Software Engineer (Engineer III to Principal) - Formal Methods

Devconnectplatform; United States; Remote; USD 115,000 - 230,000; Full time

Benefits offered by this job

Medical insurance

Vision and dental

401(k) with company matching

Paid time off

Job summary

CertiK is seeking a Software Engineer (Engineer III to Principal) to design and develop tools that ensure the correctness of smart contracts and identify security issues. You will work with symbolic model checking, SAT/SMT solving, and abstract interpretation within a multinational team.

The role covers all stages of tool development, from idea to implementation, with collaboration, learning, and growth opportunities. Remote work from the United States is supported.

Qualifications

• Master's degree or 5 years of equivalent experience.
• Experience with formal verification and automated reasoning.
• Background in programming language theory and verification techniques.
• Strong knowledge of data structures, algorithms, logic, and automata theory.

Responsibilities

• Extend automated program verification tools and design new tools.
• Improve symbolic model checking algorithms (BMC, CEGAR, IC3/PDR).
• Create translators from input languages to intermediate representations for analysis.
• Identify and formalize security properties of smart contracts for tools.
• Collaborate with engineers and set technical direction with your team and management.
• Deliver working software including testing, CI/CD, and customer feedback integration.

Skills

Model checking

Formal verification

SAT/SMT solving

Abstract interpretation

Automated reasoning

Haskell

Education

Master's Degree in Computer Science or related field

5 years of equivalent experience

Tools

Z3

CVC4

Yices

MathSAT

SMTInterpol

Job description

# Software Engineer (Engineer III to Principal) - Formal MethodsCertiK115k–230k USDFull-timeremote· leadUSAhaskellListed via Jobicy · posted 22 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionWhy us?Blockchain technology is enabling a rapidly-growing era of innovation for the digital world. It is crucial that blockchain code such as protocols and smart contracts are provably secure and correct. Once deployed, they are public and cannot be changed. Vulnerabilities and bugs in such programs regularly put millions of dollars at stake. This is where CertiK comes in. We are the leading blockchain security company. Our goal is to secure the cyber world by applying cutting edge techniques from academia to secure blockchain code. Come and join this ambitious mission as a research software engineer to work on automated analyses for provably secure and correct blockchain applications!What you will doYou will design and develop tools that automatically ensure the correctness of smart contracts or identify security issues and bugs in smart contracts. We have software engineer positions available at all levels of seniority. Title and responsibilities will be commensurate with experience and background.As part of our multinational team of programming language experts, you will participate in the development of tools that rest upon techniques such as symbolic model checking, SAT/SMT solving, abstract interpretation, data flow analysis, and deductive verification. You will have the opportunity to work on all stages of tool development from idea generation to implementation and iterative improvements. Our team is highly supportive and collaborative with great opportunities to learn and grow.About youYou have a background in programming language theory and automated reasoning and love to work on the forefront of applying results from theoretical computer science. You love to tackle computationally hard problems and have a proven track record of achieving results, where results are people using your tool to do their jobs. You are collaborative: you share ideas, love to brainstorm with peers, and give and receive feedback. You are comfortable with the unknown and understand that #startuplife means that you will be wearing multiple hats.Responsibilities- Extend the scope and depth of our automated program verification tools and brainstorm, design, and implement new tools.- Adapt and improve algorithms for symbolic software model checking. Examples include bounded model checking (BMC), counterexample-guided abstraction refinement (CEGAR), and property directed reachability (IC3/PDR).- Build and extend translators from different input languages into intermediate representations, optimizing the generated models for automated analysis.- Identify new classes of security properties of smart contracts and formalize properties for use in our automated verification tools.- Closely collaborate with other software engineers in developing tools and set technical direction for solving problems in consultation with your team and management.- Work on all aspects of delivering working software that meets customer needs, including analysis, design, automated testing, operations, CI/CD, measuring results, incorporating customer feedback, and support.Required Qualifications- Master's Degree in Computer Science or a related field or 5 years of equivalent experience.- Minimum of 4 years of software development experience (includes internships, software developed during research, and open-source development).- Minimum of 2 years of experience with one or more of the following: model checking, formal verification, SAT/SMT solving (Z3, CVC4, Yices, MathSAT, SMTInterpol), abstract interpretation, or closely related disciplines.- Demonstrated knowledge of fundamental computer science concepts such as data structures, algorithms, mathematical logic, and automata theory.Preferred Qualifications- PhD in the broader field of automated reasoning.- Publication record in conferences like POPL, CAV, TACAS, FMCAD, FM, etc.- Experience in functional programming (OCaml or Haskell).- Strong and creative problem-solving skills; always willing to learn and embrace new technologies and to collaborate.- Prior experience in a professional software development environment.CompensationAdditional InformationAbout the CompanyFounded in 2018 by professors of Yale University and Columbia University, CertiK is a pioneer in blockchain security, utilizing best-in-class technology to secure and monitor blockchain protocols and smart contracts. CertiK’s mission is to secure the cyber world. Starting with blockchain, CertiK applies cutting-edge innovations from academia into enterprise, enabling mission-critical applications to be built with security and correctness.CompensationTarget annual base salary for this role performed in the US is $115,000 - $230,000.The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates.#LI-Remote#blockchain#startups#hiringCertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements.https://www.eeoc.gov/sites/default/files/migrated\\_files/employers/poster\\_screen\\_reader\\_optimized.pdfAll CertiK employees are expected to actively support diversity on their teams, and in the Company.