Termination Date, provided that the Executive has submitted all required supporting documentation and the expense was properly incurred.

6. Severance Payment . In return for the Executive’s promises in this Agreement, the Company will provide Executive with a severance payment in the gross amount of Two Hundred and Fifty Thousand Dollars $250,000, which is equal to twelve months of base salary (“Severance Payment”), less deductions required by law, as long as the Executive has not revoked this Agreement as provided in Section 17(c), below, and the Company has received a signed original of this Agreement. The Severance Payment shall be paid as follows: the first payment shall be in the amount of one hundred thousand dollars ($100,000) and shall be paid within eight business days following the Effective Date. The remaining payments shall equal a total of one hundred and fifty thousand dollars ($150,000) and shall be paid to the Executive in twelve (12) equal consecutive payments commencing in November 2009 on the first business day of the month. The payments shall be made, at the option of the Executive, by checks mailed to the Executive or direct deposit to an account specified by the Executive. The Executive understands that she will not receive any portion of the Severance Payment if she revokes this Agreement as provided in Section 17(c) of this Agreement or the Company has not received a signed original of this Agreement. The Company may delegate the payment obligation under this Section 6 to its operating subsidiary, Dynamic Details, Inc., provided that the Company shall remain fully responsible for performing the payment obligations as set forth herein.

7. Stock Options and Restricted Stock . As long as the Executive has not revoked this Agreement as provided in
Section 17(c), below, the Company will accelerate the vesting of 13,333 restricted share units scheduled to vest on October 28, 2009 and 6,667 shares of unvested restricted shares scheduled to vest on December 4, 2009, held by the Executive, effective on the Termination Date. All outstanding unvested stock options to purchase shares of common stock of the Company, $0.001 par value per share, previously granted to the Executive and all other unvested shares of restricted stock or restricted stock units shall be cancelled as of the Termination Date.

8. Bonus Payment. As long as the Executive has not revoked this Agreement as provided in Section 17(c), below, the Company will provide the Executive with a payment in an amount equal to the pro-rata portion of any bonus payment that would have been due to the Executive under Section 3(b) of the Employment Agreement had the Executive been employed by the Company as of the last day of the fiscal year during which such termination occurred, calculated as the product of the bonus, if any (as determined pursuant to Section 3(b) of the Employment Agreement) multiplied by a fraction, the numerator equal to the number of days from the start of the applicable fiscal year through the Termination Date, and the denominator being 365, less deductions required by law.

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9. Legal Reimbursement Payments. The Company and the Executive have agreed upon an amount of the Executive’s actual legal fees and costs owed to Mitchell Silberberg & Knupp LLP (“MSK”) that the Company shall pay to MSK (the “MSK Payment”). The Executive and the Company have agreed that notwithstanding anything to the contrary herein or in any other agreement, the MSK Payment constitutes the total obligation of the Company to the Executive relating to her legal representation expenses owing to MSK arising out of her employment with the Company.

10. Effect of Subsequent Employment . If the Executive accepts any employment at any time prior to the expiration of the Severance Period, and as a result becomes covered under an employer’s group health plan, the Company’s obligation to reimburse premiums for insurance coverage under COBRA or otherwise will be extinguished as of the date the Executive begins receiving coverage under the group health plan of the Executive’s new employer.

11. Acknowledgement of Total Compensation and Indebtedness . The Executive acknowledges and agrees that the COBRA benefits, cash payments and other payments under Sections 4 through 9 of this Agreement extinguish any and all obligations for monies, or other compensation or benefits that the Executive claims or could claim to have earned or claims or could claim is owed to her as a result of her employment by the Company and its Related Entities through the Termination Date, under the Employment Agreement or otherwise.

12. Tax Consequences . The Executive acknowledges that (a) the Company has not made any representations to her about, and that she has not relied upon any statement in this Agreement with respect to, any individual tax consequences that may arise by virtue of any payment provided under this Agreement and/or her exercise of any stock options, including, but not limited to, the applicability of Section 409A of the Internal Revenue Code, and (b) she has consulted or will consult with her own tax advisors as to any such tax consequences.

13. Status of Related Agreements and Future Employment .

a. Agreements Between the Executive and the Company . The Executive and the Company agree that, in addition to this Agreement, (i) the Employment Agreement; (ii) the Restricted Stock Unit Award Agreement dated October 28, 2008 (the “Restricted Stock Unit Award Agreement”); (iii) the Restricted Stock Agreement dated December 4, 2007 (the “Restricted Stock Agreement”); and (iv) the Stock Option Award Agreement dated April 4, 2006 and the Stock Option Award Agreement dated February 26, 2007 (collectively, the “Stock Option Award Agreements”); are the only other executed agreements between the Company and the Executive relating to the Executive’s employment.

b. Employment Agreement . The parties agree that the Employment Agreement shall be terminated as of the Termination Date. Notwithstanding the termination of the Employment Agreement