David Costello
Kittery
Summary
Versatile and composed defender originally from Ireland, now based in Maine, USA, with over 10 years of competitive experience. Primarily a Right Back with the ability to play effectively at Center Back, known for strong defensive awareness, leadership, and tactical intelligence. Proven success in both attacking and defensive roles, with a history of contributing to team promotion campaigns, cup victories, and league-best defensive records. Currently seeking an opportunity to step into the professional game in the U.S.
Overview
10
10
years of professional experience
Work History
Right Back / Center Back
Castleknock Celtic
07.2016 - 10.2024
- Starting defender in Castleknock’s senior team, contributing to 4 consecutive promotions in the Leinster Senior League
- Lummy O’Reilly Cup Winner, providing an assist in the final and playing a key role in the team’s defensive line
- Former U19 Player of the Season, playing as a number 10 — scored 22 goals in 12 games, helping win the league title and reach second place in the cup
- Part of a defensive unit that conceded the fewest goals in the league for two consecutive seasons
- Demonstrated versatility and tactical intelligence, transitioning from an attacking role to a reliable starting defender
- Known for consistency, leadership, and a high work rate on and off the pitch
Right Back / Center Back
Phoneix FC
08.2014 - 12.2015
- Played in one of Ireland’s top divisions, competing against high-level opposition
- Trusted as a starting defender, rotating between Right Back and Centre Back roles
- Frequently tasked with man-marking key opposition players, showcasing strong defensive discipline and game awareness
- Maintained a high level of consistency and composure throughout the season
- Contributed to a well-organized backline with a strong focus on defensive shape and transitional play
- Gained valuable experience in a fast-paced, physical league environment that demanded quick decision-making and tactical flexibility
Education
Bachelor of Science (Hons.) - Computer Science
Maynooth University
Dublin, Ireland09-2020
Skills
- Versatile Defender: Comfortable at CB and RB across various tactical systems
- 1v1 Defensive Strength: Trusted to man-mark high-level opponents, including ex-professionals
- Game Reading & Positioning: Intelligent anticipation and awareness
- Ball-Playing Ability: Confident building from the back with clean passing range
- Physicality: Strong aerial presence, aggressive in duels, fast recovery pace
- Leadership: Vocal organizer with experience leading defensive lines
- Composure Under Pressure: Calm in possession, reliable in high-stakes matches
- Former Attacker’s Vision: Brings creativity and forward-thinking from past attacking role
- Consistency: Contributed to multiple promotions and top-tier defensive records
- Adaptability: Quick to learn new systems, environments, and team dynamics
Timeline
Right Back / Center Back
Castleknock Celtic
07.2016 - 10.2024
Right Back / Center Back
Phoneix FC
08.2014 - 12.2015
Bachelor of Science (Hons.) - Computer Science
Maynooth University
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