Alexander Sendlak
Managing Partner · Family Law
Alexander Sendlak helps families across DuPage the surrounding counties through divorce, custody, and support — a former DuPage County prosecutor who has tried hundreds of cases and now puts that courtroom experience to work for his clients.
20
YEARS PRACTICING
100s
CASES TRIED
4+ ⭐
ON GOOGLE, AVVO AND MORE
5
COUNTIED SERVED
Alexander Sendlak is a family law attorney and Managing Partner at Dolci Weiland & Sendlak in Oakbrook Terrace, Illinois. He focuses his practice on divorce, child custody, child support, spousal maintenance, and parental rights for clients throughout DuPage, Will, Kane, Kendall, and Cook counties.
Alexander brings a perspective most family lawyers don’t have: he spent nearly seven years as a prosecutor at the DuPage County State’s Attorney’s Office before turning to family law in 2014. That trial background means he reads a courtroom quickly, prepares every case as if it will be tried, and negotiates from a position of genuine strength — while keeping the focus on what matters most to his clients, their children and their financial future.
How Alexander helps Illinois residents
Contested and uncontested divorce, asset division, alimony and post-decree modifications.
Parenting time, allocation of responsibilities and custody modifications.
Support orders, maintenance, and adjustments after a change in circumstances.
Establishing paternity, guardianship, and relocation (removal) cases.
Marital and non-marital property classification, division of assets and debt on divorce, maintenance (alimony) including waiver, disposition of property on death, business interests, retirement accounts, inheritances, and choice-of-law provisions.
Division of marital property and classification of separate property, including real estate, investment accounts, vehicles, and personal possessions.
Estate and legacy planning, wills, trusts, living trusts and inheritance disputes.
Background & experience
2006
Began practicing law
Started his legal career in personal injury litigation, learning the mechanics of building and trying a case from the ground up.
2007 – 2014 · DuPage County State’s Attorney’s Office
Career prosecutor
For nearly seven years, Alexander prosecuted cases ranging from traffic offenses to first-degree murder — taking hundreds to trial, including DUIs and felony drug offenses.
2014 – Present
Family law & Managing Partner
Brought his courtroom skills to family law, litigating divorce, legal separation, child support, maintenance, and removal — and now leads the firm as Managing Partner.
Recent results, settlements or verdicts
CONTESTED CUSTODY
Primary parenting time secured
Protected a client’s role as the children’s primary caregiver after a contested dispute.
HIGH-ASSET DIVORCE
Equitable division achieved
Negotiated a fair split of marital property, business interests, and retirement accounts.
POST-DECREE
Support order modified
Adjusted a support obligation after a substantial change in the client’s circumstances.
RELOCATION
Removal granted
Won approval for a parent to relocate out of state with their child.
* Results described are illustrative of matters the firm handles. Prior results do not guarantee a similar outcome in any future case.
What my clients say
I had been through two other lawyers and my divorce kept dragging on and my legal bills kept growing. I am very grateful that my friend recommended me to Dolci Weiland & Sendlak . I met with Dominick and Alex and immediately felt like I had found the right lawyers. They seemed knowledgeable and concerned about my case. They resolved it in an expeditious manner. They were much more responsive to my phone calls and emails than my previous lawyers. Good guys. Fair and efficient. I highly recommend them.
I was going through a rough divorce with a previous attorney who I was just not feeling comfortable with. I met with Alex Sendlak and his partner dominick Dolci and I immediately knew I wanted to hire these guys as my lawyers. They made me feel like everything was under control and would be fine. It turned out they were right. I gained custody of my kids and they made sure I received a fair settlement from my ex. Mostly I just feel relieved and happy to be divorced and know that I and my kids will be just fine. Thank you guys!
