Teltech is a New York-based communications company and a proud part of Mosaic Group, a division of IAC (Nasdaq: IAC), fostering a unique and diverse Silicon Valley-like culture, where talented individuals can flourish.


Our deep wealth of experience in telecom and mobile allows us to execute fresh new ideas and opportunities that other companies wouldn't have the foresight to see. At the same time, we’re serious about giving the end user what they want, even if they don't know it yet.

executive team

  • Patrick Falzon

    Patrick Falzon

    General Manager

    Hello, I'm Patrick.

    As General Manager, my role is made easy by the rest of the amazing team here at Teltech, where our goal is to deliver forward-thinking and user-friendly mobile solutions that focus on security, practicality and innovation. In my free time, I enjoy travel, reading and long walks on the beach (with my dog, of course).

    Say hello to Patrick and our team!
  • Matt Mizenko

    Matt Mizenko

    SVP of Operations

    Sup y'all? I'm Matt and I'm the SVP of Operations.

    At my heart, I am a sausage maker, which means that I do the really fun stuff like driving process and execution. Jealous, right? Nothing geeks me out more than starting with a few ideas on a whiteboard and eventually shipping a polished product. I've been in mobile since way before it was even a thing; in fact, I built one of the world's first mobile commerce applications. Though I grew up in NJ (Rutgers Strong!) I currently live on a small farm outside of Seattle, WA with my family and am a diehard supporter of local club and 2019 MLS Champions Seattle Sounders FC.

    Say hello to Matt and our team!
  • Giulia Porter

    Giulia Porter

    VP of Marketing

    Hi there, I'm Giulia.

    I lead Teltech's Marketing efforts as the VP of Marketing. I love geeking out on brand and data-driven marketing. In my free time, I enjoy photography, travel, and trips to Target.

    Say hello to Giulia and our team!
  • Dan Pannasch

    Dan Pannasch

    VP of Product

    Oh hey! I'm Dan.

    As the VP of Product, my mission is to make sure that our products are constantly evolving to meet the needs of our customers and to equip our product managers to lead their teams effectively. When I'm not at the office, I'm probably at home drinking a Mountain Dew, listening to a podcast, and pretending to know how to be an adult.

    Say hello to Dan and our team!


  • Nate Joel

    Nate Joel

    Director of Operations

    Yerr, I'm Nate.

    As Teltech's Director of Operations, I oversee many different efforts across teams and assist in the improvement processes around our policies and procedures. I also ensure there is support and accountability for our organization's strategic direction while assisting in the creation and management of our long term goals. In my spare time, you can find me in the gym, practicing my violin or piano, playing tug of war with my pup, or humming along to some R&B jams.

    Say hello to Nate and our team!
  • Mike Elliott

    Mike Elliott

    IT and Desktop Systems Administrator

    Hey, I'm Mike! (Or Elliott. Or, 'Hey, IT guy.')

    As the IT and Desktop Systems Admin, my job is to make sure everyone's tech is up and running. Even after being in this field for over 10 years, I'm still finding things that surprise me. When I'm not fixing computers you can find me out exploring local breweries, reading a way too big sci-fi novel, or just wondering about a park somewhere (probably looking at birds).

    Say hello to Mike and our team!
  • Lupe Bailey

    Lupe Bailey

    People & Culture Manager

    Hey there, Lupe here!

    Throughout my career at Teltech I have worn many hats and have acted as the ‘catch-all'. However, I have always been drawn to our people and our culture. I know that creating an open and accepting space for all is the best way to empower each individual to grow and reach their fullest potential. As the People & Culture Manager for Teltech, I get to do just that.

    Say hello to Lupe and our team!

product team

  • Thomas Flaim

    Thomas Flaim

    Product Manager

    Hello! My name's Tommy.

    As a product manager, I am obsessed with understanding our customer's needs and developing innovative solutions to make sure RoboKiller and TapeACall are solving their problems. I enjoy hiking my favorite trails, playing videos games and I love my German Shepherd, Elsie. Did I mention I play the trumpet?

