The man's first victim was an Invercargill woman whom he abused in March 2014, following a night of drinking with friends.
He offered the teen his bed as she was feeling unwell but later joined her when she was asleep.
Just a few months later, Walker was allowed to sleep on the couch of the second victim while she slept in her own bed.
However, she woke several hours later to find her bedclothes had been removed and the man was lying beside her.
At a previous parole hearing, the board expressed concern the prisoner had "framed his offending in the context of his consumption of alcohol".
Walker accepted he had entitlement issues and a distorted view of intimacy but only made the concessions when pressed.
Ms Coleman said since then, the man had clearly devoted himself to reform.
"Mr Walker acknowledges that managing his low self-esteem and his mental health will be important challenges for himself on release. His strategy to ensure a good life balance is through exercise and through continuation of hobbies," she said.
He told the board he had now sworn off alcohol, and said he intended to start interacting only with a relatively small group of supporters and to gradually develop other friends, all the time bearing in mind his need to maintain "healthy friendships".
The board noted Walker had been living in Otago Corrections Facility's Self Care villas and was a designated shopper for the unit.
The sex offender had made numerous trips outside the wire, including one without electronic monitoring and had been working in external grounds for five months.
Walker's sentence end date is March 2024.
His parole conditions included.
- To live at an address approved by Probation.
- To comply with tenancy agreement at accommodation.
- To abide by a 10pm-6am curfew for the first three months of release.
- To attend a psychological assessment and any prescribed treatment.
- To attend an alcohol and drug assessment and any prescribed treatment.
- Not to possess alcohol or non-prescription drugs.
- To disclose details of intimate relationships to Probation.
- Not to contact any victim of offending.
- To attend a reintegration meeting within a month of release.
- To attend a hearing with the Parole Board in December.
SEXUAL HARM - DO YOU NEED HELP?
If it's an emergency and you feel that you or someone else is at risk, call 111.
If you've ever experienced sexual assault or abuse and need to talk to someone contact Safe to Talk confidentially:
• Call 0800 044 334
• Text 4334
• Email support@safetotalk.nz
• For more info or to web chat visit www.safetotalk.nz
Alternatively contact your local police station -
click here for a list.