Anonymous
Divorce
Thank god i met alex and his team at Dolci and Weiland when my husband left our family i was very concerned what was going to happen to me and my kids How wouldi i support them? What was going to happen? It was overwhelming As soon as i met alex and hus partner dominick i i immediately felt like i was going to be ok they explained everything that was going to happen and reassured me that we would come thru this iok six months later my divorc was comple what they said was true and i am quite happy and relieved all the hooror storirs you hear about divorce kawyets did nit apply to alex he was kind to me. He always took or retuned my calls He obviously knew what he was doing as a lawyer i never doubted that. But the part i was most impressed with was the genuine warmth and concern exhibited by everyone at Dolci and Weiland i know consider these people my friends! From the support staff to the partners,these folks were genuine and really seemed to have my best interests at heart i am very grateful to have met them when i did. Highly, highly recomeded!!
Kathleen
Divorce
In my experience Alex is a very good divorce attorney. Always professional, always called after court, and ultimately save me a lot of money in my divorce. I would recommend Alex and his law firm to anyone facing a complicated divorce.
Anonymous
Divorce
I had an oportunity to observe Alex’ s condunct in and out of courtroomon on several ocassions. After being reminded of professional standards, he showed character (stopped using half truths in favor of his clients) and basic respect to the other, self represented, party (better communication, avoiding further representation in another cases involving the same lirigants) . It is acknowledged and appreciated. Attorneys with character are what we need to see for real social justice. Less privileges, more integrity and honesty.
Anonymous
Divorce
Education & credentials
ADMISSIONS
- ▸Admitted to the Illinois Bar, 2006
- ▸U.S. District Court, Northern District of Illinois
- ▸Former Assistant State’s Attorney, DuPage County (2007–2014)
🛡️In good standing · No public disciplinary history with the ARDCxt
EDUCATION
- ▸J.D. — Northern Illinois University College of Law
- ▸B.S. in Business — Miami University, Oxford, OH
AWARDS & RECOGNITION
★ Top 100 Trial Lawyers ★ National Advocates ★ Lead Counsel Rated ★ Avvo Clients’ Choice ★ 40 Under 40
In the profession
🏛️
Memberships
- Illinois State Bar Association
- DuPage County Bar Association
- American Academy of Matrimonial Lawyers (AAML)
🎓
Speaking & writing
- CLE presenter on Illinois custody & parenting time
- Author, firm family-law resource library
- Contributor on post-decree modification topics
📁
Trial experience
- Hundreds of cases tried as a prosecutor
- Charges from traffic offenses to first-degree murder
- DUI and felony drug offenses to verdict
Insights by Alexander Sendlak
What is “Best Interests of the Child”
January 30, 2026
Courts make decisions all the time that affect children. These decisions are often related to things like child custody, child support, any future modifications to custody and support, and termination of parental rights. These decisions are made in light of the best interests of the child. At Dolci Weiland & Sendlak, our family law lawyer
Is Halloween a Holiday in an Illinois Parenting Plan?
October 30, 2019
Halloween is a holiday not just for kids but adults, too. It’s a fun holiday when we can dress up and play the role of monsters and vampires and celebrities or the like. Plus, all sorts of candy and treats abound. But it’s not a holiday for which anyone takes a day off. For that
How to Cope with the Absence of a Child after Divorce
October 18, 2019
If you are married and have children, you probably get to see your children on a daily basis. But when a couple divorces, that reality changes and a parenting plan is put in place to designate parenting time (formally referenced as custody or visitation). Your new reality – one where you see your child part-time – can be difficult
Family Members & Guardianships in Illinois
October 14, 2019
Many family members, particularly parents and spouses, assume they automatically become the guardian when a spouse becomes incapacitated or an adult child is disabled due to: Other reasons a guardian may be necessary are when the ward – the subject of the guardianship – spends or wastes his or her assets and/or money (i.e., his
Talk to Alexander Sendlak today
Whether you’re facing divorce, a custody dispute, or a support disagreement, the first conversation is free — and it’s the fastest way to understand your options.
Or call us directly: (630) 261-9098