    Say hello to Thomas and our team!
  • Nick Godwin

    Nick Godwin

    Senior Product Manager

    Hey there, I'm Nick!

    As a Senior Product Manager, I help make RoboKiller one of your favorite apps. I also get a little nerdy about craft beer and coffee. As a native San Diegan, you'll find me outside and wearing sandals as much as I can.

    Say hello to Nick and our team!
  • James Kocher

    James Kocher

    Senior Product Manager

    Hello :)

    I am a Senior Product Manager for SwitchUp and I've been tasked with working on making the Command Center even more powerful at blocking spam calls. I never learned to code but love being able to understand the technical details of how things work so I can translate user requirements to developers and help build the best products. I enjoy all things cars, building PCs, playing video games (mainly FPS), snowboarding, and totally unplugging outdoors when I'm not working.

    Say hello to James and our team!
  • Alvin Liu

    Alvin Liu

    Product Manager

    Hi, I'm Alvin.

    I am a Product Manager at Teltech. When I landed my first job as an equity trader on Wall Street I learned how to invest and trade heavily in the US equity market. Now, I act more like a financial advisor to a lot of my friends and family helping them trade and invest to retire at the age of 50. I love traveling and exploring the world, and so far I've visited 30 countries. I also have a white Pomeranian, who is about 5 years old now.

    Say hello to Alvin and our team!
  • Bryan Ospina

    Bryan Ospina

    Associate Product Manager

    Hey, what's up? I'm Bryan!

    I'm a product manager and my duty is to help our team deliver the best apps possible! With my extensive technical support background, I know our users very well and I'm on a mission to help them get exactly what they want. When I'm not digging into work, you can find me playing video games, beekeeping, or catching a soccer game!

    Say hello to Bryan and our team!

marketing team

  • Zlatko Kelemenić

    Zlatko Kelemenić

    Design Consultant

    Studio Magus

    Bok ljudi, ja sam Zlatko!

    I'm a marketing designer, and my job is to bring awesome ideas to life, through the power of animation. Do you need a forever looping animation of a guy chewing obnoxiously? I'm on it! At first glance, you could probably tell that I'm a huge fantasy fan. The magic, the swords, and the deep and compelling story are what inspired me to animate.

    Say hello to Zlatko and our team!
  • Goran Levačić

    Goran Levačić

    Design Consultant


    Bok, ja sam Goran!

    I am a marketing designer, making sure that pixels work together as a team. Most of the visual content about Teltech's products found on websites and social media went through my GPU. In spare time I love to cycle around hills and forests with my family or spend time in my garden. In fact, I believe that nature and gardening tools are designer's best friends, at least in my case.

    Say hello to Goran and our team!
  • Chris Millet

    Chris Millet

    Senior Creative Manager

    Hello friends!

    My name is Chris and I'm the Senior Creative Manager for all Teltech Brands! From Motion Graphics to Animation to VFX, and even full Live action production I design and organize everything our Apps and design team need to innovate and capture our audience. In my spare time, I'm an avid gamer playing both Tabletop and Video Games. Don't get me started on my obsession with Dungeons and Dragons or I might stop working altogether.

    Say hello to Chris and our team!
  • Jillian Young

    Jillian Young

    Growth Marketer

    Hey, I'm Jillian!

    I am a Growth Marketer here at Teltech. My role consists of developing and carrying out new growth initiatives and tests across all of our apps in order to grow our user base! You can usually find me at the movies (I'm a huge film nerd) or playing my guitar. I'm also an identical twin!

    Say hello to Jillian and our team!
  • Amanda


    Public Relations Manager

    Hi, I'm Amanda!

    I'm the Public Relations Manager at Teltech. In my role, I manage the overall strategy and public relations efforts for Teltech and RoboKiller. In my spare time, I enjoy traveling with my husband, spending time outdoors (especially during the fall 🍂), listening to music, and a really good dance party! 💃

    Say hello to Amanda and our team!
  • Wendy Diep

    Wendy Diep

    Director of Marketing

    Hi, I'm Wendy.

