In 1971 Jungnickel entered the Free University of Berlin, graduating in 1975. He studied the finite difference method with Hanfried Lenz and completed his Habilitation in 1978. He became a professor of mathematics at University of Giessen in 1980.
With Thomas Beth and Hanfried Lenz he wrote Design Theory (1985) on combinatorial design. Albrecht Beutelspacher reviewed it positively as deserving high estimation, and as an impressive work. It was re-published by Cambridge University Press in 1986. He updated the work in 1989 For the second edition Design Theory (1999) was split into two volumes, one and two.
In 1990 Jungnickel wrote an article on geometric and graph-theoretical aspects of latin squares of interest in coding theory. In September 1990 University of Vermont was the site of a conference concerned with the mathematics of coding theory, and commemorating the contributions of Marshall Hall. Together with Scott Vanstone, Jungnickel edited the Proceedings.
Jungnickel wrote about finite fields in 1993: Finite fields, Structure and Arithmetics. A reviewer notes that "The author does a beautiful job showing and developing the practical applicability of the fascinating area of finite field theory".
In 1999 his book Graphs, Networks and Algorithms appeared as translation of the 1994 German version. A reviewer calls it a "first class textbook" and indispensable for teachers of combinatorial optimization. The second edition appeared in 2005, the third in 2008, and the fourth in 2013.
- D. Jungnickel & Thomas Beth (1982) "Variation on Seven Points: an introduction to the scope and methods of finite geometry and coding theory", Aequationes Mathematicae 25: 153–76 MR730478
- D Jungnickel (1989) "Design Theory: an update", Ars Combinatoria 28: 129–99 MR1039139
- D. Jungnickel (1990) "Latin squares, their geometries and their groups", pages 166 to 225 in Coding Theory and Design Theory, Part II, IMA Volume on Mathematics and Its Applications 21, Springer ISBN 0-387-97231-5 MR1056534
- J. Jungnickel & Scott Vanstone (1993) Coding Theory, Design Theory, Group Theory: Proceedings of the Marshall Hall Conference, John Wiley & Sons ISBN 0-471-55703-X
- Prof. Dr. Dieter Jungnickel at University of Augsburg