    As the Director of Marketing at Teltech, I help oversee TelTech's growth and marketing efforts. In my free time, I read, travel, and love trying new restaurants/bars.

    Say hello to Wendy and our team!
  • Justin Garcia

    Justin Garcia

    Community Manager

    Yoyo, it's Justin.

    I'm the voice of the people! I work as our Community Manager and I love being part of the Teltech family. I make sure we are listening to our users so everyone can be happy. Outside of work you can catch me playing video games and walking my Boston terrier Rocky. I also love to dance and used to be an assistant breakdance teacher in high-school. Whenever there is dancing going on at Teltech, I will be the first one ON and the last one OFF the dance floor!

    Say hello to Justin and our team!
  • Yauheni Bakumenka

    Yauheni Bakumenka

    User Acquisition Lead

    Hi, I'm Eugene!

    I'm the Lead of User Acquisition at Teltech. My role consists of analyzing all ad campaigns for all Teltech apps. In my free time, I prefer playing video games and collecting comics, and I enjoy street roller skating.

    Say hello to Yauheni and our team!
  • Katsiaryna Sazonava

    Katsiaryna Sazonava

    Senior Marketing Manager

    Hey! I'm Kate, or Katsiaryna!

    As the Marketing and ASO Manager, I help with App Store Optimization and UA creatives for RoboKiller and TrapCall. I've been working in mobile marketing since 2014, and have tried my skills in maps and health/fitness applications, startup for Uber drivers, and casual games. I love exploring new fields and doing my best to make people love the apps I'm doing marketing for. As for my hobbies, I've been doing yoga for 10 years now and have two beautiful Oriental cats. When I'm not working, there's high chance that I'm reading – I cannot live without my Kindle and read about one book per week.

    Say hello to Katsiaryna and our team!
  • Anastasiya Buntsevich

    Anastasiya Buntsevich

    UA Manager

    Hi, my name is Anastasiya.

    I'm a User Acquisition Manager at Teltech, working with RoboKiller, TapeACall and TrapCall. In my spare time, I enjoy watching good movies and hanging with my friends. Also, I love traveling and have a dream to see the whole world one day.

    Say hello to Anastasiya and our team!
  • Margarita Kripulevich

    Margarita Kripulevich

    Senior Marketing Manager

    Hey, I'm Margarita!

    I'm the Marketing Manager here at Teltech. My main responsibilities are to be on top of advertising trends and ASO optimization. I adore spending my free time with my family or reading a book.

    Say hello to Margarita and our team!

design team

  • Oren Schindler

    Oren Schindler

    Manager of UX Design

    Hey, how's it going?

    Here at Teltech, my goal is to build consistency through informed learning while gaining insight about our target audience. In my spare time, I like to go to the beach and hang out with my family in and around Brooklyn. I also enjoy playing board games, cooking, eating, and watching a good comedy. Got any recommendations for a good rock/blues/acid jazz/reggae concert?

    Say hello to Oren and our team!
  • Chihiro Kobayashi

    Chihiro Kobayashi

    Lead UX Designer

    Hi, I'm Chi!

    I have been at IAC for over 15 years and I'm very excited to be working on RoboKiller! In my free time, I love drawing illustrations, watching Anime, building plastic models, and playing board games.

    Say hello to Chihiro and our team!
  • Lucija Fuček

    Lucija Fuček

    UX Design Consultant


    Salut, je suis Lucija!

    I'm a Junior UX Designer which means I'm here to predict your needs and wants inside your favorite utility apps and web pages. I'm always ready for the next challenge and the chance to expand my knowledge. Someday, I would like to try designing a user interface of a car or a space rocket. In my free time, I like to inspire myself with fantasy books, SF movies, music, and my favorite motivators - my two little girls.

    Say hello to Lucija and our team!

development team

  • Nikola Brežnjak

    Nikola Brežnjak

    Principal Engineering Consultant


    Bok, ja sam Nikola!

    I'm the Principal Engineering Consultant responsible for leading mobile and cloud devs as well as QA. I love board games and I'm aspiring to become Iron Man somewhere in the future. Whatever spare time I find I tend to spend with my two little kids and my lovely supportive wife. I like to read, but it turns out that I like to listen to Audible books even more.

    Say hello to Nikola and our team!
  • Marty Balaban

    Marty Balaban

    Mobile Developer

    Bonjour, je m'appelle Marty.

    I have been passionately building iOS and Android applications since 2009. I am always super excited to delivery amazing user experiences and functionality as well as being able to get my work into the hands of people so quickly. When I'm not changing the world coding… I love playing softball, building physical things, and playing music on my trumpet and piano. I love spending time with my three kids and wife in our totally sweet Star Wars basement theater. I have a big passion for electric vehicles since I feel like I'm piloting a spaceship when I'm driving around town.

    Say hello to Marty and our team!
  • Al Beebe

    Al Beebe

    Senior Front-End Engineer

    What's up guy, I'm Al.

    I'm responsible for leading the development of our websites and apps. Most of my time is spent coding. I'm wicked good with electricity, and really big into home automation. I'm currently tinkering with my house so I can control it from my phone. Hopefully, I remember to keep my phone charged.

    Say hello to Al and our team!
  • Daniel Bordak

    Daniel Bordak

    Software Engineer

    Hi, I'm Daniel!

    I'm a Full Stack Developer working on TapeACall. I enjoy board games, video games, building keyboards, watching movies with friends, and of course, programming! I'm a firm believer in doing things right the first time, and I hate having to clean (whether it's code or my floor).

    Say hello to Daniel and our team!
  • Jason Brooks

    Jason Brooks

    Full Stack Developer

    Hi, I'm Jason.

    I'm part of the micro-services platform team. I love to travel and experience new cultures. I also love sports and I'm a diehard Philadelphia Eagles and Sixers fan!

    Say hello to Jason and our team!
  • Jason Clardy

    Jason Clardy

    Software Engineer

    Hey, I'm Jason.

    I started to learn about programming on a TI-83 graphing calculator in middle school. Now, I do pretty much everything relating to front-end development for mobile apps on both iOS and Android. In my former life I was a rock star... well, maybe not. I just played electric guitar in a metal band during my college years at NC State University.

    Say hello to Jason and our team!
  • Mauricio Cuenca

    Mauricio Cuenca

    Software Engineer

    Hey, I'm Mauricio!

    I'm part of the micro-services platform team. I enjoy playing tennis and hiking or mountain biking over the New Jersey, New York and Pennsylvania tri-state area as long as the outside temperature is higher than 10 degrees... celsius.

    Say hello to Mauricio and our team!
  • Tom Devito

    Tom Devito

    Software Engineer

    Hey, I'm Tom, and no I'm not related to Danny DeVito.

    I'm part of the micro-services platform team at TelTech. Besides beating my co-workers at ping-pong, I enjoy being outdoors, smoking food on my grill, and building things out of wood.

    Say hello to Tom and our team!
  • Arthur DiLeo

    Arthur DiLeo

    Junior Software Engineer

    Hey, I'm Aj!

    I'm a Junior Software Engineer working on the Command Center concentrating on machine learning efforts and internal services. Fun fact: I'm the youngest here at Teltech! In my spare time, I enjoy cooking and watching the stock market. Outside of work, I am a full-time student majoring in Computer Science and Mathematics.

    Say hello to Arthur and our team!
  • Paul Dippold

    Paul Dippold

    Software Engineer

    Hey, I'm Paul!

    I'm an iOS Developer working on TapeACall and Call Recorder. I made my first iPhone app when I was 13 years old; ever since then I have spent as much of my time on the platform as possible. In my free time I like to search for and photograph waterfalls and homebrew ginger beer.

    Say hello to Paul and our team!
  • Matija Lesar

    Matija Lesar

    Engineering Consultant


    Bok, ja sam Matija!

    I'm a Full Stack Developer, working primarily on TrapCall's backend. In my spare time, I enjoy traveling and testing local cuisine with my son and wife. I like to watch sci-fi movies, read sci-fi books, and watch cartoons.

    Say hello to Matija and our team!
  • Ivan Matković

    Ivan Matković

    Engineering Consultant


    Bok, ja sam Ivan!

    I am Senior iOS Developer currently working on awesome Teltech products! I am really passionate about coding and technology, but I also like soccer. So when I am AFK, I am probably on the soccer field playing or watching some games. Besides that, I also like to relax by playing video games or watching movies.

    Say hello to Ivan and our team!
  • Matthew Nakama

    Matthew Nakama

    Software Engineer

    Hello, I'm Matt.

    The more I know, the more that I know that I don't know. I've been writing software since I was 12, and I've been practically glued to the computer screen since. I spend my free time writing code, playing (and making) PC games, and occasionally working at new hobbies. I am a licensed ham radio operator; I aspire to be a licensed pilot.

    Say hello to Matthew and our team!
  • Manuel Peguero

    Manuel Peguero

    Software Engineer

    Hey, I'm Manuel.

    I'm part of the micro-services platform team at TelTech. I love to play pool, watch Japanese anime, tv shows, and sports. And, of course, drink beer.

    Say hello to Manuel and our team!
  • Krunoslav Popović

    Krunoslav Popović

    Engineering Consultant


    Hi, I'm Krunoslav!

    I'm an Android Developer with more than 6 years of experience in developing Java and Java-based applications. Besides programming, I love electronics and robotics. When I am not programming or disassembling electronic stuff I usually play football, but in general, all sports with a ball are welcomed as well.

    Say hello to Krunoslav and our team!
  • Zvonimir Radoš

    Zvonimir Radoš

    Communications Consultant


    Hey, I'm Zvone!

    I'm a Software Developer with experience in designing BSS and OSS solutions for telco operators in GSM and IMS architecture. When I'm not struggling with telco abbreviations, I spend most of my free time with my family, as they are always in for action. I also enjoy sports and music.

    Say hello to Zvonimir and our team!
  • Tomislav Tušek

    Tomislav Tušek

    Engineering Consultant


    Bok, ja sam Tomislav!

    As an Android developer, my main responsibility is the development of RoboKiller and making it the best possible product. Hopefully, we can beat iOS at their game and become number one. When not working, I like to read a good book, well, when my daughter's sleeping. Since most her waking hours I am building skyscrapers or pretending to be some kind of an animal, a ghost or whatever she likes at that moment. Also, I like all kinds of tech gadgets and I'm always on a lookout for a new one (don't tell my wife).

    Say hello to Tomislav and our team!
  • Ivo Valčić

    Ivo Valčić

    Engineering Consultant


    Hi, I'm Ivo!

    I'm an iOS Developer with 6-year experience in building iPhone and iPad apps, working on RoboKiller. My greatest love is programming, software architecture, writing code etc, in short, converting ideas into reality. In my spare time, I enjoy traveling and hiking.

    Say hello to Ivo and our team!
  • Ivan Jozic

    Ivan Jozic

    Jr. Telecom Consultant

    Omni Consumer Projects

    Why hello there. My name is Ivan.

    I'm a software engineer working on telco related topics. Ever since my first computer (a C64), spending most of the time in front of a screen became the new norm. In my ever so decreasing spare time, I'm playing games (especially flight & space sims), (re)watching cult movies, assembling model kits, and playing football.

    Say hello to Ivan and our team!
  • Marko Aras

    Marko Aras

    Engineering Consultant


    Hi, my name is Marko.

    I'm an iOS Developer, and my responsibility is the automation of the iOS apps testing process. I spend most of my time working on iOS applications, and I love every part of it. Most of my free time is spent in the kitchen or on the slopes.

    Say hello to Marko and our team!
  • Luka Đukić

    Luka Đukić

    Front End Consultant

    Harbor Software Development

    Bok, ja sam Luka.

    I'm a front-end developer writing JavaScript and building websites. Coding is also my hobby, so to balance out time in front of the screen I like to spend my free hours in nature, fishing lakes, or riding my bike in the woods.

    Say hello to Luka and our team!

data team

  • Landry


    Data Scientist

    Salut, I am Landry.

    I am a Data Scientist working on predictive models and analysis of revenue various Teltech apps metrics. In my spare time, I enjoy traveling, public speaking and playing soccer. I'm also a member of the Nutley Toastmaster's club!

    Say hello to Landry and our team!
  • Stella Wang

    Stella Wang

    Data Analyst

    Hi, I'm Stella!

    As a Data Analyst, my main focus is on telling stories with data and helping business to grow. In my free time, I enjoy working out and doing yoga. I am also an Impressionist art lover, where you will find me at the Met or MoMA watching paintings. I love traveling, and since I grew up in Beijing, China I travel back once a year to gather together with my family.

    Say hello to Stella and our team!
  • Prachi Kate

    Prachi Kate

    Data Engineer

    Hey! I'm Prachi.

    I am a Data Engineer and my main responsibility is to make data readily available to Analysts and Scientists. In my free time I enjoy going for a run with my dog (Joey the Sheepdog!), reading a book, playing games on my PS or just going out for a drink with my friends.

    Say hello to Prachi and our team!

quality assurance team

  • Kevin Mendoza

    Kevin Mendoza

    QA Engineer

    What's up guys, I'm Kevin!

    Working in Quality Assurance, I make sure our apps are as flawless and bug-free as possible. When I'm not at work, I enjoy playing video games and spending time with my friends and family. I also enjoy taking on new and interesting challenges.

    Say hello to Kevin and our team!
  • Louis Valentino

    Louis Valentino

    QA Engineer

    What's up? I'm Louis.

    I work with a great team to uphold TelTech's quality standards. I ensure that our apps are bug free before they're released and that all issues are resolved quickly. I live for Yankees baseball, vinyl records, and video games.

    Say hello to Louis and our team!
  • Robert Vargić

    Robert Vargić

    QA Engineering Consultant

    Bok, ja sam Robert!

    I'm a QA Engineer, and my responsibilities are writing, integrating, and executing automated tests on mobile platforms. I have over five years of experience in different fields of the industry, and I always look for new and challenging things. In my spare time, I ride my mountain bike and do triathlons; that means that all I do is work, train, and sleep.

    Say hello to Robert and our team!

customer service team

  • Kanstantsin Karpovich

    Kanstantsin Karpovich

    Customer Support Team Lead

    Hey, I'm Kostya!

    I provide our users with solutions for any issues they might have. I'm a huge fan of history, addicted to music and learning how to play a guitar, and passionate about traveling.

    Say hello to Kanstantsin and our team!
  • Yana Radzilavets

    Yana Radzilavets

    Customer Support Manager

    Hi, I'm Yana!

    My goal is to deliver great service and exceed users' expectations. I'm a massive fan of reading -- classical literature is a big part of my life and I dream about becoming a writer one day. I also love Chinese food!

    Say hello to Yana and our team!
  • Lizaveta Kozina

    Lizaveta Kozina

    Senior Customer Support Manager

    Hi, I'm Liza!

    Communication with customers, resolving their issues and guiding the users through features and functionalities of the products are among my key responsibilities. In my spare time, I like traveling with my family and friends, spending time outdoors or watching a new movie. Oh, do you know that I am a ballet dancer?

    Say hello to Lizaveta and our team!
  • Aliaksandr Papushoi

    Aliaksandr Papushoi

    Customer Support Manager

    Hi, my name is Aliaksandr!

    If you've got any questions or issues with our products we are the first ones to react and help you. I like board games, comic books, kickboxing and occasionally making music.

    Say hello to Aliaksandr and our team!